Age model and alkenone-based sea surface temperature record of ODP Site 177-1090
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2026
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| _version_ | 1867168578604630016 |
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| author | Hoegler, Brianna Herbert, Timothy D Pahigian, Jamie |
| author_facet | Hoegler, Brianna Herbert, Timothy D Pahigian, Jamie |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Alkenones, lipid biomarkers produced by certain species of coccolithophores and preserved in marine sediment cores, are a well-established proxy of sea surface temperature (SST). Here, we share a dataset containing a high resolution (~2-3 kyr) record of previously unpublished SST estimates for ODP Site 1090 during the Pliocene, calculated using the Uk'37 alkenone unsaturation index. The data spans approximately 4.27-2.58 Ma. We additionally supply the estimated maximum %C37:4, revealing low concentrations of this ketone. Using our SST estimates and shipboard data (magnetic susceptibility and cryomagnetic inclination), we produced an improved composite of ODP Site 1090 Holes D and E by correlating the two holes' properties. We then used biostratigraphic, magnetostratigraphic, and SST data to establish constraints for our age model. Although alkenone-based SST records Site ODP 1090 records already exist, we were motivated to create this reconstruction because inconsistent temperature estimates across existing reconstructions (Etourneau et al., 2010 & Martínez-Garcia et al., 2010) and unusually high reported C37:4 values in the Martínez-Garcia record. Our record reveals both lower SST estimates and lower %C37:4 than those in the Martínez-Garcia record. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_988391 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Age model and alkenone-based sea surface temperature record of ODP Site 177-1090 Hoegler, Brianna Herbert, Timothy D Pahigian, Jamie Alkenone; alkenone concentration; alkenone paleothermometry; alkenone SST; Alkenone Uk'37 index; ODP; ODP 1090; Paleoceanographic proxies; Paleoceanography; Pliocene; Pliocene Paleoceanography; Sea surface temperature; SST Alkenones, lipid biomarkers produced by certain species of coccolithophores and preserved in marine sediment cores, are a well-established proxy of sea surface temperature (SST). Here, we share a dataset containing a high resolution (~2-3 kyr) record of previously unpublished SST estimates for ODP Site 1090 during the Pliocene, calculated using the Uk'37 alkenone unsaturation index. The data spans approximately 4.27-2.58 Ma. We additionally supply the estimated maximum %C37:4, revealing low concentrations of this ketone. Using our SST estimates and shipboard data (magnetic susceptibility and cryomagnetic inclination), we produced an improved composite of ODP Site 1090 Holes D and E by correlating the two holes' properties. We then used biostratigraphic, magnetostratigraphic, and SST data to establish constraints for our age model. Although alkenone-based SST records Site ODP 1090 records already exist, we were motivated to create this reconstruction because inconsistent temperature estimates across existing reconstructions (Etourneau et al., 2010 & Martínez-Garcia et al., 2010) and unusually high reported C37:4 values in the Martínez-Garcia record. Our record reveals both lower SST estimates and lower %C37:4 than those in the Martínez-Garcia record. |
| title | Age model and alkenone-based sea surface temperature record of ODP Site 177-1090 |
| topic | Alkenone; alkenone concentration; alkenone paleothermometry; alkenone SST; Alkenone Uk'37 index; ODP; ODP 1090; Paleoceanographic proxies; Paleoceanography; Pliocene; Pliocene Paleoceanography; Sea surface temperature; SST |
| url | https://doi.org/10.1594/PANGAEA.988391 |