22. PETROLOGY OF ORGANIC MATTER, DEEP SEA DRILLING PROJECT SITE 415 and 416, MOROCCAN BASIN, EASTERN NORTH ATLANTIC
Nine samples were analyzed using reflected-light microscopy tech-niques to determine the type and maturity of the sedimentary organic matter. The vitrinite-huminite reflectance values reached about 0.45 per cent at terminal depth (1624 m) indicating an immature sediment section. A high amorphous (aq...
Main Authors: | , , |
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Format: | Text |
Language: | English |
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.484.6770 http://www.deepseadrilling.org/50/volume/dsdp50_22.pdf |
Summary: | Nine samples were analyzed using reflected-light microscopy tech-niques to determine the type and maturity of the sedimentary organic matter. The vitrinite-huminite reflectance values reached about 0.45 per cent at terminal depth (1624 m) indicating an immature sediment section. A high amorphous (aquatic) kerogen content in alloch-thonous upper Oligocene (Site 415) and Cenomanian and Hauteriv-ian (Sites 415, 416) sediments suggests their deposition under oxygen-minimum conditions prior to transport from the shelf-edge environ-ments. The Valanginian and Tithonian sediments contain small amounts of dominantly vitrinitic (terrestrial) kerogen which, as at Site 398, is in part recycled organic matter. |
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