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Keswani, Sushiel R; Dunham, Keith W; Meyers, Philip A (1984): Organic geochemistry from different DSDP Holes in the subtropical South Atlantic Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.761244, Supplement to: Keswani, SR et al. (1984): Organic geochemistry of late Cenozoic sediments from the subtropical South Atlantic Ocean. Marine Geology, 61(1), 25-42, https://doi.org/10.1016/0025-3227(84)90106-3

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Abstract:
Organic matter has been characterized in samples of Pleistocene, Pliocene, and Miocene sediments from seven Deep Sea Drilling Project sites in the subtropical South Atlantic Ocean. 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-lean 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.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -25.472848 * Median Longitude: -13.681335 * South-bound Latitude: -30.946800 * West-bound Longitude: -38.041200 * North-bound Latitude: -19.187700 * East-bound Longitude: 10.518800
Date/Time Start: 1980-03-01T00:00:00 * Date/Time End: 1980-08-20T00:00:00
Event(s):
72-515 * Latitude: -26.238800 * Longitude: -36.502800 * Date/Time: 1980-03-01T00:00:00 * Elevation: -4250.0 m * Penetration: 55.5 m * Recovery: 5.45 m * Location: South Atlantic/BASIN * Campaign: Leg72 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 2 cores; 11 m cored; 6.5 m drilled; 49.5 % recovery
72-515B * Latitude: -26.238700 * Longitude: -36.503200 * Date/Time: 1980-03-01T00:00:00 * Elevation: -4252.0 m * Penetration: 636.4 m * Recovery: 428.6 m * Location: South Atlantic/BASIN * Campaign: Leg72 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 57 cores; 541.4 m cored; 94.9 m drilled; 79.2 % recovery
72-516 * Latitude: -30.276300 * Longitude: -35.285200 * Date/Time: 1980-03-11T00:00:00 * Elevation: -1313.0 m * Penetration: 183.3 m * Recovery: 148.1 m * Location: South Atlantic/CONT RISE * Campaign: Leg72 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 166.1 m cored; 17.2 m drilled; 89.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Keswani, SR; Dunham, KW; Meyers, PA (1984): (Table 1) General description and organic contents of late Cenozoic sediment samples from different DSDP Holes in the subtropical South Atlantic Ocean. https://doi.org/10.1594/PANGAEA.761231
  2. Keswani, SR; Dunham, KW; Meyers, PA (1984): (Table 3) Ratios of geolipid components from different DSDP Holes in the subtropical South Atlantic Ocean. https://doi.org/10.1594/PANGAEA.761239
  3. Keswani, SR; Dunham, KW; Meyers, PA (1984): (Table 2) Sedimentological characteristics and mass accumulation rates for clay-size fractions and organic carbon of sediments from different DSDP Holes in the subtropical South Atlantic Ocean. https://doi.org/10.1594/PANGAEA.761234