Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235
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| Format: | Dataset Open Access |
| Sprache: | en |
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PANGAEA
2023
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| _version_ | 1867168221821403136 |
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| author | Hättig, Katrin Varma, Devika van der Meer, Marcel T J Schouten, Stefan |
| author_facet | Hättig, Katrin Varma, Devika van der Meer, Marcel T J Schouten, Stefan |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Hydrogen isotopic compositions of C37 long chain alkenones (δ2HC37) have been proposed as a proxy for past seawater salinity and applied in several regions. However, previous studies were based solely on a single core and often suggested unlikely large changes in salinity. Here we present a new δ2HC37 record, in combination with oxygen isotopes of benthic foraminifera from the same samples, from a sediment core from the Chilean margin (ODP site 1235). The observed negative shift in δ2HC37 of 20‰ during deglaciation was identical to that of the nearby located, but deeper, ODP core 1234 (Weiss et al., 2019), suggesting a regionally consistent shift in δ2HC37. Here we present an isotope dataset spanning 0.15-94.43 mbsf. The age model of Haettig et al., 2023 covers the last 40.000 years spanning 0.15-49.50 mbfs. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_958880 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235 Hättig, Katrin Varma, Devika van der Meer, Marcel T J Schouten, Stefan 202-1235A; 202-1235B; 202-1235C; AGE; Alkenone C37:2, δD; Alkenone C37:2, δD, standard deviation; Alkenone C37:3, δD; Alkenone C37:3, δD, standard deviation; Alkenones; Chile Margin; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Hydrogen isotopic composition; Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V; Joides Resolution; Leg202; Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL VI; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; Ocean Drilling Program; ODP; Oxygen isotopes; Replicates; Sample code/label; South Pacific Ocean; Uvigerina; Uvigerina spp., δ18O; Uvigerina spp., δ18O, standard deviation; δ Deuterium, alkenone, C37; δ Deuterium, alkenone, C37, standard deviation; δ Deuterium, alkenone, C38; δ Deuterium, alkenone, C38, standard deviation Hydrogen isotopic compositions of C37 long chain alkenones (δ2HC37) have been proposed as a proxy for past seawater salinity and applied in several regions. However, previous studies were based solely on a single core and often suggested unlikely large changes in salinity. Here we present a new δ2HC37 record, in combination with oxygen isotopes of benthic foraminifera from the same samples, from a sediment core from the Chilean margin (ODP site 1235). The observed negative shift in δ2HC37 of 20‰ during deglaciation was identical to that of the nearby located, but deeper, ODP core 1234 (Weiss et al., 2019), suggesting a regionally consistent shift in δ2HC37. Here we present an isotope dataset spanning 0.15-94.43 mbsf. The age model of Haettig et al., 2023 covers the last 40.000 years spanning 0.15-49.50 mbfs. |
| title | Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235 |
| topic | 202-1235A; 202-1235B; 202-1235C; AGE; Alkenone C37:2, δD; Alkenone C37:2, δD, standard deviation; Alkenone C37:3, δD; Alkenone C37:3, δD, standard deviation; Alkenones; Chile Margin; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Hydrogen isotopic composition; Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V; Joides Resolution; Leg202; Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL VI; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; Ocean Drilling Program; ODP; Oxygen isotopes; Replicates; Sample code/label; South Pacific Ocean; Uvigerina; Uvigerina spp., δ18O; Uvigerina spp., δ18O, standard deviation; δ Deuterium, alkenone, C37; δ Deuterium, alkenone, C37, standard deviation; δ Deuterium, alkenone, C38; δ Deuterium, alkenone, C38, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.958880 |