Mathematics – Logic
Scientific paper
Feb 1973
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973gecoa..37..225n&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 37, Issue 2, pp.225-238
Mathematics
Logic
17
Scientific paper
All of the major deep-water sedimentary provinces of the Gulf of Mexico were sampled with 48 piston cores, representative of the late Quaternary. The amount (per cent) and 5 C 13 of the organic carbon in the sediment was measured at intervals within each core. Graphs of C 13 versus depth for each core give an indication of the sedimentological history of the Gulf. They show the extent of terrestrial influence on the Gulf during the late Pleistocene. Changes in C 13 of up to 6.0%.(from ~ -19%.to -25%. vs NBS-20) were measured across the Pleistocene-Holocene boundary in cores from the abyssal plain. These changes are consistent with a model wherein varying amounts of land-derived organic carbon were transported to the Gulf basin during glacial periods. By comparing graphs for cores from different areas, it was concluded that the major parameter affecting the C 13 values of organic carbon from marine sediments is the relative amount of terrestrial material present in the sediment. The maximum possible effect of the Pleistocene-Holocene temperature change in the Gulf was determined to be ~1.0%, if such an effect occurs at all.
Behrens E. W.
Newman Juanita W.
Parker Patrick L.
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