Computer Science
Scientific paper
Apr 1963
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1963gecoa..27..393h&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 27, Issue 4, pp.393-399
Computer Science
7
Scientific paper
K-bearing mineral components in pelagic sediments from several locations in the North Atlantic show K-Ar age values generally in the range 200-400 m.y., indicating that most of the K is held in stable allogenic mineral structures. The high content of K in the non-car-bonate fraction indicates that it is part of a major component of the sediment. Different size fractions show a minor change in age value. X-ray analysis and studies of age values in eolian material and the components of marine shales suggest that the K-bearing phase is dominantly illite that is in part transported to the oceanic region by wind from continental source regions of unmetamorphosed ancient (mostly Paleozoic) marine shales. Ocean currents may contribute to the transportation and mixing of the material. Differences in age values at depth in a dated bottom core on the equator suggest that there were changes in direction of the transporting medium, or change of source, during glacial stages in the Pleistocene, which may be a basis of stratigraphic correlation. Differences in age values between different regions may provide a basis for following total current movements, or average long-term wind directions.
Fairbairn H. W.
Heezen Bruce C.
Hurley Patrick M.
Pinson W. H.
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