Radiogenic isotopic signatures in the deep South Pacific during the Early and Middle Pliocene
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| Main Authors: | , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2024
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| _version_ | 1867168577832878080 |
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| author | Sutorius, Mika Struve, Torben Gutjahr, Marcus Lamy, Frank Winckler, Gisela Pahnke, Katharina |
| author_facet | Sutorius, Mika Struve, Torben Gutjahr, Marcus Lamy, Frank Winckler, Gisela Pahnke, Katharina |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The dataset contains Nd isotope signatures (expressed as εNd) and Pb isotopic ratios (206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) for IODP Expedition 383 Sites U1540 and U1541 measured in fish debris, foraminifera and bulk leachates. The data covers the Early and Middle Pliocene from 3.2 to 5.2 Ma BP. Additionally, lithogenic εNd, Pb isotopic ratios (206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb), and Sr isotopic ratio (87Sr/86Sr) for the sortable silt fraction (<63 µm) for U1540 and U1541 are included. The obtained South Pacific εNd (authigenic) values for the Pliocene cover a range from εNd= -7.5 to -5.5 and with it are consistently more radiogenic than presently implying a changed deep water mass exchange. The authigenic Pb isotopic signatures lie in a range between 206Pb/204Pb=18.76 to 18.79 207Pb/204Pb=15.64 to 15.66 and 208Pb/204Pb= 38.70 to 38.78 and indicate changes in weathering input to the South Pacific. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_973001 |
| institution | PANGAEA |
| language | en |
| publishDate | 2024 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Radiogenic isotopic signatures in the deep South Pacific during the Early and Middle Pliocene Sutorius, Mika Struve, Torben Gutjahr, Marcus Lamy, Frank Winckler, Gisela Pahnke, Katharina Authigenic Pb and Nd; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Nd isotope composition; Pb isotopes; Pliocene Paleoceanography; South Pacific The dataset contains Nd isotope signatures (expressed as εNd) and Pb isotopic ratios (206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb) for IODP Expedition 383 Sites U1540 and U1541 measured in fish debris, foraminifera and bulk leachates. The data covers the Early and Middle Pliocene from 3.2 to 5.2 Ma BP. Additionally, lithogenic εNd, Pb isotopic ratios (206Pb/204Pb, 207Pb/204Pb, 208Pb/204Pb), and Sr isotopic ratio (87Sr/86Sr) for the sortable silt fraction (<63 µm) for U1540 and U1541 are included. The obtained South Pacific εNd (authigenic) values for the Pliocene cover a range from εNd= -7.5 to -5.5 and with it are consistently more radiogenic than presently implying a changed deep water mass exchange. The authigenic Pb isotopic signatures lie in a range between 206Pb/204Pb=18.76 to 18.79 207Pb/204Pb=15.64 to 15.66 and 208Pb/204Pb= 38.70 to 38.78 and indicate changes in weathering input to the South Pacific. |
| title | Radiogenic isotopic signatures in the deep South Pacific during the Early and Middle Pliocene |
| topic | Authigenic Pb and Nd; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Nd isotope composition; Pb isotopes; Pliocene Paleoceanography; South Pacific |
| url | https://doi.org/10.1594/PANGAEA.973001 |