Data Description

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Citation:
Rincón-Martínez, D et al. (2011): (Table 1) Planktonic foraminifera counts and stable oxygen isotope ratios of Pacific Ocean surface sediments. doi:10.1594/PANGAEA.774728,
Supplement to: Rincón-Martínez, Daniel; Steph, Silke; Lamy, Frank; Mix, Alan C; Tiedemann, Ralf (2011): Tracking the equatorial front in the eastern equatorial Pacific Ocean by the isotopic and faunal composition of planktonic foraminifera. Marine Micropaleontology, 79(1-2), 24-40, doi:10.1016/j.marmicro.2011.01.001
Abstract:
Core-top samples from the eastern tropical Pacific (10°N to 20°S) were used to test whether the ratio between Globorotalia menardii cultrata and Neogloboquadrina dutertrei abundance (Rc/d) and the oxygen isotope composition (?18O) of planktonic foraminifera can be used as proxies for the latitudinal position of the Equatorial Front. Specifically, this study compares the ?18O values of eight species of planktonic foraminifera (Globigerinoides ruber sensu stricto (ss) and sensu lato (sl), Globigerinoides sacculifer, Globigerinoides triloba, Pulleniatina obliquiloculata, Neogloboquadrina dutertrei, Globorotalia menardii menardii, Globorotalia menardii cultrata and Globorotalia tumida) with the seasonal hydrography of the region, and evaluates the application of each species or combination of species for paleoceanographic reconstructions. The results are consistent with sea surface temperature and water column stratification patterns. We found that in samples north of 1°N, the Rc/d values tend to be higher and d18O values of G. ruber, G. sacculifer, G. triloba, P. obliquiloculata, N. dutertrei, and G. menardii cultrata tend to be lower than those from samples located south of 1°N. We suggest that the combined use of Rc/d and the d18O difference between G. ruber and G. tumida or between P. obliquiloculata and G. tumida are the most suitable tools for reconstructing changes in the latitudinal position of the Equatorial Front and changes in the thermal stratification of the upper water column in the eastern tropical Pacific.
Project(s):
Coverage:
Median Latitude: -4.285228 * Median Longitude: -87.800298 * South-bound Latitude: -20.770000 * West-bound Longitude: -102.575000 * North-bound Latitude: 9.588000 * East-bound Longitude: -76.406000
Minimum DEPTH, sediment/rock: 0.0 m * Maximum DEPTH, sediment/rock: 0.1 m
Event(s):
202-1239A * * Latitude: -0.672000 * Longitude: -82.080830 * Date/Time Start: 2002-05-10T19:45:00 * Date/Time End: 2002-05-13T09:10:00 * Elevation: -1414.7 m * Recovery: 515.10 m * Penetration: 515.40 m * Location: South Pacific Ocean * * Campaign: Leg202 * * Basis: Joides Resolution * * Device: Drilling * * Comment: 55 cores; 515.4 m cored; 0 m drilled; 99.9 % recovery
ME0005A-14MC2 * * Latitude: 5.846500 * Longitude: -86.449000 * Elevation: -2045.0 m * Location: South Pacific Ocean * * Campaign: ME0005A (NEMO) * * Basis: Melville * * Device: MultiCorer *
ME0005A-15MC6 * * Latitude: 4.613700 * Longitude: -86.704000 * Elevation: -904.0 m * Location: South Pacific Ocean * * Campaign: ME0005A (NEMO) * * Basis: Melville * * Device: MultiCorer *
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Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventMetadata
2LATITUDE *LatitudeGeocode
3LONGITUDE *LongitudeGeocode
4Elevation of eventElevationmMetadata
5DEPTH, sediment/rock *DepthmGeocode
6Neogloboquadrina dutertrei *N. dutertrei#Rincón-Martínez, Daniel *Counting 355-400 µm fraction *
7Globorotalia menardii cultrata *G. menardii cultrata#Rincón-Martínez, Daniel *Counting 355-400 µm fraction *
8Foraminifera, planktic *Foram plankt#Rincón-Martínez, Daniel *Counting 355-400 µm fraction *total
9Ratio *RatioRincón-Martínez, Daniel *calculated *G. menardii cultrata/(G. menardii cultrata + N. dutertrei)
10Globigerinoides ruber, d18O *G. ruber d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *s.s.
11Globigerinoides ruber white, d18O *G. ruber w d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *s.l.
12Globigerinoides trilobus, d18O *G. trilobus d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
13Globigerinoides sacculifer, d18O *G. sacculifer d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
14Pulleniatina obliquiloculata, d18O *P. obliqu. d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
15Globorotalia menardii cultrata, d18O *G. menardii cultrata d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
16Neogloboquadrina dutertrei dextral, d18O *N. dutertrei d d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
17Globorotalia tumida, d18O *G. tumida d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
18Globorotalia menardii, d18O *G. menardii d18Oper mil PDBRincón-Martínez, Daniel *Mass spectrometer Finnigan MAT 251 *
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