Geology of the Blue Lake Quadrangle, California (Classic Reprint)

Excerpt from Geology of the Blue Lake Quadrangle, California The Blue Lake quadrangle, Humboldt County, California, is largely in the northern Coast Ranges but its eastern portion lies in the edge of the Klamath Mountain Province. Three formations were mapped. The oldest, the Kerr Ranch schist, is a series of quartz-muscovite schists, green schists and semi-schists, formed by low grade regional metamorphism of sandstones, shales, con glomerates, cherts, interbedded volcanics and basic and ultra-basic intrusives. These rocks have been but slightly metamorphosed. The forma tion is pre-franciscan in age and may be equivalent to the Abrams schist of the Klamath Mountains. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.