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...

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Bibliographic Details
Main Authors: Chris Cornford, Organische Geochemie, Kernforschungsanlage Jülich
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
North Atlantic
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.484.6770
http://www.deepseadrilling.org/50/volume/dsdp50_22.pdf
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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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