Benthic and planktic oxygen and carbon isotopes, alkenone, pollen, and XRF data at IODP 339-U1385 for MIS 34-35 and MIS 42-43 southern Portuguese Margin
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| Main Authors: | , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2023
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| _version_ | 1867171377610489856 |
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| author | Margari, Vasiliki Hodell, David A Grimalt, Joan O Tzedakis, Polychronis C |
| author_facet | Margari, Vasiliki Hodell, David A Grimalt, Joan O Tzedakis, Polychronis C |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We report analyses of marine and terrestrial proxies from IODP Site 339-U1385 on the southern Portuguese Margin. We focus on two time-windows, representing distinct climatic contexts: one from the Early Pleistocene interval of 41-kyr glacial cycles (1335-1385 ka) and one from the Early–Middle Pleistocene Transition (~1110-1200 ka). Analyses were undertaken with respect to (i) oxygen isotopic composition of planktic and benthic foraminifera, reflecting changes in surface-water conditions, and global ice-volume and deep-water hydrography, respectively; (ii) the relative composition of C37 unsaturated alkenones, reflecting surface-water conditions; (iii) pollen content, providing an integrated picture of regional vegetation changes in southwestern Portugal; and (iv) X-ray fluorescence (XRF) sediment composition changes, reflecting variations in the relative proportion of detrital (Zr) and biogenic (Sr) sediment supply. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_961070 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Benthic and planktic oxygen and carbon isotopes, alkenone, pollen, and XRF data at IODP 339-U1385 for MIS 34-35 and MIS 42-43 southern Portuguese Margin Margari, Vasiliki Hodell, David A Grimalt, Joan O Tzedakis, Polychronis C Alkenones; Benthic and planktonic foraminifera; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP 339-U1385; Oxygen and carbon stable isotopes; Pollen; XRF core scanner data We report analyses of marine and terrestrial proxies from IODP Site 339-U1385 on the southern Portuguese Margin. We focus on two time-windows, representing distinct climatic contexts: one from the Early Pleistocene interval of 41-kyr glacial cycles (1335-1385 ka) and one from the Early–Middle Pleistocene Transition (~1110-1200 ka). Analyses were undertaken with respect to (i) oxygen isotopic composition of planktic and benthic foraminifera, reflecting changes in surface-water conditions, and global ice-volume and deep-water hydrography, respectively; (ii) the relative composition of C37 unsaturated alkenones, reflecting surface-water conditions; (iii) pollen content, providing an integrated picture of regional vegetation changes in southwestern Portugal; and (iv) X-ray fluorescence (XRF) sediment composition changes, reflecting variations in the relative proportion of detrital (Zr) and biogenic (Sr) sediment supply. |
| title | Benthic and planktic oxygen and carbon isotopes, alkenone, pollen, and XRF data at IODP 339-U1385 for MIS 34-35 and MIS 42-43 southern Portuguese Margin |
| topic | Alkenones; Benthic and planktonic foraminifera; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP 339-U1385; Oxygen and carbon stable isotopes; Pollen; XRF core scanner data |
| url | https://doi.org/10.1594/PANGAEA.961070 |