Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories
An intrusive complex in the Coppermine River Area, Northwest Territories appears to be a greatly elongated lopolith approximately 5 miles wide and 60 miles long. Multiple intrusion and magmatic differentiation have combined to produce layers of rocks which range in composition from dunite to granoph...
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University of British Columbia
1960
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ftunivbritcolcir:oai:circle.library.ubc.ca:2429/40740 2023-05-15T15:56:42+02:00 Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories Tedlie, William Donald 1960 http://hdl.handle.net/2429/40740 eng eng University of British Columbia For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Geology -- Northwest Territories -- Coppermine River Text Thesis/Dissertation 1960 ftunivbritcolcir 2019-10-15T18:08:14Z An intrusive complex in the Coppermine River Area, Northwest Territories appears to be a greatly elongated lopolith approximately 5 miles wide and 60 miles long. Multiple intrusion and magmatic differentiation have combined to produce layers of rocks which range in composition from dunite to granophyre within the lopolith. The acid rocks of the complex were emplaced as a number of separate injections of magma after the crystallization and cooling of the basic and ultrabasic rocks. The structural relations of the acid and basic rocks indicate that the acid intrusions were accompanied by faulting and subsidence of a part of the northern end of the lopolith. A prominent textural feature of the granophyre, an oscillatory mantling of nuclei of graphic quartz and potash feldspar by quartz-free potash feldspar and plagioclase, is believed to be the result of fluctuations in water vapour pressure during crystallization of the magma. The fragments in a breccia cemented by granophyre were probably, in part, formed by fault movements which accompanied the intrusion of the acid magma. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate Thesis Coppermine River Northwest Territories University of British Columbia: cIRcle - UBC's Information Repository Northwest Territories |
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Open Polar |
collection |
University of British Columbia: cIRcle - UBC's Information Repository |
op_collection_id |
ftunivbritcolcir |
language |
English |
topic |
Geology -- Northwest Territories -- Coppermine River |
spellingShingle |
Geology -- Northwest Territories -- Coppermine River Tedlie, William Donald Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
topic_facet |
Geology -- Northwest Territories -- Coppermine River |
description |
An intrusive complex in the Coppermine River Area, Northwest Territories appears to be a greatly elongated lopolith approximately 5 miles wide and 60 miles long. Multiple intrusion and magmatic differentiation have combined to produce layers of rocks which range in composition from dunite to granophyre within the lopolith. The acid rocks of the complex were emplaced as a number of separate injections of magma after the crystallization and cooling of the basic and ultrabasic rocks. The structural relations of the acid and basic rocks indicate that the acid intrusions were accompanied by faulting and subsidence of a part of the northern end of the lopolith. A prominent textural feature of the granophyre, an oscillatory mantling of nuclei of graphic quartz and potash feldspar by quartz-free potash feldspar and plagioclase, is believed to be the result of fluctuations in water vapour pressure during crystallization of the magma. The fragments in a breccia cemented by granophyre were probably, in part, formed by fault movements which accompanied the intrusion of the acid magma. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate |
format |
Thesis |
author |
Tedlie, William Donald |
author_facet |
Tedlie, William Donald |
author_sort |
Tedlie, William Donald |
title |
Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
title_short |
Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
title_full |
Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
title_fullStr |
Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
title_full_unstemmed |
Acid rocks associated with an intrusive complex Coppermine River area, Northwest Territories |
title_sort |
acid rocks associated with an intrusive complex coppermine river area, northwest territories |
publisher |
University of British Columbia |
publishDate |
1960 |
url |
http://hdl.handle.net/2429/40740 |
geographic |
Northwest Territories |
geographic_facet |
Northwest Territories |
genre |
Coppermine River Northwest Territories |
genre_facet |
Coppermine River Northwest Territories |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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1766392093346889728 |