Hättig, Katrin; Varma, Devika; van der Meer, Marcel T J; Schouten, Stefan (2023): Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.958880
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Abstract:
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.
Supplement to:
Hättig, Katrin; Varma, Devika; Schouten, Stefan; van der Meer, Marcel T J (2023): Glacial-interglacial sea water isotope change near the Chilean Margin as reflected by δ 2 H of C37 alkenones. https://doi.org/10.5194/egusphere-2023-1042
Related to:
Hättig, Katrin; Varma, Devika; van der Meer, Marcel T J; Reichart, Gert-Jan; Schouten, Stefan (2023): Age model for ODP Leg 202 Site 1235 and Site 1234. PANGAEA, https://doi.org/10.1594/PANGAEA.957070
Varma, Devika; Hättig, Katrin; van der Meer, Marcel T J; Reichart, Gert-Jan; Schouten, Stefan (2023): SST Proxies Chilean (ODP Leg 202 Site 1235 and Site 1234) and Angola Margin (ODP Leg 175 Site 1078 and Site 1079). PANGAEA, https://doi.org/10.1594/PANGAEA.957090
Project(s):
Funding:
European Commission (EC), grant/award no. 847504: Local training network: Netherlands Earth System Science Centre: “NESSC”
Coverage:
Median Latitude: -36.159897 * Median Longitude: -73.566380 * South-bound Latitude: -36.159980 * West-bound Longitude: -73.566500 * North-bound Latitude: -36.159850 * East-bound Longitude: -73.566260
Date/Time Start: 2002-04-17T04:15:00 * Date/Time End: 2002-04-18T10:00:00
Minimum DEPTH, sediment/rock: 0.15 m * Maximum DEPTH, sediment/rock: 94.43 m
Event(s):
202-1235A * Latitude: -36.159850 * Longitude: -73.566500 * Date/Time Start: 2002-04-17T04:15:00 * Date/Time End: 2002-04-17T19:55:00 * Elevation: -489.7 m * Penetration: 181.3 m * Recovery: 182.78 m * Location: South Pacific Ocean * Campaign: Leg202 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 181.3 m cored; 0 m drilled; 100.8 % recovery
202-1235B * Latitude: -36.159860 * Longitude: -73.566380 * Date/Time Start: 2002-04-17T19:55:00 * Date/Time End: 2002-04-18T10:00:00 * Elevation: -488.5 m * Penetration: 176.2 m * Recovery: 178.81 m * Location: South Pacific Ocean * Campaign: Leg202 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 176.2 m cored; 0 m drilled; 101.5 % recovery
202-1235C * Latitude: -36.159980 * Longitude: -73.566260 * Date/Time: 2002-04-18T10:00:00 * Elevation: -488.5 m * Penetration: 152.5 m * Recovery: 151.83 m * Location: South Pacific Ocean * Campaign: Leg202 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 16 cores; 152 m cored; 0.5 m drilled; 99.9 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hättig, Katrin | |||
| 2 | Sample code/label | Sample label | Hättig, Katrin | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Hättig, Katrin | Geocode – mbsf | |
| 4 | Depth, composite | Depth comp | mcd | Hättig, Katrin | ||
| 5 | AGE | Age | ka BP | Hättig, Katrin | Geocode | |
| 6 | δ Deuterium, alkenone, C37 | δD C37 | ‰ SMOW | Hättig, Katrin | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V | vs. VSMOW |
| 7 | δ Deuterium, alkenone, C37, standard deviation | δD C37 std dev | ± | Hättig, Katrin | ||
| 8 | Alkenone C37:3, δD | C37:3 δD | ‰ SMOW | Hättig, Katrin | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V | vs. VSMOW |
| 9 | Alkenone C37:3, δD, standard deviation | C37:3 δD std dev | ± | Hättig, Katrin | ||
| 10 | Alkenone C37:2, δD | C37:2 δD | ‰ SMOW | Hättig, Katrin | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V | vs. VSMOW |
| 11 | Alkenone C37:2, δD, standard deviation | C37:2 δD std dev | ± | Hättig, Katrin | ||
| 12 | δ Deuterium, alkenone, C38 | δD C38 | ‰ SMOW | Hättig, Katrin | Isotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V | vs. VSMOW |
| 13 | δ Deuterium, alkenone, C38, standard deviation | δD C38 std dev | ± | Hättig, Katrin | ||
| 14 | Replicates | Repl | # | Hättig, Katrin | Number of replication analysis of hydrogen isotopes | |
| 15 | Uvigerina spp., δ18O | Uvigerina spp. δ18O | ‰ PDB | Hättig, Katrin | Mass spectrometer, Finnigan, MAT 253; coupled with Carbonate preparation device, Finnigan, KIEL VI | vs. VPDB |
| 16 | Replicates | Repl | # | Hättig, Katrin | Number of replication analysis of oxygen isotopes | |
| 17 | Uvigerina spp., δ18O standard deviation | Uvigerina spp. δ18O std dev | ± | Hättig, Katrin |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
649 data points