Organic carbon and nitrogen at DSDP Leg 58 Holes
Cobertura |
MEDIAN LATITUDE: 27.434382 * MEDIAN LONGITUDE: 135.432900 * SOUTH-BOUND LATITUDE: 24.700700 * WEST-BOUND LONGITUDE: 132.774800 * NORTH-BOUND LATITUDE: 29.327500 * EAST-BOUND LONGITUDE: 137.683800 * DATE/TIME START: 1977-12-12T00:00:00 * DATE/TIME END: 1978-01-18T00:00:00 |
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Data(s) |
28/10/1980
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Resumo |
The sediments penetrated on Leg 58 of the Deep Sea Drilling Project in the Philippine Sea represent long periods of geologic time during which depositional conditions apparently remained very constant. Organic carbon and nitrogen contents of the sediments decrease with increasing depth of burial, before leveling off at minimum values of about 0.05 to 0.10 per cent and 0.01 per cent, respectively. The depth at which the minimum values are reached varies from site to site, but ages of sediments corresponding to the minima are all about 5 m.y. We infer that slow bacterial diagenesis is responsible for the gradual depletion of organic carbon and nitrogen. It is likely that the rate of bacterial metabolism is controlled by the rate of diffusion of electron acceptors within the sediments. These results suggest that bacterial ecosystems in deep-water sediments play a much more important role in diagenesis than has previously been thought. |
Formato |
application/zip, 5 datasets |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.821348 doi:10.1594/PANGAEA.821348 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
Supplement to: Waples, Douglas W; Sloan, Jon R (1980): Carbon and nitrogen profiles in deep-sea sediments: New evidence for bacterial diagenesis at great depths of burial. In: deVries Klein, G; Kobayashi, K; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 58, 845-854, doi:10.2973/dsdp.proc.58.126.1980 |
Palavras-Chave | #58-442A; 58-442B; 58-443; 58-444; 58-444A; 58-445; 58-446; 58-446A; Atomic; C/N; Carbon, organic, total; Carbon/Nitrogen ratio; Comment; Deep Sea Drilling Project; Depth; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; Element analyzer CHN (Hewlett-Packard 185-B); Event; Glomar Challenger; Label; Label 2; Leg58; mbsf; Nitrogen, total; North Pacific/BASIN; North Pacific/Philippine Sea/BASIN; ODP sample designation; Sample code/label; Sample code/label 2; TN; TOC |
Tipo |
Dataset |