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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2012
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| Online Access: | https://doi.org/10.1594/PANGAEA.780003 |
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| _version_ | 1867168104932442112 |
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| author | Naafs, Bernhard David A Hefter, Jens Stein, Ruediger |
| author_facet | Naafs, Bernhard David A Hefter, Jens Stein, Ruediger |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Recently, a new organic geochemical paleothermometer based on the relative abundance of long chain alkyl 1,13- and 1,15-diols, the so-called long chain diol index (LDI), was proposed. Because of its novelty, the proxy has not been reported for sediments older than 43 ka. We therefore determined the LDI for 14 sediment samples from the early Pleistocene between 2.49 and 2.41 Ma, comprising Marine Isotope Stage (MIS) 98 to 95, and converted the values to sea surface temperature (SST) estimates to test whether the LDI could be applied or not to the early Quaternary. We show that the long chain diols can be preserved in marine sediments from the early Pleistocene, although at our study site this is limited to periods of increased biomarker accumulation (glacials). Although the results are based on a limited time interval and number of samples, the similarity between LDI-based SST and alkenone-based SST from the same samples suggests that the LDI proxy may have potential for studies covering the entire Quaternary. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_780003 |
| institution | PANGAEA |
| language | en |
| publishDate | 2012 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Long chain diol index and paleotemperature reconstruction for IODP Hole 306-U1313C Naafs, Bernhard David A Hefter, Jens Stein, Ruediger 306-U1313C; AGE; DEPTH, sediment/rock; Diols; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp306; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Long chain diol index; North Atlantic Climate 2; Sample code/label; Sample ID; Sea surface temperature, annual mean; SST, from long chain diol index (LDI) Recently, a new organic geochemical paleothermometer based on the relative abundance of long chain alkyl 1,13- and 1,15-diols, the so-called long chain diol index (LDI), was proposed. Because of its novelty, the proxy has not been reported for sediments older than 43 ka. We therefore determined the LDI for 14 sediment samples from the early Pleistocene between 2.49 and 2.41 Ma, comprising Marine Isotope Stage (MIS) 98 to 95, and converted the values to sea surface temperature (SST) estimates to test whether the LDI could be applied or not to the early Quaternary. We show that the long chain diols can be preserved in marine sediments from the early Pleistocene, although at our study site this is limited to periods of increased biomarker accumulation (glacials). Although the results are based on a limited time interval and number of samples, the similarity between LDI-based SST and alkenone-based SST from the same samples suggests that the LDI proxy may have potential for studies covering the entire Quaternary. |
| title | Long chain diol index and paleotemperature reconstruction for IODP Hole 306-U1313C |
| topic | 306-U1313C; AGE; DEPTH, sediment/rock; Diols; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp306; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Long chain diol index; North Atlantic Climate 2; Sample code/label; Sample ID; Sea surface temperature, annual mean; SST, from long chain diol index (LDI) |
| url | https://doi.org/10.1594/PANGAEA.780003 |