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  • 1.
    Delmonte, B
    et al.
    University Milano-Bicocca, Milano, Italy.
    Paleari, C. I.
    University Milano-Bicocca, Milano, Italy.
    Andò, S
    University Milano-Bicocca, Milano, Italy.
    Garzantini, E
    University Milano-Bicocca, Milano, Italy.
    Andersson, Per Sune
    Swedish Museum of Natural History, Department of Geology.
    Petit, J.R.
    University of Grenobles, Grenoble, France.
    Crosta, X
    Unversity of Bordeaux, St Hilaire, France.
    Narcisi, B
    ENEA, Rome, Italy.
    Baroni, C
    University of Pisa, Pisa, Italy.
    Salvatore, M.C.
    University of Pisa, Pisa, Italy.
    Baccolo, G.
    University Milano-Bicocca, Milano, Italy.
    Maggi, Valter
    University Milano-Bicocca, Milano, Italy.
    Causes of dust size variability in central East Antarctica (Dome B):Atmospheric transport from expanded South American sources during Marine Isotope Stage 22017In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 168, p. 55-68Article in journal (Refereed)
    Abstract [en]

    We here investigate the spatial and temporal variability of eolian dust particle sorting recorded in the Dome B (77 05 S, 94 55 E) ice core, central East Antarctica, during Marine Isotope Stage (MIS) 2. We address the question whether such changes reflect variable transport pathways from a unique source area or rather a variable apportionment from diverse Southern Hemisphere sources transported at different elevation in the troposphere. The Sr-Nd radiogenic isotope composition of glacial dust samples as well as single-particle Raman mineralogy support the hypothesis of a single dust provenance both for coarse and fine mode dust events at Dome B. The southern South American provenance of glacial dust in Antarctica deduced from these results indicate a dust composition coherent with a mixture of volcanic material and minerals derived from metamorphic and plutonic rocks. Additionally, Dome B glacial samples contain aragonite particles along with diatom valves of marine benthic/epiphytic species and freshwater species living today in the northern Antarctic Peninsula and southern South America. These data suggest contribution from the exposed Patagonian continental shelf and glacial outwash plains of southern Patagonia at the time when sea level reached its minimum. Our results confirm that dust sorting is controlled by the relative intensity of the two main patterns of tropospheric dust transport onto the inner Plateau, i.e. fast low-level advection and long-range high-altitude transport including air subsidence over Antarctica.

  • 2. Urena, I.
    et al.
    Ersmark, E.
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Samaniego, J. A.
    Galindo-Pellicena, M. A.
    Cregut-Bonnoure, E.
    Bolivar, H.
    Gomez-Olivencia, A.
    Rios-Garaizar, J.
    Garate, D.
    Dalén, L.
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Arsuaga, J. L.
    Valdiosera, C. E.
    Unraveling the genetic history of the European wild goats2018In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 185, p. 189-198Article in journal (Refereed)
  • 3. Villavicencio, Natalia
    et al.
    Werdelin, Lars
    Swedish Museum of Natural History, Department of Paleobiology.
    The Casa del Diablo cave (Puno, Peru) and the late Pleistocene demise of megafauna in the Andean Altiplano2018In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 195, p. 21-31Article in journal (Refereed)
    Abstract [en]

    During the Late Quaternary Extinction event South America lost ~83% of all its late Pleistocene megafaunal genera. As in other regions of the world, the debate about the possible drivers behind these extinctions revolves around the role of humans arriving into the continent and on the effect of the climatic changes characteristic of the Pleistocene-Holocene transition. The availability of precise chronological information, in order to estimate the timing of extinction of the different taxa affected, is critical for solving such debate. Here we present an updated study of the late Pleistocene mammalian deposits from Casa del Diablo Cave (CdD) in the Altiplano of Peru. The study includes an updated list of the mammalian faunas found in the cave and 11 taxon-specific XAD radiocarbon dates from extinct and extant megafauna bones.We compare this new chronology to the timing of major environmental changes and human arrival in the area, as well as with other megafaunal discoveries from the high Andes. The radiocarbon dates from CdD fall in the time window between 23 and 12.8 cal kyr BP. Compared to other records of extinct megafauna in the high Andes, the one from CdD presents in general younger occurrences. No temporal overlap between humans and extinct megafauna emerges from comparing first dates of appearance of humans in the Altiplano, and last appearance dates of extinct megafauna from CdD. However, the possibility of temporal overlap among the records becomes evident when we compare confidence intervals calculated to estimate true times of human arrival and megafaunal local extinctions.

  • 4. Workman, C.
    et al.
    Dalen, L.
    Vartanyan, S.
    Shapiro, B.
    Kosintsev, P.
    Sher, A.
    Gotherstrom, A.
    Barnes, I.
    Population-level genotyping of coat colour polymorphism in woolly mammoth (Mammuthus primigenius)2011In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 30, no 17-18, p. 2304-2308Article in journal (Refereed)
  • 5. Workman, Claire
    et al.
    Dalen, Love
    Vartanyan, Sergey
    Shapiro, Beth
    Kosintsev, Pavel
    Sher, Andrei
    Gotherstrom, Anders
    Barnes, Ian
    Population-level genotyping of coat colour polymorphism in woolly mammoth (Mammuthus primigenius)2011In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 30, no 17-18, p. 2304-2308Article in journal (Refereed)
  • 6. Zale, R.
    et al.
    Huang, Y. -T
    Bigler, C.
    Wood, J. R.
    Dalén, L.
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Wang, X. -R
    Segerstrom, U.
    Klaminder, J.
    Growth of plants on the Late Weichselian ice-sheet during Greenland interstadial-1?2018In: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 185, p. 222-229Article in journal (Refereed)
1 - 6 of 6
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