General descriptions, organic contents and geolipid ratios at DSDP Leg 72 Holes
| Cobertura |
MEDIAN LATITUDE: -29.439680 * MEDIAN LONGITUDE: -36.893482 * SOUTH-BOUND LATITUDE: -30.946800 * WEST-BOUND LONGITUDE: -38.041200 * NORTH-BOUND LATITUDE: -26.238700 * EAST-BOUND LONGITUDE: -35.285300 * DATE/TIME START: 1980-03-01T00:00:00 * DATE/TIME END: 1980-03-30T00:00:00 |
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| Data(s) |
20/05/1983
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| Resumo |
Organic matter in sediments from Sites 515, 516, and 517 reflects a history of low marine productivity and of oxygenated bottom waters in the western South Atlantic since the Pliocene. Organic carbon contents are low, averaging 0.26% of sediment weight. Distributions of n-alkanes, n-alkanols, and n-alkanoic acids show evidence of microbial reworking, and n-alkanes contain important terrigenous contributions, presumably of eolian origin. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.811798 doi:10.1594/PANGAEA.811798 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Meyers, Philip A; Dunham, Keith W (1983): Organic geochemistry of Quaternary sediments from Deep Sea Drilling Project Leg 72, South Atlantic Ocean. In: Barker, PF; Carlson, RL; Johnson, DA; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 83, 1983, doi:10.2973/dsdp.proc.72.140.1983 |
| Palavras-Chave | #(A odd)/(A even); (even n-C)/(odd n-C) n-alkanols; (even n-C)/(odd n-C) n-fatty acids; # = ± standard deviation of 3 determinations; # = mean of 3 determinations; 72-515; 72-515B; 72-516A; 72-517; Alkanes, n-C29/n-C17 ratio; Atomic; C/N; C29/C17; CaCO3; Calcium carbonate; Calculated, see reference(s); Carbon, organic, total; Carbon, organic, total, standard deviation; Carbon/Nitrogen ratio; Deep Sea Drilling Project; Depth; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Element analyzer CHN (Hewlett-Packard 185-B); Epoch; Event; Geolipid fraction; Glomar Challenger; ID; Identification; Label; Leg72; mbsf; n-C26/n-C16; n-C26/n-C16 Alk. Acid; n-C26/n-C16 alkanoic acids ratio; n-C26/n-C16 fatty acids ratio; ODP sample designation; Pr/C17; Pr/Phy; Pristane/n-heptadecane ratio; Pristane/Phytane ratio; Sample code/label; see reference(s); South Atlantic/BASIN; South Atlantic/CONT RISE; South Atlantic/FLANK; Sum even numbered/sum odd numbered n-alkanols ratio; Sum even numbered/sum odd numbered n-fatty acids ratio; Sum odd numbered/sum even numbered n-alkanes ratio; TOC; TOC std dev |
| Tipo |
Dataset |
