Carbon and oxygen isotopic disequilibria of Recent deep-sea benthic Foraminifera

Author(s): Graham, David W.; Corliss, Bruce H.; Bender, Michael L.; Keigwin, Lloyd D., Jr.
Author Affiliation(s): Primary:
University of Rhode Island, Graduate School of Oceanography, Kingston, RI, United States
Woods Hole Oceanographic Institution, United States
Volume Title: Cenozoic paleoceanography
Volume Author(s): Kennett, J. P., prefacer
Source: Cenozoic paleoceanography, prefaced by J. P. Kennett. Marine Micropaleontology, 6(5-6), p.483-497. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0377-8398 CODEN: MAMIDH
Note: In English. NSF Grant OCE-79-14594 and DPP-78-21105. 32 refs.; illus., incl. 5 tables
Summary: The carbon and oxygen isotopic compositions of 149 samples of benthic foraminifera from deep sea core tops indicate that none of the nine species studied secretes calcium carbonate in isotopic equilibrium with ambient bottom water. Uvigerina, Pyrgo murrhina, and Oridorsalis tener are the closest to O18 equilibrium while Planulina wuellerstorfi and P. murrhina are the closest to C13 equilibrium. P. wuellerstorfi shows the most systematic relationship between C13 and bottom water apparent oxygen utilization. The intraspecific variabilities in O18 and C13 suggest that estimates of bottom water paleotemperatures can be made to a precision of 0.7C, while estimates of past apparent oxygen utilization can be made to 35 micromol/kg. Based on intraspecific comparisons of the Recent samples with fossils, no temporal changes in the degree of either O18 or C13 disequilibrium have been detected for Planulina wuellerstorfi, Uvigerina, Oridorsalis tener and Globocassidulina subglobosa. (Auth.)
Year of Publication: 1981
Research Program: DSDP Deep Sea Drilling Project
Key Words: 02 Geochemistry; 24 Surficial Geology, Quaternary Geology; Atlantic Ocean; Benthic taxa; C-13/C-12; Carbon; Caribbean Sea; Cenozoic; Colombian Basin; Cores; DSDP Site 154; DSDP Site 157; DSDP Site 310; Deep Sea Drilling Project; Deep-sea environment; East Pacific; Equatorial Pacific; Foraminifera; Hess Rise; Holocene; Indian Ocean; Invertebrata; Isotope ratios; Isotopes; Leg 15; Leg 16; Leg 32; Marine environment; Miocene; Modern analogs; Neogene; North Atlantic; North Pacific; Northwest Pacific; O-18/O-16; Oxygen; Pacific Ocean; Paleoclimatology; Paleotemperature; Protista; Quaternary; Reconstruction; South Pacific; Southeast Pacific; Stable isotopes; Tertiary; West Pacific
Coordinates: N110518 N110518 W0802245 W0802245
S014542 S014542 W0855412 W0855412
N365206 N365207 E1765406 E1765405
Record ID: 2009022798
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States