Laguna Potrok Aike, Argentina Stage 3 Sediment Data Haberzettl, T.; Ohlendorf, C.; Zolitschka, B. Haberzettl, T. Ohlendorf, C. Zolitschka, B. PAGES 2k Network PAGES LOTRED SA2k earth science/paleoclimate/paleolimnology (depth,null,null,centimeter,null,paleolimnology,averaged,null,N,null) earth science/paleoclimate/paleolimnology (vanadium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (copper,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (nitrogen,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (sulfur,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (strontium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (zinc,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (inorganic carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (lead,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (iron/manganese,sediment,null,dimensionless,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (titanium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (iron,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (nickel,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (water content,sediment,null,percent,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (calcium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (chromium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null) earth science/paleoclimate/paleolimnology (volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-6 units) earth science/paleoclimate/paleolimnology (magnetic susceptibility,sediment,null,percent,null,paleolimnology,null,null,N,frequency-dependent magnetic susceptibility) earth science/paleoclimate/paleolimnology (carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,elemental analysis,N,total organic carbon/total nitrogen) earth science/paleoclimate/paleolimnology (cobalt,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (potassium,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (organic carbon,sediment,null,percent,null,paleolimnology,null,elemental analysis,N,null) earth science/paleoclimate/paleolimnology (manganese,sediment,null,count per second,null,paleolimnology,null,energy-dispersive x-ray fluorescence spectroscopy,N,null) earth science/paleoclimate/paleolimnology (Laguna Potrok Aike>LATITUDE -51.95>LONGITUDE -70.3833) Seismic reflection studies in the maar lake Laguna Potrok Aike (51°58' S, 70°23' W) revealed an erosional unconformity associated with a sub-aquatic lake-level terrace at a water depth of 30m. Radiocarbon-dated, multi-proxy sediment studies of a piston core from this location indicate that the sediment below this discontinuity has an age of 45kyr BP (Oxygen Isotope Stage 3), and was deposited during an interval of high lake level. In comparison to the Holocene section, geochemical indicators of this older part of the record either point towards a different sediment source or to a different transport mechanism for Oxygen Isotope Stage 3 sediments. Holocene sedimentation started again before 6790cal. yr BP, providing a sediment record of hydrological variability until the present. Geochemical and isotopic data indicate a fluctuating lake level until 5310cal. yr BP. During the late Holocene the lake level shows a receding tendency. Nevertheless, the lake level did not drop below the 30m terrace to create another unconformity. The geochemical characterization of volcanic ashes reveals evidence for previously unknown explosive activity of the Reclús and Mt. Burney volcanoes during Oxygen Isotope Stage 3. STUDY NOTES: Multiproxy record from a submerged lake level terrace (30-35 m below present lake level) with a hiatus that ended around 7000 cal. BP and which is indicative for a major drought. The duration of the hiatus is unknown up to now. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Haberzettl, T. Investigator : Ohlendorf, C. Investigator : Zolitschka, B. 2008-01-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6065 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.xls https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.xls English https://www.ncdc.noaa.gov/paleo/study/6065 https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/southamerica/argentina/potrok2008.xls Torsten Haberzettl, Barbara Kück, Sabine Wulf, Flavio Anselmetti, Daniel Ariztegui, Hugo Corbella, Michael Fey, Stephanie Janssen, Andreas Lücke, Christoph Mayr, Christian Ohlendorf, Frank Schäbitz, Gerhard H. Schleser, Michael Wille, Bernd Zolitschka2008Hydrological variability in southeastern Patagonia and explosive volcanic activity in the southern Andean Cordillera during Oxygen Isotope Stage 3 and the Holocene inferred from lake sediments of Laguna Potrok Aike, ArgentinaPalaeogeography, Palaeoclimatology, Palaeoecology2592-3213-22910.1016/j.palaeo.2007.10.008http://www.sciencedirect.com/science/article/pii/S0031018207005111 START YEAR: 44800 cal yr BP * END YEAR: -48 cal yr BP -70.3833 -51.95 -70.3833 -51.95