Physics
Scientific paper
Mar 1961
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1961gecoa..22..200w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 22, Issue 2-4, pp.200-243
Physics
4
Scientific paper
Thirty-one Normanskill greywackes and twenty-four Quebec group (Charny formation) arkoses have been analysed spectrographically to determine the concentrations of Ag, B, Ba, Be, Co, Cr, Cu, Ga, La, Mg, Mn, Mo, Ni, Sc, Sr, Ti, V, Y and Zr, of which Ag, Be, La, Mo and Y were rarely or never detected. The analyses indicate the nature and magnitude of chemical variations within turbidite beds, between beds in a stratigraphic section, between sections and between formations. Despite the grading of turbidite strata, variation in concentration from the top to the bottom of a bed is small except for zirconium which is relatively concentrated at the base. Variation between beds and between sections is greatest as a result of the relative distances of the samples from successive turbidity flows and variation between formations is small, reflecting the uniformity of turbidite sediments derived from many terrestrial rock types with little chemical differentiation.
Middleton Gerard V.
Weber Jon N.
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