Geology of the Mount Garibaldi Map-Area, Southwestern British Columbia, Canada

Research Article| February 01, 1958 GEOLOGY OF THE MOUNT GARIBALDI MAP-AREA, SOUTHWESTERN BRITISH COLUMBIA, CANADA: PART I: IGNEOUS AND METAMORPHIC ROCKS W. H MATHEWS W. H MATHEWS THE UNIVERSITY OF BRITISH COLUMBIA, VANCOUVER, BRITISH COLUMBIA Search for other works by this author on: GSW Google Scholar Author and Article Information W. H MATHEWS THE UNIVERSITY OF BRITISH COLUMBIA, VANCOUVER, BRITISH COLUMBIA Publisher: Geological Society of America First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1958, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1958) 69 (2): 161–178. https://doi.org/10.1130/0016-7606(1958)69[161:GOTMGM]2.0.CO;2 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation W. H MATHEWS; GEOLOGY OF THE MOUNT GARIBALDI MAP-AREA, SOUTHWESTERN BRITISH COLUMBIA, CANADA: PART I: IGNEOUS AND METAMORPHIC ROCKS. GSA Bulletin 1958;; 69 (2): 161–178. doi: https://doi.org/10.1130/0016-7606(1958)69[161:GOTMGM]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Mount Garibaldi map-area is in the southern part of the plutonic complex comprising the Coast Mountains of British Columbia.The oldest rocks of the map-area are metavolcanic and minor metasedimentary rocks of unknown age and structure. These are extensively invaded by a quartz diorite batholith, the earliest of the plutonic masses, which displays an unfoliated core, a margin with highly developed secondary foliation, and an intervening zone of primary foliation. Bedded rocks at least 20,000 feet thick, principally clastic sediments derived in part from the batholithic rocks, occur in fault blocks north of Garibaldi Lake. The rocks of one fault block rest uncomformably on the older quartz diorites and contain Upper Cretaceous fossils; those of the other fault blocks are thought to be slightly younger than the fossil-bearing beds. The bedded rocks have in turn been invaded by later quartz diorites which are partly contemporaneous with and partly later than the block faulting. Two post-tectonic and presumably post-Upper Cretaceous batholiths lie partly within the map-area. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.