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Hättig, Katrin; Varma, Devika; Louwye, Stephen; Schouten, Stefan; van der Meer, Marcel T J: Hydrogen Isotopes and revised SST of middle Miocene seawater from IODP Site 307-U1318 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.967157 (dataset in review)

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Abstract:
Mid-Miocene (16.6 - 12.8 Ma) hydrogen isotopes of alkenones and sea temperatures are obtained from the sediment record of Integrated Ocean Discovery Program (IODP) Expedition 307, Site U1318 drilled in the Porcupine Basin, north east Atlantic at a water depth of ~ 400 m. We present a revised temperature record (cf Sangiorgi et al., 2021, doi:10.1029/2020PA004059). The polar fractions used in the study of Sangiorgi et al. (2021, doi:10.1029/2020PA004059) were re-analysed and integrated for TEX86H and along with the UK'37 record extended by 25 samples. Across the total record (269 samples), 124 ketone samples were analysed for the hydrogen isotopic compositions of C37 long chain alkenones (δ2HC37) with a GC-IRMS.
Keyword(s):
Hydrogen isotopes; oxygen isotopes; Temperature
Supplement to:
Hättig, Katrin; Varma, Devika; Louwye, Stephen; Schouten, Stefan; van der Meer, Marcel T J (in review): Stable Middle Miocene seawater isotopes in the eastern North Atlantic Ocean. Paleoceanography and Paleoclimatology
Funding:
European Commission (EC), grant/award no. 847504: Local training network: Netherlands Earth System Science Centre: “NESSC”
Coverage:
Median Latitude: 51.435817 * Median Longitude: -11.550492 * South-bound Latitude: 51.435800 * West-bound Longitude: -11.550667 * North-bound Latitude: 51.435833 * East-bound Longitude: -11.550317
Minimum DEPTH, sediment/rock: 87.500 m * Maximum DEPTH, sediment/rock: 241.325 m
Event(s):
307-U1318B * Latitude: 51.435800 * Longitude: -11.550317 * Elevation: -408.8 m * Recovery: 213 m * Campaign: Exp307 (Porcupine Basin Carbonate Mounds) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 244.6 m cored; 87.1 % recovered; 0 m drilled; 244.6 m penetrated
307-U1318C * Latitude: 51.435833 * Longitude: -11.550667 * Elevation: -409.9 m * Recovery: 84.15 m * Campaign: Exp307 (Porcupine Basin Carbonate Mounds) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 87.4 m cored; 96.3 % recovered; 67.1 m drilled; 154.5 m penetrated
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventHättig, Katrin
2Sample code/labelSample labelHättig, Katrin
3DEPTH, sediment/rockDepth sedmHättig, KatrinGeocode
4Depth, compositeDepth compmcdHättig, Katrin
5AgeAgeMaHättig, KatrinAccording to Sangiorgi (2021)https://doi.pangaea.de/10.1594/PANGAEA.926325
6Laboratory code/labelLab labelHättig, KatrinNIOZ Lab-ID; Anchelique Mets (AM code), Willemijn Quaijtaal (WQ code), Katrin Haettig (s.b. code)
7Alkenone C37:2, δDC37:2 δD‰ SMOWHättig, KatrinIsotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V
8Alkenone C37:2, δD, standard deviationC37:2 δD std dev±Hättig, KatrinIsotope Ratio Mass Spectrometer (IRMS), Thermo Fisher Scientific, Delta V
9ReplicatesRepl#Hättig, Katrin
10Branched and isoprenoid tetraether indexBITSangiorgi, FrancescaAccording to Sangiorgi (2021)doi:10.1594/PANGAEA.926325
11Tetraether index of 86 carbon atomsTEX86Sangiorgi, FrancescaAccording to Sangiorgi (2021)doi:10.1594/PANGAEA.926325
12Sea surface temperatureSST°CSangiorgi, FrancescaAccording to Sangiorgi (2021)doi:10.1594/PANGAEA.926325
13Sea surface temperatureSST°CSangiorgi, FrancescaAccording to Sangiorgi (2021)doi:10.1594/PANGAEA.926325
14Sea surface temperatureSST°CSangiorgi, FrancescaAccording to Sangiorgi (2021)doi:10.1594/PANGAEA.926325
15Branched and isoprenoid tetraether indexBITVarma, DevikaCalculated according to Hopmans et al. (2004); De Jonge et al. (2015)De Jonge et al. (2015; doi:10.1016/j.gca.2015.05.044); Hopmans et al. (2004; doi:10.1016/j.epsl.2004.05.012)
16Tetraether index of 86 carbon atomsTEX86Varma, DevikaCalculated according to Schouten et al. (2007)0 m calibration
17Sea surface temperatureSST°CHättig, KatrinCalculated according to Kim et al. (2010)0-200 m calibration
18Sea surface temperatureSST°CHättig, KatrinCalculated according to Kim et al. (2012)
19Alkenone, unsaturation index UK'37UK'37Hättig, KatrinCalculated from UK'37 (Prahl and Wakeham, 1987)
20Sea surface temperatureSST°CHättig, KatrinCalculated from UK'37 (Müller et al, 1998)
21Sea surface temperatureSST°CHättig, KatrinCalculated from UK'37 (Müller et al, 1998)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
3991 data points

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