Organic geochemistry from different DSDP Holes in the subtropical South Atlantic Ocean
| Cobertura |
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 |
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| Data(s) |
30/05/1984
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| Resumo |
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. |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.761244 doi:10.1594/PANGAEA.761244 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Keswani, Sushiel R; Dunham, Keith W; Meyers, Philip A (1984): Organic geochemistry of late Cenozoic sediments from the subtropical South Atlantic Ocean. Marine Geology, 61(1), 25-42, doi:10.1016/0025-3227(84)90106-3 |
| Palavras-Chave | #(even n-C)/(odd n-C) alkanoic acids; (even n-C)/(odd n-C) n-alkanols; <2 µm, >9 phi; 72-515; 72-515B; 72-516; 72-516A; 72-517; 74-525A; 74-528; 74-528A; 75-530B; 75-532; Acc rate <2 µm; Acc rate TOC; Accumulation rate, clay < 2 µm; Accumulation rate, total organic carbon; Age; AGE; Alcohols, n-C26/n-C16 ratio; Aliphatic hydrocarbons, n-C29/n-C17 ratio; Assumes dry sediment density of 2.7 g/cm**3; Assumes organic matter density of 0.9 g/cm**3; Atomic; C/N; CaCO3; Calcium carbonate; Calculated; Carbon, organic, total; Carbon/Nitrogen ratio; DBD; Deep Sea Drilling Project; Density, dry bulk; Depth; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Element analyser CHN; Epoch; Event; Glomar Challenger; Label; Leg72; Leg74; Leg75; mbsf; n-C26/n-C16 Alco; n-C26/n-C16 Alk. Acid; n-C26/n-C16 alkanoic acids ratio; n-C29/n-17; ODP sample designation; over range of C12-C32 n-alkanoic acids; over range of C15-C28 n-alkanols; Poros; Porosity; Pr/C17; Pr/Phy; Pristane/n-heptadecane ratio; Pristane/Phytane ratio; Sample code/label; Sedimentation rate; Sed rate; Size fraction < 0.002 mm, > 9 phi, clay; South Atlantic; South Atlantic/BASIN; South Atlantic/CONT RISE; South Atlantic/CREST; South Atlantic/FLANK; South Atlantic/RIDGE; Sum even numbered/sum odd numbered alkanoic acids ratio; Sum even numbered/sum odd numbered n-alkanols ratio; TOC |
| Tipo |
Dataset |
