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Geology of the Strachan Creek area, British Columbia

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dc.contributor.author Lee, Randolph
dc.date.accessioned 2012-01-20T00:58:10Z
dc.date.available 2012-01-20T00:58:10Z
dc.date.copyright 1958
dc.date.issued 2012-01-19
dc.identifier.uri http://hdl.handle.net/2429/40195
dc.description.abstract The Strachan Creek area is on the east shore of Howe Sound about three miles north of the town of Horseshoe Bay, B.C. The rocks of the area consist of migmatite of the Bowen Island group, volcanic rocks of the Gambier group, plutonic rocks of the Coast Intrusions, and late basic and acidic dykes. These rocks are described and their relationships discussed, A striking feature of the Strachan Creek area is the banding in the diorite, one of the units of the Coast Intrusions. Each complete band is a couplet composed of one light- and one dark-coloured layer, one layer grading into the other. The light-coloured layer is composed mostly of plagioclase, whereas the dark-coloured layer is composed mostly of hornblende and magnetite. Generally, the ratio of hornblende (plus magnetite) to plagioclase decreases downward from a sharp contact, the couplets thus resembling inverted "graded-bedding". The author tentatively concludes that the banding in the diorite originated by a process of differentiation and crystal rising within a cooling diorite magma. en_US
dc.language.iso eng en_US
dc.publisher University of British Columbia en
dc.relation.ispartofseries UBC Retrospective Theses Digitization Project [http://www.library.ubc.ca/archives/retro_theses/] en
dc.subject Geology -- B.C. -- Strachan Creek en_US
dc.title Geology of the Strachan Creek area, British Columbia en_US
dc.type Electronic Thesis or Dissertation en
dc.degree.name Master of Science - MSc en_US
dc.degree.discipline Geological Sciences en_US
dc.degree.grantor University of British Columbia en
dc.degree.campus UBCV en_US
dc.description.scholarlevel Graduate en

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