Small cycle sedimentation of organic matter from ODP Hole 128-798B in the Japan Sea (Table 1)

DOI

Sedimentological and organic geochemical investigations of sediments of Site 798 give important information about the paleoenvironmental and paleoceanographic conditions of the Japan Sea. Distinct dark/light cycles from the uppermost 37 m of the record (i.e. the last 200,000 years) were sampled in detail and analyzed for TOC content, C/N-ratios and hydrogen index values to characterize the organic material. A subdivision into three types of cycles was possible, representing different environmental conditions during formation of the dark/light rhythms. Additionally, the data were correlated with the global oxygen isotope curve and biogenic opal data to define the stratigraphic framework and stage boundaries. The results indicate that glacial intervals are generally dominated by a very distinctive cyclicity whereas interglacial sediments are more homogenous and cycles less pronounced. Glacial sea-level lowstands probably lead to a stratification of the water column and anoxic sedimentary conditions (and, thus, distinct dark/light cyclicity with an enrichment of marine organic carbon in the dark part) while the well-mixed Japan Sea of the interglacial periods barely reached oxygen-deficient levels although high productivity caused the enhanced oxygen demand due to the decay of marine organic material. Dilution by siliciclastic material and supply of terrigenous organic matter may occasionally control the organic carbon fluctuations.

Supplement to: Stax, Rainer; Stein, Ruediger (1994): Quaternary organic carbon cycles in the Japan Sea (ODP-Site 798) and their paleoceanographic implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 108(3-4), 509-521

Identifier
DOI https://doi.org/10.1594/PANGAEA.72307
Related Identifier https://doi.org/10.1016/0031-0182(94)90249-6
Related Identifier https://nbn-resolving.org/urn:nbn:de:gbv:46-ep000106717
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.72307
Provenance
Creator Stax, Rainer; Stein, Ruediger ORCID logo
Publisher PANGAEA
Publication Year 1994
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 1557 data points
Discipline Earth System Research
Spatial Coverage (134.800 LON, 37.038 LAT); Japan Sea
Temporal Coverage Begin 1989-08-28T10:24:00Z
Temporal Coverage End 1989-08-31T08:00:00Z