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Science 4 March 1960:
Vol. 131. no. 3401, pp. 664 - 665
DOI: 10.1126/science.131.3401.664
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Articles

Geochemistry of Graywackes and Shales

Jon N. Weber 1

1 McMaster University, Hamilton, Ontario, Canada

Sixty-nine graywackes and 33 shales were analyzed spectrographically for 14 minor elements to illustrate the variation of composition within a graywacke bed, between beds in one section, between sections, and between formations. Analyses of several fractions of a graywacke indicate what each contributes chemically to the rock.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)