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Gustafsson, Mikael; Holbourn, Ann; Kuhnt, Wolfgang (2003): Stable carbon and oxygen isotope ratios of bulk sediment, planktonic and benthic foraminifera of the Cenomanian/Turonian section of DSDP Hole 80-551 in the Northeast Atlantic (Table 1). PANGAEA, https://doi.org/10.1594/PANGAEA.695358, Supplement to: Gustafsson, M et al. (2003): Changes in Northeast Atlantic temperature and carbon flux during the Cenomanian/Turonian paleoceanographic event: the Goban Spur stable isotope record. Palaeogeography, Palaeoclimatology, Palaeoecology, 201(1-2), 51-66, https://doi.org/10.1016/S0031-0182(03)00509-1

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Abstract:
Stable isotopes of bulk sediment and well preserved tests of planktonic and benthic foraminifera from midlatitude NE Atlantic DSDP Site 551 (Goban Spur) provide the first estimates of carbon isotope gradients within the water column at a lower bathyal site during the Cenomanian/Turonian boundary interval (CTBI). The CTBI carbon isotope excursion is prominent (up to 2‰ shift in delta13C) in the bulk (coccolith) signal, but less pronounced (approximately 0.5‰ shift in delta13C) in planktonic and benthic foraminifera. This difference indicates a very steep 13C gradient in the upper water column and a very efficient biological pump during the CTBI carbon isotope excursion. We suggest significantly increased seasonal primary production in the uppermost water column with an enhanced shallow water chlorophyll maximum as a cause for this steep carbon isotope gradient. Deep-water and surface-water temperature changes during the CTBI are estimated using benthic and planktonic foraminiferal oxygen isotopes. Warm deep-water masses (13-16°C) and a low temperature gradient within the water column prevailed in the late Cenomanian. Additional warming (approximately 2°C for both surface and deep water) occurred in the latest Cenomanian prior to CTBI black shale deposition. This pattern of CTBI black shale deposition during a temperature maximum is also evident at two low latitude locations (ODP Site 1050, Blake Nose and Tarfaya, southern Morocco).
Project(s):
Coverage:
Latitude: 48.910700 * Longitude: -13.501500
Date/Time Start: 1981-07-16T00:00:00 * Date/Time End: 1981-07-16T00:00:00
Minimum DEPTH, sediment/rock: 132.56 m * Maximum DEPTH, sediment/rock: 142.27 m
Event(s):
80-551 * Latitude: 48.910700 * Longitude: -13.501500 * Date/Time: 1981-07-16T00:00:00 * Elevation: -3887.0 m * Penetration: 201 m * Recovery: 67.2 m * Location: North Atlantic/ESCARPMENT * Campaign: Leg80 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 98.5 m cored; 7 m drilled; 68.2 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, sediment/rockDepthmGeocode
2Sample code/labelSample labelGustafsson, MikaelDSDP/ODP/IODP sample designation
3δ13C, carbonateδ13C carb‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251
4δ18O, carbonateδ18O carb‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251
5δ13Cδ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251fine fraction <63 µm per mil PDB
6δ18Oδ18OGustafsson, MikaelMass spectrometer Finnigan MAT 251fine fraction <63 µm per mil PDB
7Whiteinella aprica, δ13CW. aprica δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
8Whiteinella aprica, δ18OW. aprica δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
9Whiteinella archaeocretacea, δ13CW. archaeocretacea δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
10Whiteinella archaeocretacea, δ18OW. archaeocretacea δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
11Dicarinella hagni, δ13CD. hagni δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
12Dicarinella hagni, δ18OD. hagni δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
13Hedbergella delrioensis, δ13CH. delrioensis δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
14Hedbergella delrioensis, δ18OH. delrioensis δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
15Rotalipora cushmani, δ13CR. cushmani δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
16Rotalipora cushmani, δ18OR. cushmani δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
17Rotalipora greenhornensis, δ13CR. greenhornensis δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
18Rotalipora greenhornensis, δ18OR. greenhornensis δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251> 250 µm fraction
19Gyroidinoides lenticulus, δ13CG. lenticulus δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251125-250 µm fraction
20Gyroidinoides lenticulus, δ18OG. lenticulus δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 251125-250 µm fraction
21Tappanina laciniosa, δ13CT. laciniosa δ13C‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 25163-125 µm fraction
22Tappanina laciniosa, δ18OT. laciniosa δ18O‰ PDBGustafsson, MikaelMass spectrometer Finnigan MAT 25163-125 µm fraction
Size:
365 data points

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