Organic geochemistry of late Cenozoic sediments from the subtropical South Atlantic Ocean

Author(s): Keswani, Sushiel R.; Dunham, Keith W.; Meyers, Philip A.
Author Affiliation(s): Primary:
Univ. Mich., Oceanogr. Program, Ann Arbor, MI, United States
Volume Title: Marine Geology
Source: Marine Geology, 61(1), p.25-42. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0025-3227 CODEN: MAGEA6
Note: In English; illus. incl. 7 anal.
Summary: Organic matter has been characterized in samples from seven Deep Sea Drilling Project sites. Organic carbon concentrations average 0.3% for most samples, and n-alkanoic acid, n-alkanol, and alkane biomarkers indicate extensive microbial reworking of organic matter in these organic-carbon-lead sediments. Samples from the easternmost parts of the South Atlantic contain an average of 4.1% organic carbon and reflect the high productivity associated with the Benguela Current. Lipid biomarkers show less microbial reworking in these sediments. Eolian transport of land-derived hydrocarbons is evident at most of these oceanic locations.—Modified journal abstract.
Year of Publication: 1984
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
Key Words: 02 Geochemistry; 07 Marine Geology and Oceanography; Aliphatic hydrocarbons; Alkanes; Atlantic Ocean; Benguela Current; Carbon; Cenozoic; Deep Sea Drilling Project; Fatty acids; Geochemistry; Hydrocarbons; IPOD; Leg 72; Leg 74; Leg 75; Lipids; Marine sediments; Miocene; Neogene; Organic acids; Organic carbon; Organic compounds; Organic materials; Pleistocene; Pliocene; Quaternary; Sediments; South Atlantic; Tertiary; Wind transport
Coordinates: S320000 S180000 E0150000 W0500000
Record ID: 1984050849
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.