Citation:

93PA03271

Name: Stable carbon isotope in bottom water and Cibicidoides wuellerstorfi on the Ontong Java Plateau and Emperor Seamount
Published: 1994
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1994 (exact date unknown) • DOI registered: 2010-01-07

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Abstract:

We have measured the carbon isotopic composition of dissolved inorganic carbon in bottom waters of the Ontong Java Plateau (western equatorial Pacific) and on the northern Emperor Seamounts (northwest Pacific). Each of these locations is several hundred miles from the nearest Geochemical Ocean Sections Study (GEOSECS) stations, and the observed delta13C values at each site differ substantially from regionally averaged GEOSECS delta13C profiles. We discuss the possible causes of these differences, including horizontal variability, near-bottom effects, and problems with the Pacific GEOSECS delta13C data. We also measured the isotopic composition (C and O) of core top C. wuellerstorfi from a depth transect of cores at each location. The delta18O data are used to verify that our samples are Holocene. Comparison of foraminiferal and bottom water delta13C values shows that this species faithfully records bottom water delta13C at both sites and demonstrates that there is no depth-related artifact in the dissolved inorganic carbon-C. wuellerstorfi delta13C relationship at these sites.

Coverage:

Median Latitude: 27.126796 * Median Longitude: 163.103688 * South-bound Latitude: -2.242660 * West-bound Longitude: 156.997830 * North-bound Latitude: 62.058300 * East-bound Longitude: 168.136700

Date/Time Start: 1980-06-17T00:00:00 * Date/Time End: 1991-07-23T00:00:00

Event(s):

6-TOW-001GGC (RNDB-1GGC) * Latitude: 51.156160 * Longitude: 167.656160 * Elevation: -2393.0 m * Recovery: 1.36 m * Location: Pacific * Campaign: * Basis: Thomas Washington * Method/Device: Giant gravity corer (GGC)

6-TOW-002GGC (RNDB-2GGC) * Latitude: 51.122500 * Longitude: 167.789160 * Elevation: -2507.0 m * Recovery: 1.50 m * Location: Pacific * Campaign: * Basis: Thomas Washington * Method/Device: Giant gravity corer (GGC)

6-TOW-003GGC (RNDB-3GGC) * Latitude: 51.106660 * Longitude: 167.829000 * Elevation: -2610.0 m * Recovery: 1.81 m * Location: Pacific * Campaign: * Basis: Thomas Washington * Method/Device: Giant gravity corer (GGC)

License:

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

Size:

3 datasets

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Datasets listed in this publication series

McCorkle, DC; Keigwin, LD (1994): (Table 2a) Stable carbon isotope ratios of dissolved inorganic carbon in bottom water of Ontong Java Plateau. https://doi.org/10.1594/PANGAEA.52669
McCorkle, DC; Keigwin, LD (1994): (Table 2b) Stable carbon isotope ratios of dissolved inorganic carbon in bottom water of Emperor Seamount. https://doi.org/10.1594/PANGAEA.729847
McCorkle, DC; Keigwin, LD (1994): (Table 3) Stable isotope ratios of Cibicidoides wuellerstorfi from surface sediment samples. https://doi.org/10.1594/PANGAEA.52668