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@ARTICLE{Haberzettl:8983,
      author       = {Haberzettl, T. and Anselmetti, F.S. and Bowen, S.W. and
                      Fey, M. and Mayr, C. and Zolitschka, B. and Ariztegui, D.
                      and Mauz, B. and Ohlendorf, C. and Kastner, S. and Lücke,
                      A. and Schäbitz, F. and Wille, M.},
      title        = {{L}ate {P}leistocene dust deposition in the {P}atagonian
                      steppe; extending and refining the paleoenvironmental and
                      ephrochronological record from {L}aguna {P}otrok {A}ike back
                      to 55 ka},
      journal      = {Quaternary science reviews},
      volume       = {28},
      issn         = {0277-3791},
      address      = {Amsterdam [u.a.]},
      publisher    = {Elsevier},
      reportid     = {PreJuSER-8983},
      year         = {2009},
      note         = {We thank Regine Rothlisberger for providing us with her
                      non-sea-salt calcium data from Dome C. Sabine Stahl and
                      Ellen Reid are acknowledged for assistance with geochemical
                      and tephra analyses as well as Guillaume St-Onge for
                      comments on parts of an earlier draft of this manuscript.
                      Raimon Tolosana-Delgado, Hilmar von Eynatten, Hans Ruppert,
                      Istvan Dunkl and Volker Karius provided fruitful
                      discussions. We also acknowledge the helping hands of
                      Philipp Bluszcz during core processing. Finally, we would
                      like to thank Barbara Delmonte and an anonymous reviewer for
                      their substantial comments which improved an earlier version
                      of the manuscript distinctively. This is a contribution to
                      the German Climate Research Program DEKLIM (grants 01 LD
                      0034 and 0035) of the German Federal Ministry of Education
                      and Research (BMBF). Seismic surveys were funded by the
                      German Research Foundation (DFG Zo102/5-1, 2, 3) in the
                      framework of the priority program ICDP, Torsten Haberzettl
                      is currently supported by a postdoctoral fellowship
                      scholarship provided by Le Fonds quebecois de la recherche
                      Sur la nature et les technologies (FQRNT). This constitutes
                      GEOTOP contribution n degrees 2009-0017.},
      abstract     = {Paleoenvironmental records extending well into the last
                      glacial period are scarce in the steppe regions of southern
                      South America. Here, we present a continuous record for the
                      past 55 ka from the maar lake Laguna Potrok Aike (51 degrees
                      58' S. 70 degrees 23' W, southern Patagonia, Argentina).
                      Previous studies on a sedimentary core from a lake level
                      terrace near the northern margin of the lake covered parts
                      of Oxygen Isotope Stage (OIS) 3 (59-29 ka) whereas a second
                      core from the centre of the basin comprised the last 16 ka.
                      Tephrostratigraphical constraints and OSL ages from a third
                      core located below the lake level terrace provide the
                      crucial piece to close the gap between the previous coring
                      sites. High-resolution XRF and magnetic susceptibility as
                      well as grain size data indicate a positive hydrological
                      balance alongside with relatively high aeolian activity
                      during the glacial which is contemporaneous with increased
                      dust fluxes in Antarctica. This is therefore the first
                      evidence for contemporaneity of aeolian deposition in both
                      the target area (Antarctica) and in the major source area of
                      Patagonia. During the Holocene climatic conditions driving
                      sediment deposition seem to have been more variable and less
                      dominated by wind compared to glacial times. The
                      identification of a minor lake level lowering at
                      approximately 4 cal ka BP allows to refine earlier
                      paleoenvironmental reconstructions for the Holocene. Within
                      error margins the OSL ages are consistent with published
                      radiocarbon-dated records offering hence a valuable tool for
                      further studies of the sediments from Laguna Potrok Aike.
                      The new chronology confirms the age of three tephra layers
                      up to now only found in Laguna Potrok Aike sediments and
                      ascribed to OIS 3. (C) 2009 Elsevier Ltd. All rights
                      reserved.},
      keywords     = {J (WoSType)},
      cin          = {ICG-4},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB793},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Geography, Physical / Geosciences, Multidisciplinary},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000271872200027},
      doi          = {10.1016/j.quascirev.2009.07.021},
      url          = {https://juser.fz-juelich.de/record/8983},
}