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  • 201. Bergstrom, Anders
    et al.
    Frantz, Laurent
    Schmidt, Ryan
    Ersmark, Erik
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Lebrasseur, Ophelie
    Girdland-Flink, Linus
    Lin, Audrey T.
    Stora, Jan
    Sjogren, Karl-Goran
    Anthony, David
    Antipina, Ekaterina
    Amiri, Sarieh
    Bar-Oz, Guy
    Bazaliiskii, Vladimir I.
    Bulatovic, Jelena
    Brown, Dorcas
    Carmagnini, Alberto
    Davy, Tom
    Fedorov, Sergey
    Fiore, Ivana
    Fulton, Deirdre
    Germonpre, Mietje
    Haile, James
    Irving-Pease, Evan K.
    Jamieson, Alexandra
    Janssens, Luc
    Kirillova, Irina
    Horwitz, Liora Kolska
    Kuzmanovic-Cvetkovic, Julka
    Kuzmin, Yaroslav
    Losey, Robert J.
    Dizdar, Daria Loznjak
    Mashkour, Marjan
    Novak, Mario
    Onar, Vedat
    Orton, David
    Pasaric, Maja
    Radivojevic, Miljana
    Rajkovic, Dragana
    Roberts, Benjamin
    Ryan, Hannah
    Sablin, Mikhail
    Shidlovskiy, Fedor
    Stojanovic, Ivana
    Tagliacozzo, Antonio
    Trantalidou, Katerina
    Ullen, Inga
    Villaluenga, Aritza
    Wapnish, Paula
    Dobney, Keith
    Gotherstrom, Anders
    Linderholm, Anna
    Dalen, Love
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Pinhasi, Ron
    Larson, Greger
    Skoglund, Pontus
    Origins and genetic legacy of prehistoric dogs2020Inngår i: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 370, nr 6516, s. 557-563Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Dogs were the first domestic animal, but little is known about their population history and to what extent it was linked to humans. We sequenced 27 ancient dog genomes and found that all dogs share a common ancestry distinct from present-day wolves, with limited gene flow from wolves since domestication but substantial dog-to-wolf gene flow. By 11,000 years ago, at least five major ancestry lineages had diversified, demonstrating a deep genetic history of dogs during the Paleolithic. Coanalysis with human genomes reveals aspects of dog population history that mirror humans, including Levant-related ancestry in Africa and early agricultural Europe. Other aspects differ, including the impacts of steppe pastoralist expansions in West and East Eurasia and a near-complete turnover of Neolithic European dog ancestry.

  • 202. Bergstrom, Anders
    et al.
    Stanton, David WG
    Taron, Ulrike H
    Frantz, Laurent
    Sinding, Mikkel-Holger S
    Ersmark, Erik
    Pfrengle, Saskia
    Cassatt-Johnstone, Molly
    Lebrasseur, Ophelie
    Girdland-Flink, Linus
    Dalén, Love
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Grey wolf genomic history reveals a dual ancestry of dogs2022Inngår i: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 607, s. 313-320Artikkel i tidsskrift (Fagfellevurdert)
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  • 203.
    Bergström, Jan
    et al.
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Hou, Xian-Guang
    Yunnan University, Kunming.
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Gut contents and feeding in the Cambrian arthropod Naraoia2007Inngår i: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 129, s. 71-76Artikkel i tidsskrift (Fagfellevurdert)
  • 204.
    Bermúdez, Hermann
    et al.
    Grupo de Investigación Paleoexplorer.
    Arenillas, Ignacio
    Universidad de Zaragoza.
    Arz, José Antonio
    Universidad de Zaragoza.
    Vajda, Vivi
    Naturhistoriska riksmuseet, Enheten för paleobiologi. Department of Geology, Lund University, Sweden.
    Renne, Paul
    University of California, Berkeley.
    Gilabert, Vicente
    Universidad de Zaragoza.
    Rodríguez, José Vicente
    Grupo de Investigación Paleoexplorer.
    The Cretaceous/Paleogene Boundary Deposits on Gorgonilla Island2019Inngår i: The Geology of Colombia, Volume 3 Paleogene – Neogene / [ed] Gómez, J. & Mateus–Zabala, D., Bogota: Servi­cio Geológico Colombiano , 2019, 1, s. 1-19Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    A ca. 20 mm thick spherule bed representing Chicxulub impact ejecta deposits and marking the Cretaceous/Paleogene (K/Pg) boundary was recently discovered on Gorgonilla Island (Gorgona National Natural Park, Pacific of Colombia). This discovery represents the first confirmed record of the K/Pg event in Colombia, South America and the eastern Pacific Ocean. The deposit consists of extraordinarily well–preserved glass spherules (microtektites and microkrystites) reaching 1.1 mm in diameter. Importantly, the Gorgonilla spherule bed is unique relative to other K/Pg boundary sites in that up to 90% of the spherules are intact and not devitrified, and the bed is virtually devoid of lithic fragments and microfossils. The spherules were deposited in a deep marine environment, possibly below the calcite compensation depth. The preservation, normal size–gradation, presence of fine textures within the spherules, and absence of bioturbation or traction transport indicate that the Gorgonilla spherules settled within a water column with minimal disturbance. The spherule bed may represent one of the first parautochthonous primary deposits of the Chicxulub impact known to date. 40Ar/39Ar dating and micropaleontological analysis reveal that the Gorgonilla spherule bed resulted from the Chicxulub impact. Intense soft–sediment deformation and bed disruption in Maastrichtian sediments of the Gorgonilla Island K/Pg section provide evidence for seismic activity triggered by the Chicxulub bolide impact, 66 million years ago. It is also notable that the basal deposits of the Danian in the Colombian locality present the first evidence of a recovery vegetation, characterized by ferns from a tropical habitat, shortly following the end–Cretaceous event.

  • 205. BERMÚDEZ,, Hermann Darío
    et al.
    ARENILLAS, Ignacio
    ARZ, José Antonio
    Vajda, Vivi
    Naturhistoriska riksmuseet, Enheten för paleobiologi. Department of Geology, Lund University, Sweden.
    RENNE, Paul R.
    GILABERT, Vicente
    RODRÍGUEZ, José Vicente
    The Cretaceous/Paleogene boundary deposits on Gorgonilla Island2018Inngår i: The Geology of Colombia: Volume  3   Paleogene – Neogene / [ed] Tapias, J.G. et al., Bogota: Servicio Geológico Colombiano , 2018, s. 1-34Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    A ~20 mm thick spherule bed representing Chicxulub impact ejecta deposits and marking the Cretaceous/Paleogene (K/Pg) boundary was recently discovered on Gorgonilla Island (Gorgona National Natural Park, Pacific of Colombia). This discovery represents the first confirmed record of the K/Pg event in Colombia, South America and the eastern Pacific Ocean. The deposit consists of extraordinarily well–preserved glass spherules (microtektites and microkrystites) reaching 1.1 mm in diameter. Importantly, the Gorgonilla spherule bed is unique relative to other K/Pg boundary sites in that up to 90% of the spherules are intact and not devitrified, and the bed is virtually devoid of lithic fragments and microfossils. The spherules were deposited in a deep marine environment, possibly below the calcite compensation depth. The preservation, normal size–gradation, presence of fine textures within the spherules, and absence of bioturbation or traction transport indicate that the Gorgonilla spherules settled within a water column with minimal disturbance. Thus, the spherule bed may represent one of the first parautochthonous primary deposits of the Chicxulub impact known to date. 40Ar/39Ar dating and micropaleontological analysis reveal that the Gorgonilla spherule bed resulted from the Chicxulub impact. Intense soft–sediment deformation and bed disruption in Maastrichtian sediments of the Gorgonilla Island K/Pg section provide evidence for seismic activity triggered by the Chicxulub bolide impact, 66 million years ago. It is also notable that the basal deposits of the Danian in the Colombian locality present the first evidence of a recovery vegetation, characterized by ferns from a tropical habitat, shortly following the end–Cretaceous event.

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  • 206. Bernardi, Francesco
    et al.
    Skogby, Henrik
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Lenaz, Davide
    University of Trieste.
    OH-Defects in Detrital Quartz Grains from the Julian Basin (NE Italy and Slovenia): A Fourier Transform Infrared Study2022Inngår i: Geosciences, E-ISSN 2076-3263, Vol. 12, artikkel-id 90Artikkel i tidsskrift (Fagfellevurdert)
  • 207. Bernor, R. L.
    et al.
    Fahlbusch, V.
    Andrews, P.
    De Bruijn, H.
    Fortelius, M.
    Rögl, F.
    Steininger, F. F.
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    The evolution of western Eurasian Neogene faunas: a chronologic, systematic, biogeographic, and paleoenvironmental synthesis1996Inngår i: The Evolution of Western Eurasian Miocene Mammal Faunas / [ed] Bernor, R.L., Fahlbusch, V. & Mittmann, H.-W., New York: Columbia University Press, 1996, s. 449-469Kapittel i bok, del av antologi (Fagfellevurdert)
  • 208. Bernor, R. L.
    et al.
    Kordos, L.
    Rook, L.
    Agustí, J. C.
    Andrews, P.
    Armour-Chelu, M.
    Begun, D. R.
    Cameron, D. W.
    Daxner-Höck, G.
    Bonis, L. de
    Ekart, D.
    Fessaha, N.
    Fortelius, M.
    Franzen, J.-L.
    Mihály Gasparik, M.
    Gentry, A. G.
    Heissig, K.
    Hernyak, G.
    Kaiser, T.
    Koufos, G. D.
    Krolopp, E.
    Jánossy, D.
    Llenas, M.
    Meszáros, L.
    Müller, P.
    Renne, P.
    Rocék, Z.
    Sen, S.
    Scott, R.
    Szyndlar, Z.
    Theobald, G.
    Topál, G.
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Ungar, P. S.
    Ziegler, R.
    Recent Advances on Multidisciplinary Research at Rudabánya, Late Miocene (MN9), Hungary: a compendium2004Inngår i: Palaeontographia Italica, Vol. 89, s. 3-36Artikkel i tidsskrift (Fagfellevurdert)
  • 209. Betts, Marissa, J.
    et al.
    Claybourn, Thomas M.
    Brock, Glenn, A.
    Jago, James, B.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Paterson, John, R.
    Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia2019Inngår i: Acta Palaeontologica Polonica, ISSN 0567-7920, E-ISSN 1732-2421, Vol. 64, nr 3, s. 489-522Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The lower Cambrian (Series 2) White Point Conglomerate (WPC) on Kangaroo Island, South Australia contains exoticclasts representing a diverse array of lithologies, including metamorphics, chert, sandstone, and abundant carbonates,notably archaeocyath-rich bioclastic limestone. Acetic acid digestion of the WPC bioclastic limestone clasts reveals adiverse shelly fauna. This assemblage includes abundant organophosphatic brachiopods such as Cordatia erinae Brockand Claybourn gen. et sp. nov., Curdus pararaensis, Eodicellomus elkaniformiis, Eohadrotreta sp. cf. E. zhenbaensis,Eoobolus sp., Kyrshabaktella davidii, and Schizopholis yorkensis. Additional shelly taxa include the solenopleurid trilobiteTrachoparia? sp., the tommotiids Dailyatia odyssei, Dailyatia decobruta Betts sp. nov., Kelanella sp., and Lapworthellafasciculata, spines of the bradoriid arthropod Mongolitubulus squamifer, and several problematica, such as Stoibostrombuscrenulatus and a variety of tubular forms. The upper age limit for the WPC is constrained by biostratigraphic data fromthe overlying Marsden Sandstone and Emu Bay Shale, which are no younger than the Pararaia janeae Trilobite Zone(Cambrian Series 2, Stage 4). The shelly fossil assemblage from the WPC limestone clasts indicates an upper Dailyatiaodyssei Zone (= Pararaia tatei to lower P. janeae trilobite zones), equivalent to the Atdabanian–early Botoman of theSiberian scheme. This contrasts with the previously suggested late Botoman age for the limestone clasts, based on the diversearchaeocyath assemblage. The minor age difference between the WPC and its fossiliferous limestone clasts suggestsrelatively rapid reworking of biohermal buildups during tectonically-active phases of deposition in the Stansbury Basin.

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  • 210. Betts, Marissa, J.
    et al.
    Paterson, John, R.
    Jacquet, Sarah, M.
    Andrew, Anita S.
    Hall, Philip A.
    Jago, James, B.
    Jagodzinski, Elisabeth A.
    Preiss, Wolfgang V.
    Crowley, James L.
    Brougham, Tom
    Mathewson, Ciaran P.
    Garcia-Bellido, Diego C.
    Topper, Timothy, P.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Brock, Glenn, A.
    Early Cambrian chronostratigraphy and geochronology of South Australia2018Inngår i: Earth-Science Reviews, ISSN 0012-8252, E-ISSN 1872-6828, Vol. 185, s. 498-543Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The most successful chronostratigraphic correlation methods enlist multiple proxies such as biostratigraphy and chemostratigraphy to constrain the timing of globally important bio- and geo-events. Here we present the first regional, high-resolution shelly fossil biostratigraphy integrated with δ13C chemostratigraphy (and corresponding δ18O data) from the traditional lower Cambrian (Terreneuvian and provisional Cambrian Series 2) of South Australia. The global ZHUCE, SHICE, positive excursions II and III and the CARE are captured in lower Cambrian successions from the Arrowie and Stansbury basins. The South Australian shelly fossil biostratigraphy has a consistent relationship with the δ13C results, bolstering interpretation, identification and correlation of the excursions. Positive excursion II straddles the boundary between the Kulparina rostrata and Micrina etheridgei zones, and the CARE straddles the boundary between the M. etheridgei and Dailyatia odyssei zones, peaking in the lower parts of the latter zone. New CA-TIMS zircon dates from the upper Hawker Group and Billy Creek Formation provide geochronologic calibration points for the upper D. odyssei Zone and corresponding chemostratigraphic curve, embedding the lower Cambrian successions from South Australia into a global chronostratigraphic context. This multi-proxy investigation demonstrates the power of integrated methods for developing regional biostratigraphic schemes and facilitating robust global correlation of lower Cambrian successions from South Australia (part of East Gondwana) with coeval terranes on other Cambrian palaeocontinents, including South and North China, Siberia, Laurentia, Avalonia and West Gondwana.

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  • 211. Betts, Marissa, J.
    et al.
    Paterson, John, R.
    Jago, James, B.
    Jacquet, Sarah, M.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Topper, Timothy, P.
    Brock, Glenn, A.
    A new lower Cambrian shelly fossil biostratigraphy for South Australia2016Inngår i: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 36, s. 163-195Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Definition of early Cambrian chronostratigraphic boundaries is problematic with many subdivisions stillawaiting ratification. Integrated multi-proxy data from well-resolved regional-scale schemes are ultimately the key to resolving broader issues of global correlationwithin the Cambrian. In Australia, early Cambrian biostratigraphy has been based predominantly on trilobites. Phosphatic shelly fauna have great potential as biostratigraphic tools, especially in pre-trilobitic strata because they are widespread and readily preserved, but they have remained underutilised. Here we demonstrate their value in a new biostratigraphic scheme for the early Cambrian of South Australia using a diverse shelly fauna including tommotiids, brachiopods, molluscs and bradoriids. Biostratigraphic data are derived from ten measured stratigraphic sections across the Arrowie Basin, targeting Hawker Group carbonates including the Wilkawillina, Wirrapowie and Ajax limestones and the Mernmerna Formation. The stratigraphic ranges of shelly fossils are predictable and repeatable across the Arrowie Basin, allowing three discrete shelly biozones to be identified, spanning Terreneuvian, Stage 2 to Series 2, Stages 3–4. The Kulparina rostrata Zone (new) and part of the overlyingMicrina etheridgei Zone (new) are pre-trilobitic (predominantly Terreneuvian). The Cambrian Series 2, Stage 3 Dailyatia odyssei Zone (new) features a very diverse shelly fauna and will be described in detail in a separate publication. These zones provide robust means to correlate Terreneuvian–Series 2 successions in neighbouring coeval basins in Australia, particularly the Stansbury Basin. Wider correlation is possible throughout East Gondwana, and especially with South China.

  • 212. Betts, Marissa, J.
    et al.
    Paterson, John, R.
    Jago, James, B.
    Jacquet, Sarah, M.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Topper, Timothy, P.
    Brock, Glenn, A.
    A new lower Cambrian shelly fossil biostratigraphy for South Australia:Reply2017Inngår i: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 44, s. 262-264Artikkel i tidsskrift (Fagfellevurdert)
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  • 213.
    Betts, Marissa, J.
    et al.
    Department of Biological Sciences, Macquarie University, Sydney, 2109, Australia.
    Paterson, John, R.
    Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales 2351, Australia.
    Jago, James, B.
    School of Natural and Built Environments, University of South Australia, Mawson Lakes, South Australia 5095, Australia.
    Jacquet, Sarah, M.
    Department of Biological Sciences, Macquarie University, Sydney, 2109, Australia.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Topper, Timothy, P.
    Palaeoecosystems Group, Department of Earth Sciences, Durham University, Durham, DH1 3LE, UK.
    Brock, Glenn, A.
    Department of Biological Sciences, Macquarie University, Sydney, 2109, Australia.
    Global correlation of the early Cambrian of South Australia: Shelly faunaof the Dailyatia odyssei Zone2017Inngår i: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 46, s. 240-279Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A lack of well resolved biostratigraphic data has prevented robust regional and global correlation of lower Cambriansuccessions from South Australia. A new early Cambrian biostratigraphy, based on data derived from 21measured stratigraphic sections and drill cores (11 described herein) reveals the abundance and diversity ofshelly fauna from the Arrowie Basin, and the value of early Cambrian “small shelly fossils” (SSF) for biostratigraphicstudies. Here we examine shelly fauna associated with the youngest of three recently establishedbiozones, the Dailyatia odyssei Taxon Range Zone (hereafter D. odyssei Zone), and their correlative potential.The D. odyssei Zone features a diverse suite of tommotiids, organophosphatic brachiopods, bradoriid arthropods,molluscs and phosphatic problematica. This fauna permits strong correlation (often at species-level) with othermajor early Cambrian terranes, particularly Antarctica, South China and Laurentia, and suggest a Cambrian Series2, Stages 3–4 age for the D. odyssei Zone. Bradoriids have proven to be useful biostratigraphic tools. Four newspeciesand three new genera are described herein: Acutobalteus sinuosus gen. et sp. nov., Eozhexiella adnyamathanha gen. etsp. nov., Manawarra jonesi gen. et sp. nov. and Mongolitubulus descensus sp. nov. The description of Eohadrotreta sp.cf. zhenbaensis represents the first occurrence of the acrotretoid brachiopod Eohadrotreta from Australia.

  • 214.
    Betts, Marissa J.
    et al.
    Macquarie University, Sydney, Australia.
    Topper, Timothy P.
    Geological Museum, Copenhagen.
    Valentine, James L.
    Macquarie University, Sydney, Australia.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Brock, Glenn A.
    Macquarie university, Australia.
    A new early Cambrian bradoriid (Arthropoda) assemblage from the northern Flinders Ranges, South Australia2014Inngår i: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 25, s. 420-437Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A new assemblage of early Cambrian bivalved arthropods (Bradoriida) is described from the Arrowie Syncline in the northern Flinders Ranges, South Australia. The well preserved, largely endemic fauna comprises a total of six taxa (including five new species): Jiucunella phaseloa sp. nov., Jixinlingella daimonikoa sp. nov., Mongolitubulus anthelios sp. nov., Neokunmingella moroensis sp. nov., Phasoia cf. spicata ( Öpik, 1968), and Sinskolutella cuspidata sp. nov. This assemblage is derived from a carbonate sedimentary package representing a high energy, shallow water archaeocyath-Renalcis biohermal facies of Terreneuvian, Stage 2 age which transitions up-section to a more restricted, low energy, intra-shelf lagoonal environment that correlates with a Cambrian Series 2, Stage 3 age. The new taxon J. phaseloa sp. nov., has a first appearance datum (FAD) in shallow water biohermal facies of the Hideaway Well Member of the Wilkawillina Limestone at a level 47 m below the FAD of Pelagiella subangulata which is taken to approximate the base of Series 2, Stage 3 in South Australia. Along with Liangshanella circumbolina, this makes J. phaseloa sp. nov. amongst the oldest bivalved arthropods in South Australia and potentially greater Gondwana. The presence of 25 bradoriid taxa from the early Cambrian of South Australia suggests East Gondwana represents a major centre of origin for the Bradoriida.

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  • 215. Bezenjani, R. Nasiri
    et al.
    Pease, V.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Shalaby, M. H.
    Kadi, K. A.
    Kozdroj, W.
    Detrital zircon geochronology and provenance of the Neoproterozoic Hammamat Group (Igla Basin), Egypt and the Thalbah Group, NW Saudi Arabia: Implications for regional collision tectonics2014Inngår i: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 245, s. 225-243Artikkel i tidsskrift (Fagfellevurdert)
  • 216.
    Biagion, Cristian
    et al.
    Università di Pisa, Italy.
    Bosi, Ferdinando
    Sapienza Università di Roma, Italy.
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Pasero, Marco
    Università di Pisa, Italy.
    The crystal structure of turneaureite, Ca5(AsO4)3Cl, the arsenate analog of chlorapatite and its relationships with the arsenate apatites johnbaumite and svabite2017Inngår i: American Mineralogist, ISSN 0003-004X, E-ISSN 1945-3027, Vol. 102, s. 1981-1986Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The crystal structure of turneaureite, ideally Ca5(AsO4)3Cl, was studied using a specimen from the Brattfors mine, Nordmark, Värmland, Sweden, by means of single-crystal X-ray diffraction data. The structure was refinedto R1 = 0.017 on the basis of 716 unique reflectios with Fo > 4σ(Fo) in the P63/m space group, with unit-cell parameters a = 9.9218(3), c = 6.8638(2) Å, V = 585.16(4) Å3. The chemical composition of the sample, determined by electron-microprobe analysis, is (in wt%; average of 10 spot analyses): SO3 0.22, P2O5 0.20, V2O5 0.01, As2O5 51.76, SiO2 0.06, CaO 41.39, MnO 1.89, SrO 0.12, BaO 0.52, PbO 0.10, Na2O 0.02, F 0.32, Cl 2.56, H2Ocalc 0.58, O(≡F+Cl) –0.71, total 99.04. On the basis of 13 anions per formula unit, the empirical formula corresponds to (Ca4.82Mn0.17Ba0.02Sr0.01)∑5.02 (As2.94P0.02S0.02Si0.01)∑2.99O12[Cl0.47(OH)0.42F0.11]∑1.00.Turneaureite is topologically similar to the other members of the apatite supergroup: columns of face-sharing M1 polyhedra running along c are connected through TO4 tetrahedra with channels hosting M2 cations and X anions. Owing to its particular chemical composition, the studied turneaureite can be considered as a ternary calcium arsenate apatite; consequently it has several partially filledanion sites within the anion columns. Polarized single-crystal FTIR spectra of the studied sample indicate stronger hydrogen bonding and less diverse short-range atom arrangements around (OH) groups in turneaureite as compared to the related minerals johnbaumite and svabite. An accurate knowledge of the atomic arrangement of this apatite-remediation mineral represents an improvement in our understanding of minerals able to sequester and stabilize heavy metals such as arsenic in polluted areas.

  • 217.
    Biagioni, Cristian
    University of Pisa.
    Pasero, Marco
    University of Pisa.
    Bonaccorsi, Elena
    Lepore, Giovanni Orazio
    Zaccarini, Federica
    University of Leoben.
    Skogby, Henrik
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). VI. Tl-bearingalum-(K) and voltaite from the Fornovolasco mining complex2020Inngår i: American Mineralogist, ISSN 0003-004X, E-ISSN 1945-3027, Vol. 105, s. 1088-1098Artikkel i tidsskrift (Fagfellevurdert)
  • 218.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy.
    Bindi, Luca
    Università di Firenze, Italy.
    Mauro, Daniela
    Università di Pisa.
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Crystal chemistry of sulfates from the Apuan Alps (Tuscany, Italy). V. Scordariite, K8(Fe3+0.67ο0.33)[Fe3+3O(SO4)6(H2O)3)]2(H2O)11 , a new metavoltine-related mineral2019Inngår i: Minerals, E-ISSN 2075-163X, Vol. 9, nr 11, s. 1-14, artikkel-id 0702Artikkel i tidsskrift (Fagfellevurdert)
    Fulltekst (pdf)
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  • 219.
    Biagioni, Cristian
    et al.
    Università di Pisa, Pisa, Italy.
    Bonaccorsi, Elena
    Università di Pisa, Pisa, Italy.
    Perchiazzi, Natale
    Università di Pisa, Pisa, Italy.
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Zaccarini, Federica
    Univeristy of Leoben, Leoben, Austria.
    Derbylite and graeserite from the Monte Arsiccio mine, Apuan Alps,Tuscany, Italy: occurrence and crystal-chemistry2020Inngår i: Mineralogical magazine, ISSN 0026-461X, E-ISSN 1471-8022, Vol. 84, nr 5, s. 766-777Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    New occurrences of derbylite, Fex2+Fe3+4–2xTi4+3+xSb3+O13(OH), and graeserite, Fex2+Fe3+4–2xTi4+3+xAs3+O13(OH), have been identified in the Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. Derbylite occurs as prismatic to acicular black crystals in carbonate veins. Iron and Ti are replaced by V (up to 0.29 atoms per formula unit, apfu) and minor Cr (up to 0.04 apfu). Mössbauer spectroscopy confirmed the occurrence of Fe2+ (up to 0.73 apfu), along with Fe3+. The Sb/(As+Sb) atomic ratio ranges between 0.73 and 0.82. Minor Ba and Pb (up to 0.04 apfu) substitute. Derbylite is monoclinic, space group P21/m, with unit-cell parameters a = 7.1690(3), b = 14.3515(7),c = 4.9867(2) Å, β = 104.820(3)° and V = 495.99(4) Å3. The crystal structure was refined to R1 = 0.0352 for 1955 reflections with Fo > 4σ(Fo). Graeserite occurs as prismatic to tabular black crystals, usually twinned, in carbonate veins or as porphyroblasts in schist. Graeserite in the first kind of assemblage is V rich (up to 0.66 apfu), and V poor in the second kind (0.03 apfu). Along with minor Cr (up to 0.06 apfu), this element replaces Fe and Ti. The occurrence of Fe2+ (up to 0.68 apfu) is confirmed by Mössbauer spectroscopy. Arsenic is dominant over Sb and detectable amounts of Ba and Pb have been measured (up to 0.27 apfu). Graeserite is monoclinic, space group C2/m, with unit-cell parameters for two samples: a = 5.0225(7), b = 14.3114(18), c = 7.1743(9) Å,β = 104.878(3)°, V = 498.39(11) Å3; and a = 5.0275(4), b = 14.2668(11), c = 7.1663(5) Å, β = 105.123(4)° and V = 496.21(7) Å3. The crystal structures were refined to R1 = 0.0399 and 0.0237 for 428 and 1081 reflections with Fo > 4σ(Fo), respectively. Derbylite and graeserite are homeotypic. They share the same tunnel structure, characterised by an octahedral framework and cuboctahedral cavities, hosting (As/Sb)O3 groups and (Ba/Pb) atoms.

  • 220.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy.
    Bosi, Ferdinando
    Sapienza Università di Roma, Italy.
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Pasero, Marco
    Università di Pisa, Italy.
    The crystal structure of svabite, Ca5(AsO4)3F, an arsenate member of the apatite supergroup2016Inngår i: American Mineralogist, ISSN 0003-004X, E-ISSN 1945-3027, Vol. 101, s. 1750-1755Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The crystal structure of svabite, ideally Ca5(AsO4)3F, was studied using a specimen from the Jakobsberg mine, Värmland, Sweden, by means of single-crystal X‑ray diffraction data. The structure was refined to R1 = 0.032 on the basis of 928 unique reflections with Fo > 4s(Fo) in the P63/m space group, with unit-cell parameters a = 9.7268(5), c = 6.9820(4) Å, V = 572.07(5) Å3. The chemical composition of the sample, determined by electron-microprobe analysis, is (in wt%, average of 10 spot analyses): SO3 0.49, P2O5 0.21, V2O5 0.04, As2O5 51.21, SiO2 0.19, CaO 39.31, MnO 0.48, SrO 0.03, PbO 5.19, Na2O 0.13, F 2.12, Cl 0.08, H2Ocalc 0.33, O (≡ F+Cl) –0.91, total 98.90. On the basis of 13 anions per formula unit, the empirical formula corresponds to (Ca4.66Pb0.16Mn0.04Na0.03)Σ4.89(As2.96S0.04Si0.02P0.02)Σ3.04O12[F0.74(OH)0.24Cl0.01]. Svabite is topologically similar to the other members of the apatite supergroup: columns of face-sharing M1 polyhedra running along c are connected through TO4 tetrahedra with channels hosting M2 cations and X anions. The crystal structure of synthetic Ca5(AsO4)3F was previously reported as triclinic. On the contrary, the present refinement of the crystal structure of svabite shows no deviations from the hexagonal symmetry. An accurate knowledge of the atomic arrangement of this apatite-remediation mineral represents an improvement in our understanding of minerals able to sequester and stabilize heavy metals such as arsenic in polluted areas.

  • 221. Biagioni, Cristian
    et al.
    Bosi, Ferdinando
    Mauro, Daniela
    Skogby, Henrik
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Dini, Andrea
    Zaccarini, Federica
    Dutrowite, Na(Fe2+2.5Ti0.5)Al6(Si6O18)(BO3)3(OH)3O, a new mineral from the Apuan Alps (Tuscany, Italy): the first member of the tourmaline supergroup with Ti as a species-forming chemical constituent2023Inngår i: European journal of mineralogy, ISSN 0935-1221, E-ISSN 1617-4011, Vol. 35, nr 1, s. 81-94Artikkel i tidsskrift (Fagfellevurdert)
  • 222.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy..
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Miyawaki, Ritsuro
    National Museum of Nature and Science, Tsukuba, Japan.
    Pasero, Marco
    Università di Pisa, Italy..
    Nuove specie mineralogiche Italiane2019Inngår i: Rivista Mineralogica Italiana, Vol. 43, nr 4, s. 256-262Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
    Fulltekst (pdf)
    fulltext
  • 223.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy..
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Pasero, Marco
    Università di Pisa, Italy..
    Nuovi minerali Italiana - La approvazioni 20172018Inngår i: Revista Mineralogica Italiana, ISSN 0391-9641, Vol. 42, nr 3, s. 190-197Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
    Fulltekst (pdf)
    fulltext
  • 224.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy..
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Pasero, Marco
    Università di Pisa, Italy..
    Karlsson, Andreas
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Bosi, Ferdinando
    Sapienza Università di Roma, Italy.
    Hydroxylhedyphane, Ca2Pb3(AsO4)3(OH), a new member of the apatite supergroup from Långban, Sweden2019Inngår i: European journal of mineralogy, ISSN 0935-1221, E-ISSN 1617-4011, Vol. 31, nr 5-6, s. 1007-1014Artikkel i tidsskrift (Fagfellevurdert)
  • 225.
    Biagioni, Cristian
    et al.
    Università di Pisa, Italy..
    Pasero, Marco
    Università di Pisa, Italy..
    Hålenius, Ulf
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Bosi, Ferdinando
    Sapienza Università di Roma, Italy.
    Bianchiniite, Ba2(Ti4+V3+)(As2O5)2OF, a new diarsenite mineral fromthe Monte Arsiccio mine, Apuan Alps, Tuscany, Italy2021Inngår i: Mineralogical magazine, ISSN 0026-461X, E-ISSN 1471-8022, Vol. 3, s. 354-363Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The new mineral bianchiniite, Ba2(Ti4+V3+)(As2O5)2OF, has been discovered in the Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. It occurs as brown {001} tabular crystals, up to 1 mm across, with a vitreous lustre. It is brittle, with a perfect {001} cleavage. Streak is brownish. In reflected light, bianchiniite is grey, with orange–yellow internal reflections. It is weakly bireflectant, with a very weak anisotropy in shades of grey. Minimum and maximum reflectance data for COM wavelengths [Rmin/Rmax (%), (λ, nm)] are: 5.0/5.8 (470),5.7/6.5 (546), 5.7/7.0 (589) and 5.2/6.3 (650). Electron microprobe analyses gave (wt.% – average of 10 spot analyses): TiO2 10.34, V2O33.77, Fe2O3 3.76,As2O3 44.36, Sb2O3 0.22, SrO 0.45, BaO 34.79, PbO 0.28, F 1.77, sum 99.74, –O=F–0.75, total 98.99. On the basis of 12 anions per formula unit, the empirical formula of bianchiniite is (Ba2.00Sr0.04Pb0.02)Σ2.06(Ti4+1.14V3+0.44Fe3+0.42)Σ2.00[(As3.96Sb0.02)Σ3.98O10](O1.18F0.82)Σ2.00. Bianchiniite is tetragonal, space group I4/mcm, with unit-cell parameters a = 8.7266(4), c = 15.6777(7) Å, V = 1193.91(12) Å3 and Z = 8. Its crystal structure was refined from single-crystal X-ray diffraction data to R1 = 0.0134 on the basis of 555 unique reflections with Fo > 4σ(Fo)and 34 refined parameters. The crystal structure shows columns of corner-sharing [Ti/(V,Fe)]-centred octahedra running along c, connected along a and b through (As2O5) dimers. A {001} layer of Ba-centred [10+2]-coordinated polyhedra is intercalated between (As2O5) dimers. Bianchiniite has structural relations with fresnoite- and melilite-group minerals. The name honours the two mineral collectors Andrea Bianchini (b. 1959) and Mario Bianchini (b. 1962) for their contribution to the knowledge of the mineralogy of pyrite ± baryte ± iron-oxide ore deposits from the Apuan Alps.

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  • 226. Bibi, Faysal
    et al.
    Pante, Michael
    Souron, Antoine
    Stewart, Kathlyn
    Varela, Sara
    Werdelin, Lars
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Boisserie, Jean-Renaud
    Fortelius, Mikael
    Hlusko, Leslea
    Njau, Jackson
    de la Torre, Ignacio
    Paleoecology of the Serengeti during the Oldowan-Acheulean transition at Olduvai Gorge, Tanzania: The mammal and fish evidence2017Inngår i: Journal of Human Evolution, ISSN 0047-2484, E-ISSN 1095-8606Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Eight years of excavation work by the Olduvai Geochronology and Archaeology Project (OGAP) has produced a rich vertebrate fauna from several sites within Bed II, Olduvai Gorge, Tanzania. Study of these as well as recently re-organized collections from Mary Leakey's 1972 HWK EE excavations here provides a synthetic view of the faunal community of Olduvai during Middle Bed II at ~1.7e1.4 Ma, an interval that captures the local transition from Oldowan to Acheulean technology. We expand the faunal list for this interval, name a new bovid species, clarify the evolution of several mammalian lineages, and record new local first and last appearances. Compositions of the fish and large mammal assemblages support previous indications for the dominance of open and seasonal grassland habitats at the margins of an alkaline lake. Fish diversity is low and dominated by cichlids, which indicates strongly saline conditions. The taphonomy of the fish assemblages supports reconstructions of fluctuating lake levels with mass die-offs in evaporating pools. The mammals are dominated by grazing bovids and equids. Habitats remained consistently dry and open throughout the entire Bed II sequence, with no major turnover or paleoecological changes taking place. Rather, wooded and wet habitats had already given way to drier and more open habitats by the top of Bed I, at 1.85e1.80 Ma. This ecological change is close to the age of the Oldowan-Acheulean transition in Kenya and Ethiopia, but precedes the local transition in Middle Bed II. The Middle Bed II largemammal community is much richer in species and includes a much larger number of large-bodied species (>300 kg) than the modern Serengeti. This reflects the severity of Pleistocene extinctions on African large mammals, with the loss of large species fitting a pattern typical of defaunation or ‘downsizing’ by human disturbance. However, trophic network (food web) analyses show that the Middle Bed II communitywas robust, and comparisons with the Serengeti community indicate that the fundamental structure of foodwebs remained intact despite Pleistocene extinctions. The presence of a generalized meateating hominin in the Middle Bed II community would have increased competition among carnivores and vulnerability among herbivores, but the high generality and interconnectedness of the Middle Bed II food web suggests this community was buffered against extinctions caused by trophic interactions.

  • 227. Bicknell, Russell D.C.
    et al.
    Paterson, John, R.
    Caron, Jean-Bernhard
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    The gnathobasic spine microstructure of recent and Silurian chelicerates and the Cambrian artiopodan Sidneyia: Functional and evolutionary implications2018Inngår i: Arthropod structure & development, ISSN 1467-8039, E-ISSN 1873-5495, Vol. 47, s. 12-24Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Gnathobasic spines are located on the protopodal segments of the appendages of various euarthropod taxa, notably chelicerates. Although they are used to crush shells and masticate soft food items, the microstructure of these spines are relatively poorly known in both extant and extinct forms. Here we compare the gnathobasic spine microstructures of the Silurian eurypterid Eurypterus tetragonophthalmus from Estonia and the Cambrian artiopodan Sidneyia inexpectans from Canada with those of the Recent xiphosuran chelicerate Limulus polyphemus to infer potential variations in functional morphology through time. The thickened fibrous exocuticle in L. polyphemus spine tips enables effective prey mastication and shell crushing, while also reducing pressure on nerve endings that fill the spine cavities. The spine cuticle of E. tetragonophthalmus has a laminate structure and lacks the fibrous layers seen in L. polyphemus spines, suggesting that E. tetragonophthalmus may not have been capable of crushing thick shells, but a durophagous habit cannot be precluded. Conversely, the cuticle of S. inexpectans spines has asimilar fibrous microstructure to L. polyphemus, suggesting that S. inexpectans was a competent shell crusher. This conclusion is consistent with specimens showing preserved gut contents containing various shelly fragments. The shape and arrangement of the gnathobasic spines is similar for both L. polyphemusand S. inexpectans, with stouter spines in the posterior cephalothoracic or trunk appendages, respectively.This differentiation indicates that crushing occurs posteriorly, while the gnathobases on anterior appendages continue mastication and push food towards and into the mouth. The results of recent phylogenetic analyses that considered both modern and fossil euarthropod clades show that xiphosurans and eurypterids are united as crown-group euchelicerates, with S. inexpectans placed within more basalartiopodan clades. These relationships suggest that gnathobases with thickened fibrous exocuticle, if not homoplasious, may be plesiomorphic for chelicerates and deeper relatives within Arachnomorpha. This study shows that the gnathobasic spine microstructure best adapted for durophagy has remained remarkably constant since the Cambrian.

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  • 228. Bieker, Vanessa C
    et al.
    Battlay, Paul
    Petersen, Bent
    Sun, Xin
    Wilson, Jonathan
    Brealey, Jaelle C
    Bretagnolle, François
    Nurkowski, Kristin
    Lee, Chris
    Barreiro, Fátima Sánchez
    Dalén, Love
    Naturhistoriska riksmuseet, Enheten för bioinformatik och genetik.
    Uncovering the genomic basis of an extraordinary plant invasion2022Inngår i: Science Advances, E-ISSN 2375-2548, Vol. 8, nr 34Artikkel i tidsskrift (Fagfellevurdert)
  • 229. Biel, Christina
    et al.
    Subias, Ignacio
    Billström, Kjell
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Acevedo, Rogelio
    Multi-isotope approach for the identification of metal and fluid sources of the Arroyo Rojo VMS deposit, Tierra del Fuego, Argentina2016Inngår i: Ore Geology Reviews, ISSN 0169-1368, E-ISSN 1872-7360Artikkel i tidsskrift (Fagfellevurdert)
  • 230. Bieser, Johannes
    et al.
    Amptmeijer, David J.
    Daewel, Ute
    Kuss, Joachim
    Soerensen, Anne L.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Schrum, Corinna
    The 3D biogeochemical marine mercury cycling model MERCY v2.0 – linking atmospheric Hg to methylmercury in fish2023Inngår i: Geoscientific Model Development, ISSN 1991-959X, E-ISSN 1991-9603, Vol. 16, nr 9, s. 2649-2688Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Mercury (Hg) is a pollutant of global concern. Due to anthropogenic emissions, the atmospheric and surface ocean Hg burden has increased substantially since preindustrial times. Hg emitted into the atmosphere gets transported on a global scale and ultimately reaches the oceans. There it is transformed into highly toxic methylmercury (MeHg) that effectively accumulates in the food web. The international community has recognized this serious threat to human health and in 2017 regulated Hg use and emissions under the UN Minamata Convention on Mercury. Currently, the first effectiveness evaluation of the Minamata Convention is being prepared, and, in addition to observations, models play a major role in understanding environmental Hg pathways and in predicting the impact of policy decisions and external drivers (e.g., climate, emission, and land-use change) on Hg pollution. Yet, the available model capabilities are mainly limited to atmospheric models covering the Hg cycle from emission to deposition. With the presented model MERCY v2.0 we want to contribute to the currently ongoing effort to improve our understanding of Hg and MeHg transport, transformation, and bioaccumulation in the marine environment with the ultimate goal of linking anthropogenic Hg releases to MeHg in seafood.

    Here, we present the equations and parameters implemented in the MERCY model and evaluate the model performance for two European shelf seas, the North and Baltic seas. With the model evaluation, we want to establish a set of general quality criteria that can be used for evaluation of marine Hg models. The evaluation is based on statistical criteria developed for the performance evaluation of atmospheric chemistry transport models. We show that the MERCY model can reproduce observed average concentrations of individual Hg species in water (normalized mean bias: HgT 17 %, Hg0 2 %, MeHg −28 %) in the two regions mentioned above. Moreover, it is able to reproduce the observed seasonality and spatial patterns. We find that the model error for HgT(aq) is mainly driven by the limitations of the physical model setup in the coastal zone and the availability of data on Hg loads in major rivers. In addition, the model error in calculating vertical mixing and stratification contributes to the total HgT model error. For the vertical transport we find that the widely used particle partitioning coefficient for organic matter of log(kd)=5.4 is too low for the coastal systems. For Hg0 the model performance is at a level where further model improvements will be difficult to achieve. For MeHg, our understanding of the processes controlling methylation and demethylation is still quite limited. While the model can reproduce average MeHg concentrations, this lack of understanding hampers our ability to reproduce the observed value range. Finally, we evaluate Hg and MeHg concentrations in biota and show that modeled values are within the range of observed levels of accumulation in phytoplankton, zooplankton, and fish. The model performance demonstrates the feasibility of developing marine Hg models with similar predictive capability to established atmospheric chemistry transport models. Our findings also highlight important knowledge gaps in the dynamics controlling methylation and bioaccumulation that, if closed, could lead to important improvements of the model performance.

    Fulltekst (pdf)
    Bieser et al 2023
  • 231.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Danielsson, Sara
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Ek, Caroline
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Comments Concerning the National Swedish Contaminant Monitoring Programme in Marine Biota, 20172017Rapport (Annet vitenskapelig)
    Fulltekst (pdf)
    fulltext
  • 232.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Danielsson, Sara
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Ek, Caroline
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Comments concerning the National Swedish Contaminant Monitoring Programme in Marine Biota, 2017 (2016 years data)2017Rapport (Annet vitenskapelig)
    Fulltekst (pdf)
    fulltext
  • 233.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Danielsson, Sara
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Comments concerning the national Swedish contaminant monitoring programme in marine biota, 20162016Rapport (Annet vitenskapelig)
    Fulltekst (pdf)
    fulltext
  • 234.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Danielsson, Sara
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Faxneld, Suzanne
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Vasileiou, Maria
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Fång, Johan
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Dahlgren, Henrik
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Kylberg, Eva
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Staveley Öhlund, Jill
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Jones, Douglas
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Stenström, Malin
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Berger, Urs
    Stockholms universitet.
    Alsberg, Tomas
    Stockholms universitet.
    Kärsrud, Anne-Sofie
    Stockholms universitet.
    Sundbom, Marcus
    Stockholms universitet.
    Holm, Karin
    Stockholms universitet.
    Eriksson, Ulla
    Stockholms universitet.
    Egebäck, Anna-Lena
    Stockholms universitet.
    Haglund, Peter
    Umeå universitet.
    Kaj, Lennart
    IVL.
    Comments concerning the national Swedish contaminant monitoring programme in marine biota, 20152015Rapport (Annet vitenskapelig)
    Fulltekst (pdf)
    fulltext
  • 235.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Eriksson, Ulla
    Stockholm university.
    Nyberg, Elisabeth
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Miller, Aroha
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Danielsson, Sara
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Consequences of using pooled versus individual samples for designingenvironmental monitoring sampling strategies2014Inngår i: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, nr 94, s. 177-182Artikkel i tidsskrift (Fagfellevurdert)
  • 236.
    Bignert, Anders
    et al.
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Helander, Björn
    Naturhistoriska riksmuseet, Enheten för miljöforskning och övervakning.
    Monitoring of contaminants and their effects on the common Guillemot and the White-tailed sea eagle2015Inngår i: Journal of Ornithology = Journal fur Ornithologie, ISSN 0021-8375, E-ISSN 1439-0361Artikkel i tidsskrift (Fagfellevurdert)
  • 237.
    Billström, K
    et al.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Evins, P
    Martinsson, O
    Jeon, Heejin
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Weihed, P
    Conflicting zircon vs. titanite U-Pb age systematics and the deposition of the host volcanic sequence to Kiruna-type and IOCG deposits in northern Sweden, Fennoscandian shield2018Inngår i: Precambrian ResearchArtikkel i tidsskrift (Fagfellevurdert)
  • 238.
    Billström, Kjell
    et al.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Broman, Curt
    Larsson, Alfred
    Schersten, Anders
    Schmitt, Melanie
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Sandstone-hosted Pb-Zn deposits along the margin of the Scandinavian Caledonides and their possible relationship with nearby Pb-Zn vein mineralisation2020Inngår i: Ore Geology Reviews, ISSN 0169-1368, E-ISSN 1872-7360Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Numerous sandstone-hosted Pb-Zn deposits occur along the present-day erosional front of the eastern Scandinavian Caledonides. The largest deposit is Laisvall (64.3 Mt at 4.0% Pb, 0.6% Zn and 9.0g/t Ag) and since mineralisations generally share similar characteristics (reminding of both SEDEX and MVT-style) the term Laisvall-type has often been used. Typically, mineralised zones occur along sedimentary bedding and consist of disseminated galena and sphalerite and lesser amounts of calcite, fluorite, baryte, pyrite and sericite forming a cement that fill interstitial pores in Neoproterozoic/Eocambrian (e.g. Laisvall) to Cambrian (e.g. Vassbo) sandstones.

    Deposits occur both in autochtonous and allochtonous sedimentary rocks, and a broad consensus exists about their epigenetic nature, their spatial relationships to syn-sedimentary faults and that ore fluids have scavenged metals from the crystalline basement. However, the detailed ore depositional history and the timing of ore deposition have remained more controversial. New analyses aimed to complement earlier Rb-Sr data (crush-leach technique using sphalerite) fail to support a published three-point isochron age of 467±5 Ma. This is probably due to syn-ore mixing between fluids carrying isotopically variable strontium and inherited problems to analyse sphalerite grains that strictly were deposited from a single ore pulse. Tentatively, strontium in the ores originate from a mix of components derived from the basement, seawater and the local sedimentary host sequences. The lead component has highly radiogenic compositions, and data define sub-parallel linear arrays interpreted to essentially represent mixing of isotopically different types of lead released from regional basement rocks.

    There are obvious similarities when comparing features of deposits representing two Pb-Zn ore styles, the sandstone-hosted dissemination and the fracture-controlled mineralisation in the granite-dominated basement occurring further east of the Caledonian margin. These include low temperature brines responsible for mineral deposition, the mineralogy and the nature of Rb-Sr and Pb isotope data. We suggest that these types of mineralisation have a common origin and time of emplacement, but it is elusive to propose a well-constrained age. Nonetheless, field observations and other evidence suggest that ore formation is due to large-scale fluid flow triggered by the transition from an extensional to compressional tectonic setting at about 500 Ma. Connected to this mid-Cambrian stage was the development of syn-sedimentary faults and fractures in the basement and in overlying consolidated sandstones. 

  • 239.
    Billström, Kjell
    et al.
    Naturhistoriska riksmuseet, Enheten för geovetenskap. Department of Geological Sciences, Swedish Museum of Natural History, Stockholm, Sweden.
    Söderhielm, Johan
    Geological Survey of Sweden, Malå Office, Uppsala, Sweden.
    Broman, Curt
    Department of Geological Sciences, Stockholm University, Stockholm, Sweden.
    Sundblad, Krister
    Institute of Earth Sciences, Saint Petersburg State University, St Petersburg, Russia.
    Solstad, a Co-Se-bearing copper ore in the Västervik quartzites, Sweden2022Inngår i: GFF, ISSN 1103-5897, E-ISSN 2000-0863, s. 1-14Artikkel i tidsskrift (Fagfellevurdert)
  • 240.
    Bindi, Luca
    et al.
    Università degli Studi di Firenze.
    Holtstam, Dan
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Fantappiè, Giulia
    Università degli Studi di Firenze.
    Andersson, Ulf B
    Luossavaara-Kiirunavaara AB.
    Bonazzi, Paola
    Università degli Studi di Firenze.
    Ferriperbøeite-(Ce), [CaCe3]å=4[Fe3+Al2Fe2+]å=4[Si2O7][SiO4]3O(OH)2, a new mineral of the gatelite supergroup, from the Nya Bastnäs Fe-Cu-REE deposit, Västmanland, Sweden.2018Inngår i: European journal of mineralogy, ISSN 0935-1221, E-ISSN 1617-4011, Vol. 30, s. 537-544Artikkel i tidsskrift (Fagfellevurdert)
  • 241.
    Bing, Pan
    et al.
    Nanjing Institute of Geology & Palaeontology.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Brock, Glenn, A.
    Macquarie University.
    Topper, Timothy, P.
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Holmer, Lars, E.
    Uppsala Universitet.
    Li, Luoyang
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Li, Guoxiang
    Nanjing Institute of Geology and Palaeontology.
    Early Cambrian organophosphatic brachiopods from the Xinji Formation, at Shuiyu section, Shanxi Province, North China2020Inngår i: Palaeoworld, ISSN 1871-174X, E-ISSN 1875-5887, Vol. 29, s. 512-533Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Abundant and diverse small shelly fossils have been reported from Cambrian Series 2 in North China, but the co-occurring brachiopods are still poorly known. Herein, we describe seven genera, five species and two undetermined species of organophosphatic brachiopods including one new genus and new species from the lower Cambrian Xinji Formation at Shuiyu section, located on the southern margin of North China Platform. The brachiopod assemblage comprises one mickwitziid (stem group brachiopoda), Paramickwitzia boreussinaensis n. gen. n. sp., a paterinide, Askepasma toddense Laurie, 1986, an acrotretoid, Eohadrotreta cf. zhenbaensis Li and Holmer, 2004, a botsfordiid, Schizopholis yorkensis (Holmer and Ushatinskaya in Gravestock et al., 2001) and three linguloids, Spinobolus sp., Eodicellomus cf. elkaniiformis Holmer and Ushatinskaya in Gravestock et al., 2001 and Eoobolus sp. This brachiopod assemblage suggests a late Age 3 to early Age 4 for the Xinji Formation and reveals a remarkably strong connection with coeval faunas from East Gondwana, particularly the Hawker Group in South Australia. The high degree of similarity (even at species level) further supports a close palaeogeographic position between the North China Platform and Australian East Gondwana during the early Cambrian as indicated by small shelly fossil data.

    Fulltekst (pdf)
    fulltext
  • 242. Bing, Pan
    et al.
    Skovsted, Christian
    Naturhistoriska riksmuseet, Enheten för paleobiologi.
    Sun, Haijing
    Li, Guoxiang
    Biostratigraphical and palaeogeographical implications of Early Cambrian hyoliths from the North China Platform2019Inngår i: Alcheringa, ISSN 0311-5518, E-ISSN 1752-0754, Vol. 43, s. 351-380Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    A succession of diverse hyolith assemblages comprising 10 genera and 14 species are reported from the lower Cambrian Shangwan and Sanjianfang sections of the Xinji Formation, and Xiaomeiyao section of the Houjiashan Formation, which crop out along the southern margin of the North China Platform. Most of the specimens are represented by both conchs and opercula. The identified orthothecids include Conotheca australiensis, Cupitheca holocyclata, C. costellata, Neogloborilus applanatus, N. spinatus, Tegminites hymenodes, Triplicatella disdoma, T. xinjia sp. nov. and Paratriplicatella shangwanensis gen. et sp. nov. The hyolithids comprise Protomicrocornus triplicensis gen. et sp. nov., Microcornus eximius, M. petilus, Parkula bounites and Parakorilithes mammillatus. Some anomalous taxa possess characteristics of both Hyolithida and Orthothecida, such as C. australiensis, Neogloborilus and P. triplicensis. Protomicrocornus may constitute a sister group of other hyolithids. The teeth of Parkula bounites and clavicles of Parakorilithes mammillatus are documented for the first time. The hyolith assemblages from North China are probably coeval, and can be correlated with the Cambrian upper Stage 3–lower Stage 4. Many taxa are also globally distributed and have significant potential for biostratigraphical correlations. In accordance, the hyoliths from North China reveal closest compositional similarities to faunas from eastern Gondwana, and especially South Australia. However, some taxa are shared with Laurentian assemblages suggesting cosmopolitanism, and possibly planktonic larval dispersal.

    Fulltekst (pdf)
    fulltext
  • 243. Bingen, B.
    et al.
    Corfu, F.
    Stein, H.J.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    U-Pb geochronology of the syn-orogenic Knaben molybdenum deposits, Sveconorwegian orogen, Norway2015Inngår i: Geological Magazine, ISSN 0016-7568, E-ISSN 1469-5081, Vol. 152, s. 537-556Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Paired isotope dilution – thermal ionization mass spectrometry (ID-TIMS) and secondary ion mass spectrometry (SIMS) zircon U–Pb data elucidate geochronological relations in the historically important Knaben molybdenum mining district, Sveconorwegian Orogen, south Norway. This polyphase district provided c. 8.5 Mt of ore with a grade of 0.2%. It consists of mineralized quartz veins, silica-rich gneiss, pegmatites and aplites associated with a heterogeneous, locally sulphide-bearing, amphibolites facies gneiss called Knaben Gneiss, and hosted in a regional-scale monotonous, commonly weakly foliated, granitic gneiss. An augen gneiss at the Knaben I deposit yields a 1257±6 Ma magmatic zircon age, dating the pre-Sveconorwegian protolith of the Knaben Gneiss. Mineralized and non-mineralized granitic gneiss samples at the Knaben II and Kvina deposits contain some 1488–1164 Ma inherited zircon and yield consistent intrusion ages of 1032±4, 1034±6 and 1036±6 Ma. This age links magmatism in the district to the regional 1050–1020 Ma Sirdal I-type granite suite, corresponding to voluminous crustal melting during the Sveconorwegian orogeny. A high-U, low-Th/U zircon rim is present in all samples. It defines several age clusters between 1039±6 and 1009±7 Ma, peaking at c. 1016 Ma and overlapping with a monazite age of 1013±5 Ma. The rim records protracted hydrothermal activity, which started during the main magmatic event and outlasted it. This process was coeval with regional high-grade Sveconorwegian metamorphism. Molybdenum deposition probably started during this event when silica-rich mineralizing fluids or hydrous magmas were released from granite magma batches. An analogy between the Knaben district and shallow, short-lived porphyry Mo deposits is inappropriate.

  • 244. Bingen, B.
    et al.
    Solli, A.
    Viola, G.
    Torgersen, E.
    Sandstad, J.S.
    Whitehouse, Martin J.
    Naturhistoriska riksmuseet, Enheten för geovetenskap.
    Røhr, T.
    Ganerød, M.
    Nasuti, A.
    Geochronology of the Palaeoproterozoic Kautokeino Greenstone Belt, Finnmark, Norway: Tectonic implications in a Fennoscandia context.2015Inngår i: Norwegian Journal of Geology, Vol. 95, s. 365-396Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Zircon U–Pb geochronological data in 18 samples from Finnmarksvidda and one sample from the Repparfjord Tectonic Window, northern Norway, constrain the evolution of the Palaeoproterozoic Kautokeino Greenstone Belt and neighbouring units in a Fennoscandia context. The Jergul Complex is an Archaean cratonic block of Karelian affinity, made of variably gneissic, tonalite–trondhjemite–granodiorite–granite plutonic rocks formed between 2975 ± 10 and 2776 ± 6 Ma. It is associated with the Archaean Goldenvárri greenstone–schist formation. At the base of the Kautokeino Greenstone Belt, the Masi Formation is a typical Jatulian quartzite, hosting a Haaskalehto-type, albite–magnetite-rich, mafic sill dated at 2220 ± 7 Ma. The Likčá and Čáskejas formations represent the main event of basaltic magmatism. A synvolcanic metagabbro dates this magmatism at 2137 ± 5 Ma. The geochemical and Nd isotopic signature of the Čáskejas Formation (eNd = +2.2 ± 1.7) is remarkably similar to coeval dykes intruding the Archaean Karelian Craton in Finland and Russia (eNd = +2.5 ± 1.0). The Čáskejas Formation can be correlated with the Kvenvik Formation in the Alta–Kvænangen Tectonic Window. Two large granite plutons yield ages of 1888 ± 7 and 1865 ± 8 Ma, and provide a maximum age for shearing along two prominent NNW–SSE-oriented shear zones recording Svecokarelian transpression. The Bidjovagge Au–Cu deposit formed around 1886 to 1837 Ma and is also related to this NNW–SSE-oriented shear system. The Ráiseatnu Complex is mainly composed of granitic gneisses formed between 1868 ± 13 and 1828 ± 5 Ma, and containing metasediment rafts and zircon xenocrysts ranging from c. 3100 to 2437 Ma. The Kautokeino Greenstone Belt and Ráiseatnu Complex are interpreted as Palaeoproterozoic, pericontinental, lithospheric domains formed during rifting between Archaean cratonic domains. They accommodated oblique convergence between the Karelian and the Norrbotten Archaean cratons during the Svecokarelian orogeny.

    Fulltekst (pdf)
    fulltext
  • 245.
    Bisang, Irene
    Naturhistoriska riksmuseet, Enheten för botanik.
    ACTION NOW: Aufruf zu einer weltweit massiven Verstärkung der Anstrengungen gegen den Artenschwund2020Inngår i: Meylania, Vol. 65, s. 37-38Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 246.
    Bisang, Irene
    Naturhistoriska riksmuseet, Enheten för botanik.
    IUCN SSC Bryophyte Specialist Group, 2019 Report.2020Rapport (Annet vitenskapelig)
    Abstract [en]

    The mission of the IUCN SSC BryophyteSpecialist Group is to promote the explorationof bryological diversity across all geographicscales and its long-term conservation.

  • 247.
    Bisang, Irene
    Naturhistoriska riksmuseet, Enheten för botanik.
    Pleurozia gigantea. Global redlist assessment2019Inngår i: IUCN Red List of Threatened Species, s. e.T67369777A67369790-Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Pleurozia gigantea has a widespread distribution in the tropics, occurring in Africa, south and east Asia, and the Pacific Ocean region.Within its distribution range the species occurs in geographically isolated areas of hyper-oceanic or montane climate. Although the number of mature individuals is not known, it is very likely much higher than the thresholds for a threatened listing under criteria C and D. Globally, the population is likely to be declining, but probably not at a rate to qualify the species for listing as threatened.

  • 248.
    Bisang, Irene
    Naturhistoriska riksmuseet, Forskningsavdelningen centralt.
    SYNTHESYS offers access to European Natural History museums2014Inngår i: Gothenburg Systematikdagarna. Abstracts / [ed] Anonymous (ed), 2014Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    SYNTHESYS offers access to European Natural History museums.Twenty partner institutions from 12 European countries form SYNTHESYS, and offer coordinated access to their vast natural history collections and state-of-the art analytical facilities and qualified support from in-house researchers and curators. The institutions also co-operate in Network activities to improve the collections’ management, long-term preservation and accessibility. A Joint research activity develops tools to enhance the quality of and increase access to digitalized collections and data within Natural History institutions. SYNTHESYS was initiated by CETAF and receives funding by the European Union’s Research Framework Programs. It recently  secured EC funding for a third period (SYNTHESYS3 in FP7; Grant no. 312253), which started on 1st September 2013 and lasts for four years. Scientists in based in European member or associate states apply for grants covering research costs and subsistence at one or several partner institutions with a proposal that is assessed by a committee based on scientific quality.

  • 249.
    Bisang, Irene
    Naturhistoriska riksmuseet, Enheten för botanik.
    Upprop för att globalt massivt förstärka och effektivisera åtgärder för artbevarande2019Inngår i: Myrinia, ISSN 1102-4194, Vol. 29, s. 50-52Artikkel i tidsskrift (Annet (populærvitenskap, debatt, mm))
  • 250.
    Bisang, Irene
    et al.
    Naturhistoriska riksmuseet, Enheten för botanik.
    Bergamini, Ariel
    Agricultural intensification, sustainable farming and the fate of arable bryophytes in Switzerland2021Inngår i: The Changing Status of Arable Habitats in Europe / [ed] Hurford C., Wilson P., Storkey J., Cham, Switzerland: Springer, 2021, s. 139-156Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Land-use changes including agricultural intensification are major drivers of biodiversity loss. As other countries, Switzerland introduced agri-environment schemes (AES) to counteract declining agro-biodiversity. Among numerous bryophytes of the agricultural landscape, arable bryophytes have adapted to recurrent tillage. They are short-lived above-ground, while their diaspores may build up a persistent diaspore bank in the soil. We monitored the field hornwort and the Carolina hornwort, characteristic species of the Central European arable bryophyte flora over a period of almost three decades, and studied effects of Biodiversity Promoting Areas (BPAS), a key element of Swiss AES, on arable bryophyte diversity. Hornwort occurrences strongly declined, and stubble-fields left unprocessed until late autumn, the favourite habitat of arable specialist bryophytes, nearly disappeared from 1991 to 2018. The loss of suitable habitats follows from decreased cereal cultivation and direct post-harvest management. Different BPA-fallows, designed to promote birds, flowering plants, or ecosystem services, harboured arable bryophyte specialists, but their richness decreased with fallow age. Diaspore banks contained arable bryophyte specialists not occurring above-ground and may serve as a reservoir during unsuitable cultivation. Targeted modifications of current AES, aiming to maintain habitats favourable for arable bryophytes, are necessary to safeguard the typical arable bryophytes in the Swiss arable landscape.

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