Citation:

S0377-8398(02)00043-9

Name: Stable oxygen and carbon isotope ratios for Early to Middle Cretaceous benthic and planktonic foraminifera of DSDP Hole 62-463 from the Mid Pacific Mountains (Table 1)
Published: 2002
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Stable isotopic measurements have been made on planktonic and benthic foraminifera of Early to mid-Cretaceous (Early Albian-Cenomanian) age from DSDP site 463 located in the Pacific Ocean. The degree of alteration of the foraminifera has been assessed through the application of scanning electron microscopy. The oxygen isotope data support the view that during the Cenomanian 'globigerine' foraminifera, such as the genus Hedbergella, inhabited near-surface waters, whilst the flattened, keeled, morphotypes lived deeper within the water column. The carbon isotope data reveal a more complex pattern as the delta13C values from planktonic species essentially show a large overlap, which is interpreted in terms of a weak delta13C gradient existing in the upper part of the ocean. In contrast, the oxygen isotope data from planktonic foraminifera from the Late Albian display no discernible depth stratification pattern and the delta13C data also show a large overlap of values indicative of a complete disruption of the upper part of the thermocline. A relatively low surface to bottom water temperature gradient within the Early-Middle Albian part of the succession may reflect a well-mixed ocean. Inferred cool ocean temperatures (and/or high salinities) for the Early Albian may reflect increased oceanic poleward heat transport. An increase in temperature (and/or decrease in salinity) in the Cenomanian suggests a reduction of the poleward heat flux, promoting the build-up of limited polar ice during this period of tropical warmth.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: 21.350200 * Longitude: 174.667800

Date/Time Start: 1978-08-02T00:00:00 * Date/Time End: 1978-08-02T00:00:00

Minimum DEPTH, sediment/rock: 377.59 m * Maximum DEPTH, sediment/rock: 567.61 m

Event(s):

62-463 * Latitude: 21.350200 * Longitude: 174.667800 * Date/Time: 1978-08-02T00:00:00 * Elevation: -2525.0 m * Penetration: 822.5 m * Recovery: 305.5 m * Location: North Pacific/SEAMOUNT * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 92 cores; 820.5 m cored; 0 m drilled; 37.2 % recovery

Comment:

Temperatures calculated using the equation of Erez and Luz (1983) and assuming a deltaw of -1.0? (SMOW)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Sample code/label	Sample label		Price, Gregory D	DSDP/ODP/IODP sample designation
3	Epoch	Epoch		Price, Gregory D
4	Gavelinella sp., δ13C	Gavelinella sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
5	Cyclocarya aschutassica	C. aschutassica		Price, Gregory D	Mass spectrometer VG Prism Series II
6	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Gavelinella sp.
7	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Gyroidinoides sp.
8	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	H. delrioensis
9	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Hedbergella sp.
10	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Osangularia sp.
11	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	P. buxtorfi
12	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	P. stephani
13	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	R. appenninica
14	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	R. cushmani
15	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	R. gandolfii
16	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	R. greenhornensis
17	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	R. ticinensis
18	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Rotalipora sp.
19	Temperature, calculated	T cal	°C	Price, Gregory D	Calculated from stable oxygen isotopes	Ticinella sp.
20	Gyroidinoides sp., δ13C	Gyroidinoides sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
21	Gyroidinoides sp., δ18O	Gyroidinoides sp. δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
22	Hedbergella delrioensis, δ13C	H. delrioensis δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
23	Hedbergella delrioensis, δ18O	H. delrioensis δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
24	Hedbergella sp., δ13C	Hedbergella sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
25	Hedbergella sp., δ18O	Hedbergella sp. δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
26	Osangularia sp., δ13C	Osangularia sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
27	Osangularia sp., δ18O	Osangularia sp. δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
28	Planomalina buxtorfi, δ13C	P. buxtorfi δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
29	Planomalina buxtorfi, δ18O	P. buxtorfi δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
30	Praeglobotruncana stephani, δ13C	P. stephani δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
31	Praeglobotruncana stephani, δ18O	P. stephani δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
32	Rotalipora appenninica, δ13C	R. appenninica δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
33	Rotalipora appenninica, δ18O	R. appenninica δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
34	Rotalipora cushmani, δ13C	R. cushmani δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
35	Rotalipora cushmani, δ18O	R. cushmani δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
36	Rotalipora gandolfii, δ13C	R. gandolfii δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
37	Rotalipora gandolfii, δ18O	R. gandolfii δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
38	Rotalipora greenhornensis, δ13C	R. greenhornensis δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
39	Rotalipora greenhornensis, δ18O	R. greenhornensis δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
40	Rotalipora ticinensis, δ13C	R. ticinensis δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
41	Rotalipora ticinensis, δ18O	R. ticinensis δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
42	Rotalipora sp., δ13C	Rotalipora sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
43	Rotalipora sp., δ18O	Rotalipora sp. δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
44	Ticinella sp., δ13C	Ticinella sp. δ13C	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II
45	Ticinella sp., δ18O	Ticinella sp. δ18O	‰ PDB	Price, Gregory D	Mass spectrometer VG Prism Series II

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

310 data points

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