Age-depth relation, radiocarbon ages and tephra geochemistry of core 5022-2CP from Laguna Potrok Aike, southern Patagonia
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| Main Authors: | , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2013
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| _version_ | 1867167669739847680 |
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| author | Kliem, Pierre Enters, Dirk Hahn, Annette Ohlendorf, Christian Lisé-Pronovost, Agathe St-Onge, Guillaume Wastegård, Stefan Zolitschka, Bernd PASADO Science Team |
| author_facet | Kliem, Pierre Enters, Dirk Hahn, Annette Ohlendorf, Christian Lisé-Pronovost, Agathe St-Onge, Guillaume Wastegård, Stefan Zolitschka, Bernd PASADO Science Team |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The 106 m long composite profile from site 2 of ICDP expedition 5022 (PASADO) at Laguna Potrok Aike documents a distinct change in sedimentation patterns from pelagic sediments at the top to dominating mass movement deposits at its base. The main lithological units correspond to the Holocene, to the Lateglacial and to the last glacial period and can be interpreted as the result of distinct environmental variations. Overflow conditions might have been achieved during the last glacial period, while signs of desiccation are absent in the studied sediment record. Altogether, 58 radiocarbon dates were used to establish a consistent age-depth model by applying the mixed-effect regression procedure which results in a basal age of 51.2 cal. ka BP. Radiocarbon dates show a considerable increase in scatter with depth which is related to the high amount of reworking. Validation of the obtained chronology was achieved with geomagnetic relative paleointensity data and tephra correlation. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_808190 |
| institution | PANGAEA |
| language | en |
| publishDate | 2013 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age-depth relation, radiocarbon ages and tephra geochemistry of core 5022-2CP from Laguna Potrok Aike, southern Patagonia Kliem, Pierre Enters, Dirk Hahn, Annette Ohlendorf, Christian Lisé-Pronovost, Agathe St-Onge, Guillaume Wastegård, Stefan Zolitschka, Bernd PASADO Science Team 5022-2CP; COMPCORE; Composite Core; Laguna Potrok Aike, Patagonia; PASADO; Potrok Aike Maar Lake Sediment Archive Drilling Project The 106 m long composite profile from site 2 of ICDP expedition 5022 (PASADO) at Laguna Potrok Aike documents a distinct change in sedimentation patterns from pelagic sediments at the top to dominating mass movement deposits at its base. The main lithological units correspond to the Holocene, to the Lateglacial and to the last glacial period and can be interpreted as the result of distinct environmental variations. Overflow conditions might have been achieved during the last glacial period, while signs of desiccation are absent in the studied sediment record. Altogether, 58 radiocarbon dates were used to establish a consistent age-depth model by applying the mixed-effect regression procedure which results in a basal age of 51.2 cal. ka BP. Radiocarbon dates show a considerable increase in scatter with depth which is related to the high amount of reworking. Validation of the obtained chronology was achieved with geomagnetic relative paleointensity data and tephra correlation. |
| title | Age-depth relation, radiocarbon ages and tephra geochemistry of core 5022-2CP from Laguna Potrok Aike, southern Patagonia |
| topic | 5022-2CP; COMPCORE; Composite Core; Laguna Potrok Aike, Patagonia; PASADO; Potrok Aike Maar Lake Sediment Archive Drilling Project |
| url | https://doi.org/10.1594/PANGAEA.808190 |