Carbon and Sulphur concentrations of sediments from Peru, Oman and Benguela upwelling environments

DOI

Abundances of organic carbon, sulfur, and reactive iron in sediments of three upwelling environments (Peru, Oman and Benguela) suggest that organic carbon/reduced sulfur ratios (C/S-ratios) in this category of marine sediments deviate considerably from previously established empirical ratios in normal marine sediments. To clarify the discrepancies, we investigated those components of the diagenetic system that limit the formation of pyrite: sulfate concentrations and reduction rates in pore waters, availability of reactive iron, and the quantity and quality of organic matter. All three limitations are evident in our sample pools. The results suggest that C/S-ratios in recent and fossil marine sediments rich in organic matter may be unsuitable as paleoenvironmental indicators.

Supplement to: Emeis, Kay-Christian; Morse, John W (1993): Zur Systematik der Kohlenstoff-Schwefel-Eisen-Verhältnisse in Auftriebssedimenten. Geologische Rundschau, 82(4), 604-618

Identifier
DOI https://doi.org/10.1594/PANGAEA.667166
Related Identifier https://doi.org/10.1007/BF00191488
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.667166
Provenance
Creator Emeis, Kay-Christian (ORCID: 0000-0003-0459-913X); Morse, John W
Publisher PANGAEA
Publication Year 1993
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Publication Series of Datasets; Collection
Format application/zip
Size 6 datasets
Discipline Earth System Research
Spatial Coverage (-80.584W, -19.744S, 59.864E, 18.487N); South Atlantic; South Pacific Ocean; Arabian Sea
Temporal Coverage Begin 1980-08-20T00:00:00Z
Temporal Coverage End 1987-10-09T00:00:00Z