Abstract

Abstract At three localities in the Sidi-Saied-Maachou area, a complex of volcanic rocks has been identified in the thick, otherwise uniform series of Acadian (Cambrian) green schists of the plateau region of Morocco, which is considered to represent a submarine volcano. Purplish schists, layers of organic limestone, and pyroclastic material, laid down in deep water, are cut by vertical dikes which fed sills and submarine flows of basic lava. The eruption was calm, resembling, on a much smaller scale, the emplacement of greenstones in geosynclines.

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