Sedimentology and geochemistry of Oxygen Isotope Stage 3 and Holocene sediments from Laguna Potrok Aike, Patagonia
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2007
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| _version_ | 1867168551247282176 |
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| author | Haberzettl, Torsten Kück, Barbara Wulf, Sabine Anselmetti, Flavio S Ariztegui, Daniel Corbella, Hugo Fey, Michael Janssen, Stephanie Lücke, Andreas Mayr, Christoph Ohlendorf, Christian Schäbitz, Frank Schleser, Gerhard Hans Wille, Michael Zolitschka, Bernd |
| author_facet | Haberzettl, Torsten Kück, Barbara Wulf, Sabine Anselmetti, Flavio S Ariztegui, Daniel Corbella, Hugo Fey, Michael Janssen, Stephanie Lücke, Andreas Mayr, Christoph Ohlendorf, Christian Schäbitz, Frank Schleser, Gerhard Hans Wille, Michael Zolitschka, Bernd |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_672052 |
| institution | PANGAEA |
| language | en |
| publishDate | 2007 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Sedimentology and geochemistry of Oxygen Isotope Stage 3 and Holocene sediments from Laguna Potrok Aike, Patagonia Haberzettl, Torsten Kück, Barbara Wulf, Sabine Anselmetti, Flavio S Ariztegui, Daniel Corbella, Hugo Fey, Michael Janssen, Stephanie Lücke, Andreas Mayr, Christoph Ohlendorf, Christian Schäbitz, Frank Schleser, Gerhard Hans Wille, Michael Zolitschka, Bernd Laguna Potrok Aike, Patagonia; PC; Piston corer; PTA03-06 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. |
| title | Sedimentology and geochemistry of Oxygen Isotope Stage 3 and Holocene sediments from Laguna Potrok Aike, Patagonia |
| topic | Laguna Potrok Aike, Patagonia; PC; Piston corer; PTA03-06 |
| url | https://doi.org/10.1594/PANGAEA.672052 |