Controls on C/S ratios in hemipelagic upwelling sediments

Author(s): Morse, John W.; Emeis, Kay C.
Author Affiliation(s): Primary:
Tex. A&M Univ., Dep. Oceanogr., College Station, TX, United States
Other:
Univ. Kiel, Federal Republic of Germany
Volume Title: American Journal of Science
Source: American Journal of Science, 290(10), p.1117-1135. Publisher: Kline Geology Laboratory, Yale University, New Haven, CT, United States. ISSN: 0002-9599 CODEN: AJSCAP
Note: In English
Summary: Tables and plots of average C/S ratios and calculated accumulation rates, criteria for determining the extent of degradation of organic matter, and other indexes of factors controlling the relationship between organic carbon and reduced sulphur concentrations are presented in this discussion of the results of analysis of hemipelagic samples from three different sites of upwelling. The data indicate that iron was probably not a factor limiting pyrite formation, that rates of sulphate reduction were more closely related to the nature of the organic matter being buried than to its concentration or water depth, and that the openness of the depositional system to exchange of reduced sulphur and oxidants exerted a strong influence on the C/S ratios.
Year of Publication: 1990
Research Program: DSDP Deep Sea Drilling Project
ODP Ocean Drilling Program
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Arabian Peninsula; Arabian Sea; Asia; Benguela Current; Carbon; Continental margin; Deep Sea Drilling Project; Diagenesis; East Pacific; Geochemistry; Hemipelagic environment; Indian Ocean; Leg 112; Leg 117; Leg 75; Marine environment; Marine sediments; Metasomatism; Ocean Drilling Program; Ocean circulation; Oceanography; Oman; Organic carbon; Organic compounds; Organic materials; Pacific Ocean; Peru; Processes; Pyritization; Ratios; Sediments; South America; South American Pacific; South Pacific; Southeast Pacific; Sulfur; Upwelling
Record ID: 1990060165
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom

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