Change search
Refine search result
1 - 11 of 11
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Armands, Gösta
    et al.
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Johansson, Åke
    Swedish Museum of Natural History, Department of Geology.
    Lundqvist, Thomas
    En pionjär inom svensk isotopgeologi. In memoriam, Eric Welin, 1923-20142015In: Geologiskt forum, Vol. 22, no 85, p. 26-27Article in journal (Other (popular science, discussion, etc.))
  • 2.
    Claesson, Stefan
    et al.
    Swedish Museum of Natural History, Department of Geology.
    Bibikova, Elena
    Vernadsky Institute of Geochemistry and Analytical Chemistry RAS, Kosygin St 19, 119991 Moscow, Russia.
    Shumlyanskyy, Leonid
    M. P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation, Palladina Ave. 34, 03142 Kyiv, Ukraine.
    Dhuime, Bruno
    Department of Earth and Environmental Sciences, University of St Andrews, North Streeet, St Andrews KYI6 9AL, UK.
    Hawkesworth, C. H.
    Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8, 1RJ, UK.
    The oldest crust in the Ukrainian Shield - Eoarchaean U-Pb ages and Hf-Nd constraints from enderbites and metasediments2014In: Continent Formation Through Time / [ed] Roberts, N. M. W., van Kranendonk, M., Parman, S., Shirey, S. and Clift, P. D., London: The Geological Society Publishing House, 2014, Vol. 389Chapter in book (Refereed)
    Abstract [en]

    The oldest crust in the Ukrainian Shield occurs in the Podolian and Azov domains which both include Eoarchaeanarchaean components. U-Pb age data for Dniestr-Bug enderbites, Podolian Domain, indicate these are ca. 3.75 Ga old, and Lu-Hf isotope date indicate extraction from chondritic to mildly isotopically depleted sources with εHf up to ca. +2. Nd model ages support their Eoarchaeanarchaean age, while model ages for Dniestr-Bug metasedimentary gneisses indicate that these also include younger crustal material. Most of the Hf-age data for metasedimentary zircon from the Soroki greenstone belt, Azov Domain, reflects Eoarchaeanarchaean primary crustal sources with chondritic to mildly depleted Hf isotope signatures at 3.75 Ga. A minor portion is derived from Mesoarchaeanarchaean crust with a depleted εHf signature of ca. +4 at 3.1 Ga. U-Pb zircon ages from Fedorivka greenstone belt metasediments are consistent with the Soroki age data, but also include a 2.7‒2.9 Ga component. Nd whole rock model ages provide support for a younger crustal component in the latter. Both domains have been subject to Neoarchaeanarchaean, ca. 2.8 Ga, and Palaeoproterozoic, ca. 2.0 Ga metamorphism. The spatial distribution indicates that the Podolian and Azov domains have evolved independently of each other before the amalgamation of the Ukrainian Shield.

    Download full text (pdf)
    Claesson 2014 JGS Eoarchean Ukrainian Shield
  • 3.
    Claesson, Stefan
    et al.
    Swedish Museum of Natural History, Department of Geology.
    Bibikova, Elena V.
    Vernadsky Institute of Geochemistry and Analytical Chemistry, R.A.S., Moscow, Russia.
    Shumlyanskyy, Leonid
    M.P Semenenko Institute of Geochemistry, Mineralogy and Ore Formation, Palladina Ave. 34, 03680 Kyiv, Ukraine.
    Whitehouse, Martin J.
    Swedish Museum of Natural History, Department of Geology.
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    Can oxygen isotopes in magmatic zircon be modified by metamorphism? A case study from the Eoarchean Dniester-Bug Series, Ukrainian Shield2016In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 273, p. 1-11Article in journal (Refereed)
    Download full text (pdf)
    Claesson O Odesa PRECAM text and figures accepted 151108
  • 4. Kornprobst, Jacques
    et al.
    Abalos, Benito
    Barbey, Pierre
    Boullier, Anne-Marie
    Burg, Jean-Pierre
    Capdevila, Ramon
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Cordani, Umberto
    Corrigan, David
    Gabrielsen, Roy H
    Gil-Ibarguchi, José I
    Johansson, Åke
    Swedish Museum of Natural History, Department of Geology.
    Letsch, Dominik
    Le Vigouroux, Phillipe
    Upton, Brian
    Boris Choubert: Unrecognized visionarygeologist, pioneer of the global tectonics.2018In: BSGF - Earth Science Bulletin, Vol. 189, no 2, p. 1-15, article id 7Article in journal (Refereed)
    Abstract [en]

    This work is a review of Boris Choubert’s paper (1935), which was published in French under the rather devalorizing title: “Research on the Genesis of Palaeozoic and Precambrian Belts.” Despite its innovative content, this article had no impact either at the time of its publication or even later. It begins with the construction of a remarkable fit of the circum-Atlantic continents. This was based on the 1.000 meters isobath instead of the shoreline. Thirty years before Bullard et al. (1965), it demonstrated in an indisputable way the reality of the continents motion on the surface of the Earth. Therefore, Choubert designated Wegener’s “continental drift” as the main cause of tectonics. Even going beyond Wegener’s theory, he argued that this mechanism was efficient well before the formation of the Triassic Pangæa, during the whole Palaeozoic to result in the building of the Caledonian and Hercynian mountains. Although he was still encumbered by the vocabulary of the time regarding geosynclines, Boris Choubert described tectonics based on the horizontal mobility of the Precambrian continental blocks. Oddly enough, he did not apply this model to the Precambrian structures, which he attributed to the effects of the Earth’s rotation on the continental crust during its solidification. At the time of its publication, this paper was a very important step towards understanding global tectonics. Unfortunately, Choubert’s contemporaries did not generally recognize its significance.

  • 5.
    Kumpulainen, Risto A.
    et al.
    Stockholms universitet.
    Bergman, Stefan
    Sveriges geologiska undersökning.
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Sweden to review its geological nomenclatureArticle in journal (Refereed)
    Abstract [en]

    All geoscientists working with the geology of Sweden are invited to join a common effort to review Swedish geological nomenclature and the naming of geological units and other features. A new guide, the Guide for geological nomenclature in Sweden, provides advice for this review process. The Geological Survey of Sweden will set up a new open and freely accessible database for geological names, and a dedicated name committee with mandate to formally approve proposed names will supervise the naming process. The success of this vital long-term commitment will depend on active participation of the geoscientific community at large.

  • 6. Palkopoulou, Eleftheria
    et al.
    Lipson, Mark
    Mallick, Swapan
    Nielsen, Svend
    Rohland, Nadin
    Baleka, Sina
    Karpinski, Emil
    Ivancevici, Atma M.
    To, Thu-Hien
    Kortschak, Daniel
    Raison, Joy M.
    Qu, Zhipeng
    Chin, Tat-Jun
    Alt, Kurt W.
    Claesson, Stefan
    Dalén, Love
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    MacPhee, Ross D. E.
    Meller, Harald
    Rocar, Alfred L.
    Ryder, Oliver A.
    Heiman, David
    Young, Sarah
    Breen, Matthew
    Williams, Christina
    Aken, Bronwen L.
    Ruffier, Magali
    Karlsson, Elinor
    Johnson, Jeremy
    Di Palma, Federica
    Alfoldi, Jessica
    Adelsoni, David L.
    Mailund, Thomas
    Munch, Kasper
    Lindblad-Toh, Kerstin
    Hofreiter, Michael
    Poinar, Hendrik
    Reich, David
    A comprehensive genomic history of extinct and living elephants2018In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 115, no 11, p. E2566-E2574Article in journal (Refereed)
  • 7. Shumlyanskyy, Leonid
    et al.
    Hawkesworth, Chris
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    Bogdanova, Svetlana
    Mytrokhyn, Oleksandr
    Romer, Rolf
    Dhuime, Bruno
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Ernst, Richard
    Whitehouse, Martin
    Swedish Museum of Natural History, Department of Geology.
    Bilan, Olena
    The origin of the Palaeoproterozoic AMCG complexes in the Ukrainian shield: New U-Pb ages and Hf isotopes in zircon2017In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 292, p. 216-239Article in journal (Refereed)
  • 8. Shumlyanskyy, Leonid
    et al.
    Hawkesworth, Chris
    Dhuime, Bruno
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    Claesson, Stefan
    Storey, Craig
    207Pb/206Pb ages and Hf isotope compositions of zircons from sedimentary rocks of the Ukrainian shield: Crustal growth of the south-western part of the East European craton from Archaean to Neoproterozoic2015In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 260, p. 39-54Article in journal (Refereed)
  • 9. Shumlyanskyy, Leonid
    et al.
    Wilde, Simon
    Nemchin, Alexander
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    Baginski, Boguslaw
    Eoarchean rock association in the Dniester-Bouh Domain of the Ukrainian Shield: A suite of LILE-depleted enderbites and mafic granulites2020In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433Article in journal (Refereed)
    Abstract [en]

    We present the results of a study of an Eoarchean rock assemblage in the Dniester-Bouh Domain of the Ukrainian Shield. This comprises granulite-facies granitoids intercalated with mafic and ultramafic granulites. Zircon U-Pb geochronology indicates enderbite crystallisation at 3786 ± 32 Ma, followed by a subsequent event at ca. 3500 Ma. Several events can be tentatively identified that affected these rocks between ca. 3000 and 2700 Ma. The last zircon growth event took place in response to granulite facies metamorphism and included two separate episodes at ca. 2000 and ca. 1900 Ma. The oldest two zircon populations in enderbites have εHf values around 0, indicating their crystallisation from a protolith with a short crustal residence time. Zircons that crystallised during the 3000–2700 Ma event(s) vary in Hf isotope systematics from εHf ~ 1 at ca. 3000 Ma to εHf ~ −14 at c. 2700 Ma. Paleoproterozoic zircons reveal even more significant variations in εHf value from +6 to –22. Such variations are indicative of juvenile input and mixing with old non-radiogenic Hf.

    All Eoarchean rocks are depleted in incompatible trace elements and have negative Ta-Nb, P, and Ti anomalies. Compared to the typical TTG associations, enderbites record depletion in felsic components (SiO2, Na2O, K2O, Rb, Th), and enrichment in mafic ones (TiO2, MgO, CaO, V), allowing them to be defined as “mafic” or “depleted” TTG.

    Geochemical data indicate that mafic and ultramafic rocks of the Dniester-Bouh Domain formed by shallow high-degree melting of the mantle, with the absence of garnet in their source, and the presence of residual Ti-bearing minerals and/or amphibole. In contrast, enderbites were formed from a mixed garnet-bearing amphibolite – eclogite source, i.e. melting over a range of pressures/depths. Our preferred model for the formation of the Eoarchean rock association involves the shallow melting of mantle and formation of basalts and accompanying ultramafic cumulates at a spreading centre, with subsequent underthrusting of one segment of oceanic crust beneath the other, and partial melting of hydrated metamorphosed (eclogitized) mafic rocks in the underthrust plate, leading to the formation of the TTG melts

  • 10. Sundblad, Krister
    et al.
    Salin, Evgenia
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Gyllencreutz, Richard
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia2021In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433Article in journal (Refereed)
  • 11. Sundblad, Krister
    et al.
    Salin, Evgenia
    Claesson, Stefan
    Swedish Museum of Natural History, Department of Geology.
    Gyllencreutz, Richard
    Billström, Kjell
    Swedish Museum of Natural History, Department of Geology.
    The Precambrian of Gotland, a key for understanding the Proterozoic evolution in southern Fennoscandia2021In: Precambrian Research, ISSN 0301-9268, E-ISSN 1872-7433, Vol. 363, p. 106321-106321, article id 106321Article in journal (Refereed)
1 - 11 of 11
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf