Petrography and geochemistry of organic matter at DSDP Holes 80-549 and 80-550B
| Cobertura |
MEDIAN LATITUDE: 48.945000 * MEDIAN LONGITUDE: -13.183175 * SOUTH-BOUND LATITUDE: 48.516000 * WEST-BOUND LONGITUDE: -13.438700 * NORTH-BOUND LATITUDE: 49.088000 * EAST-BOUND LONGITUDE: -13.098000 * DATE/TIME START: 1981-06-15T00:00:00 * DATE/TIME END: 1981-06-30T00:00:00 |
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| Data(s) |
26/02/1985
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| Resumo |
Three lower Barremian to middle/upper Cenomanian samples from DSDP Hole 549 and three lower Cenomanian to lower Maestrichtian samples from DSDP Hole 550B were investigated by organic geochemical and organic petrographic methods. The samples came from wells drilled in the area of the Goban Spur in the northeastern Atlantic; they represent gray to greenish gray carbonaceous mud or siltstones from the deeper parts of the Cretaceous sequences penetrated and light-colored chalks from the shallower ones. The total amount of organic carbon is below 1% in all samples; it is especially low in the Cenomanian to Maestrichtian chalks. Terrigenous organic matter predominates; only the Barremian sample shows a moderate number of marine phytoclasts. As indicated by several parameters, the maturity of the organic matter is low, corresponding to about 0.4% vitrinite reflectance. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.808044 doi:10.1594/PANGAEA.808044 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Hartung, Birgitta; Mukhopadhyay, Prasanta K; Rullkötter, Jürgen; Schaefer, Rainer G; Welte, Dietrich Hugo (1985): Petrography and geochemistry of organic matter in Cretaceous sediments from the Goban Spur, Deep Sea Drilling Project Leg 80. In: De Graciansky, PC; Poag, CW; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Gov. Printing Office), 80, 983-991, doi:10.2973/dsdp.proc.80.145.1985 |
| Palavras-Chave | ## = values may be erroneous, because of difficulty in determining precisely the very small amounts of total extract; Alginite; Amorphous organic matter II = biodegraded liptinites; Amorphous organic matter III = biodegraded humic matter; AOM; Carbon, organic, total; Deep Sea Drilling Project; Depth; DEPTH, sediment/rock; DSDP; Element analyser CHN, LECO; Event; Extract TOC; HI, HC/TOC; Hydrogen index, mass HC per unit mass total organic carbon; Inertinite; Label; Liptinite, marine; Liptinite, terrigenous; Liptinite mar; Liptinite terr; Liquid chromatography; Lithology; Lithology/composition/facies; mbsf; Mean vitrinite reflectance of primary particles (lowest reflecting population); ODP sample designation; OI, CO2/TOC; Organic matter, amorphous; Oxygen index, mass CO2 per unit mass total organic carbon; Particulate liptinite A = phyto- and zooclasts (includes dinoflagellates; cf. Van Gijzel, 1980) = aquatic liptinites; Particulate liptinite B, i.e., sporinite, cutinite, resinite, and suberinite = terrestrial liptinites; Primary; Pyrolysis temperature maximum; Recycled; Rock eval pyrolysis (Espitalié et al. 1977); Sample code/label; see reference(s); Stage; Tmax; TOC; Total extract from total organic carbon; Vitr; Vitrinite; Vitrinite reflection; Vitrinite reflection, standard deviation; Vitr refl; Vitr refl std dev |
| Tipo |
Dataset |
