Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Bonneau, M-C; Vergnaud-Grazzini, Colette; Berger, Wolfgang H (1980): Oxygen and carbon isotope ratios for six planktonic foraminifer species from different water depth, Ontong-Java Plateau, Pacific (Table 2). PANGAEA, https://doi.org/10.1594/PANGAEA.407617, Supplement to: Bonneau, M-C et al. (1980): Stable isotope fractionation and differential dissolution in recent planktonic foraminifera from Pacific box-cores. Oceanologica Acta, 3(3), 377-381

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Stable isotope analyses and scanning electron micrographs have been carried out on six planktonic forminifera species, Pulleniatina obliquiloculata, Globorotalia tumida, Sphaeroidinella dehiscens, Globigerinoides ruber, Globigerinoides sacculifer and Globigerinoides quadrilobatus from eleven box-cores taken at increasing depths in the equatorial Ontong-Java Plateau (Pacific). This allows us to describe the way dissolution affects the microstructures of the tests of the different species and to quantify the changes of isotopic composition. We may conclude that:
1) dissolution effects on test morphology and stable isotope compositions are species dependent, species with a similar habitat showing a similar trend;
2) the shallow water, thin-shelled species are the first to disappear: scanning electron microscope (SEM) work shows alteration of outer layers. Deep water, thick-shelled species are present in all samples: SEM work shows breakdown and disparition of inner layers;
3) for all species there is a similar trend towards increasing delta18O values with increasing water depths and increasing dissolution. This effect may be as high as 0.6 ‰ per thousand meters for Globorotalia tumida;
4) below the lysocline, around 3500 m, it appears that 13C/12C ratios slightly increase towards equilibrium values for thick shelled species: G. tumida, P. obliquiloculata and S. dehiscens.
14C dates and isotope stratigraphy of two box-cores show that all samples are recent in age, and exclude upward mixing of glacial deposits as an important factor.
Coverage:
Median Latitude: 0.353909 * Median Longitude: 160.056182 * South-bound Latitude: -2.225000 * West-bound Longitude: 155.868000 * North-bound Latitude: 2.785000 * East-bound Longitude: 163.707000
Date/Time Start: 1975-04-11T00:00:00 * Date/Time End: 1975-05-02T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
ERDC-079BX * Latitude: 2.785000 * Longitude: 156.230000 * Date/Time: 1975-04-11T00:00:00 * Elevation: -2766.0 m * Campaign: ERDC * Basis: Eurydice * Method/Device: Box corer (BC)
ERDC-088BX * Latitude: -0.048000 * Longitude: 155.868000 * Date/Time: 1975-04-18T00:00:00 * Elevation: -1924.0 m * Campaign: ERDC * Basis: Eurydice * Method/Device: Box corer (BC)
ERDC-092BX * Latitude: -2.225000 * Longitude: 156.998000 * Date/Time: 1975-04-19T00:00:00 * Elevation: -1598.0 m * Campaign: ERDC * Basis: Eurydice * Method/Device: Box corer (BC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5DEPTH, sediment/rockDepthmGeocode
6Globorotalia tumida, δ18OG. tumida δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
7Globorotalia tumida, δ13CG. tumida δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
8Sphaeroidinella dehiscens, δ18OS. dehiscens δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
9Sphaeroidinella dehiscens, δ13CS. dehiscens δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
10Pulleniatina obliquiloculata, δ18OP. obliquiloculata δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
11Pulleniatina obliquiloculata, δ13CP. obliquiloculata δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
12Globigerinoides ruber, δ18OG. ruber δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry250-315 µm
13Globigerinoides ruber, δ13CG. ruber δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry250-315 µm
14Globigerinoides sacculifer, δ18OG. sacculifer δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
15Globigerinoides sacculifer, δ13CG. sacculifer δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
16Globigerinoides quadrilobatus, δ18OG. quadril δ18O‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
17Globigerinoides quadrilobatus, δ13CG. quadril δ13C‰ PDBBonneau, M-CIsotope ratio mass spectrometry>400 µm
Size:
92 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML