Excerpt from Southern Vancouver Island Saanich granodiorite and quartz diorite.. Distribution Lithological characters.. Granodiorite and quartz diorite.. Microscopic Alteration Granite Microscopic Apophysal Segregations or inclusions Microscopic Contact and hybrid phases Quartz gabbro Contact or granodiorite porphyrites Quartz-feldspar porphyrite microscopio Alteration Feldspar porphyrite Dykes Augite bearing andesite Distribution Lithological characters Microscopic Andesite porphyrite Microscopic Structural relations of batholithic and dyke intrusives Internal Relation of types to each other External Relation to older formations Relation to younger formations Mode of origin of batholithic and dyke intrusives Age and correlation Sooke gabbro Distribution Lithological characters Amphibole Macroscopic Microscopic Fine grained augite gabbro Ophitic gabbro Columnar textured gabbro Microscopic Apophysal phases Olivine anorthosite (allivalite) 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.