(Table 1) Sample identification and bulk properties, Hole 175-1084A

The major biomarker compounds in surface (0.95 meters below seafloor [mbsf]) and deep (579.92 mbsf) sediment samples from the Benguela Current coastal upwelling system off Lüderitz, Namibia (Leg 175 Hole 1084A), have been identified and quantified. Lipids of marine origin (especially long-chain alke...

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Bibliographic Details
Main Authors: Marlow, J R, Farrimond, Paul, Rosell-Melé, Antoni
Format: Dataset
Language:English
Published: PANGAEA 2001
Subjects:
175-1084A
Accumulation rate
calcium carbonate
total organic carbon
AGE
Benguela Current
South Atlantic Ocean
Calculated
see reference(s)
Carbon
organic
total
DEPTH
sediment/rock
DRILL
Drilling/drill rig
DSDP/ODP/IODP sample designation
Element analyser CHN
LECO
Joides Resolution
Leg175
Lithologic unit/sequence
Ocean Drilling Program
ODP
Sample code/label
Sedimentation rate
Sulfur
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.198765
https://doi.org/10.1594/PANGAEA.198765
Description
Summary:The major biomarker compounds in surface (0.95 meters below seafloor [mbsf]) and deep (579.92 mbsf) sediment samples from the Benguela Current coastal upwelling system off Lüderitz, Namibia (Leg 175 Hole 1084A), have been identified and quantified. Lipids of marine origin (especially long-chain alkenones) dominate the solvent-soluble extracts of both samples with minor constituents of terrestrially derived lipids. The paleoenvironmental significance of the more labile biomarker distributions (sterols) is limited by losses from depth-related diagenetic transformations. These losses may have led to the relative enrichment of the more refractory biomarkers (alkenones) with depth.

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