Abstract

The study of the igneous complex of which the Marysville rocks form a part was begun by the writer in 1928, when he first recognized the acid lavas that form the summit of the Blue Hills east of Taggerty, and practically coincide with the edge of the State Forest Reserve extending eastwards from there among the Cerbereans. Although only a small part of the truly enormous mass of igneous rocks was dealt with at that time, it was clear that interesting stratigraphical and petrological results might be obtained by a more detailed survey, and field work was therefore undertaken at Marysville, some 15 miles south of Taggerty, in 1929.

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