Geochemistry of barium in marine sediments; implications for its use as a paleoproxy

Online Access: Get full text
doi: 10.1016/S0016-7037(98)00248-8
Author(s): McManus, James; Berelson, William M.; Klinkhammer, Gary P.; Johnson, Kenneth S.; Coale, Kenneth H.; Anderson, Robert F.; Kumar, Niraj; Burdige, David J.; Hammond, Douglas E.; Brumsack, Hans J.; McCorkle, Daniel C.; Rushdi, Ahmed
Author Affiliation(s): Primary:
Oregon State University, College of Ocean and Atmospheric Sciences, Corvallis, OR, United States
Other:
University of Southern California, United States
Moss Landing Marine Laboratories, United States
Lamont-Doherty Earth Observatory, United States
Old Dominion University, United States
ICBM Oldenburg University, Federal Republic of Germany
Woods Hole Oceanographic Institution, United States
Volume Title: Geochimica et Cosmochimica Acta
Source: Geochimica et Cosmochimica Acta, 62(21-22), p.3453-3473. Publisher: Pergamon, Oxford, International. ISSN: 0016-7037 CODEN: GCACAK
Note: In English. 78 refs.; illus., incl. 5 tables, sketch map
Summary: Data are assembled on Ba and associated elements and S isotope abundances in sediment porewaters, benthic incubation chambers, and marine sediments from a wide range of geochemical environments to evaluate the behaviour of Ba during early diagenesis. The resulting data do not support the hypothesis that the Ba accumulation rate is a tracer for palaeoproductivity (with porewater anoxia not depleting porewater sulphate). Solid-phase Ba records are unreliable as quantitative indicators for the history of ocean productivity in environments undergoing suboxic diagenesis. The environments sampled for the porewater and benthic lander analyses included carbonate-rich sediments underlying the Equatorial Pacific upwelling region, continental margin Californian borderlands. Ba porewater saturation with respect to baryte does not necessarily facilitate Ba preservation; Ba arriving at the seafloor with high C export and low bottom water O2 may be poorly preserved.
Year of Publication: 1998
Key Words: 02 Geochemistry; 24 Surficial Geology, Quaternary Geology; Actinides; Alkaline earth metals; Authigenesis; Barite; Barium; Biogenic processes; California; Cenozoic; Continental margin sedimentation; Diagenesis; East Pacific; Errors; Experimental studies; Last glacial maximum; Marine environment; Marine sediments; Metals; Modern analogs; North Pacific; Northeast Pacific; Pacific Ocean; Pore water; Productivity; Quaternary; Sedimentation; Sedimentation rates; Sediments; Shelf environment; Sulfates; Theoretical studies; United States; Uranium
Coordinates: N320000 N340000 W1180000 W1210000
N350000 N361000 W1210000 W1223000
Record ID: 1999032776
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom