Computer Science
Scientific paper
Mar 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984gecoa..48..443m&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 48, Issue 3, pp.443-452
Computer Science
8
Scientific paper
Organic matter contained in particulate matter in Lake Michigan waters and sediments has been characterized by C / N ratios and by distributions of biomarker fatty acids, alkanols, sterols, and aliphatic hydrocarbons. Differences in organic constituents of particulate matter from various depths and distances from shore indicate a complex interaction of production, transformation, and destruction of the organic matter contained in sinking particles. Near-surface material contains important contributions of landderived organic matter, presumably of eolian input. Midwater particles have predominantly aquatic organic material of algal origin. At the sediment-water interface, selective suspension of the finer fractions of surficial sediments enriches bottom nepheloid layers with these sediment size classes. As a result, near-bottom particulate matter has an aquatic biomarker character. Organic matter associated with sinking particles undergoes substantial degradation during passage to the bottom of Lake Michigan, and aquatic components are selectively destroyed relative to terrigenous components.
Eaoie B. J.
Leenheer M. J.
Maule S. J.
Meyers Philip A.
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