Analysis of organic matter from DSDP Leg 81 Holes ...

• Main Authors: Kaltenback, A J, Guennel, G K, Lyons, William B, Moore, Andrew, Patton, J W
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1984
• Subjects: Deep Sea Drilling Project DSDP; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.807149; https://doi.pangaea.de/10.1594/PANGAEA.807149

Organic geochemical and visual kerogen analyses were carried out on approximately 50 samples from Leg 81 (Rockall Plateau, North Atlantic). The sediments are from four sites (Sites 552-555), Pleistocene to Paleocene in age, and represent significantly different depositional environments and sources of organic matter. The Pleistocene glacial-interglacial cycles show differences in sedimentary organic matter based on Rock-Eval pyrolysis, organic phosphorus, and pyrolysis/mass-spectrometry analyses. Glacial samples contain more organic carbon, with a larger proportion of reworked organic matter. This probably reflects increased erosion of continental and shelf areas as a result of low sea level stands. Inter glacial samples contain a larger proportion of marine organic matter as determined by organic phosphorus and pyrolysis analyses. This immature, highly oxidized marine organic matter may be associated with the skeletal organic matrix of calcareous organisms. In addition, Rock-Eval data indicate no ... : Supplement to: Kaltenback, A J; Guennel, G K; Lyons, William B; Moore, Andrew; Patton, J W (1984): Analysis of organic matter from Leg 81 (Rockall Plateau). In: Roberts, DG; Schnittker, D; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 81, 807-825 ...