The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.

Metadiabase sills constitute up to 27 percent of a steeply-dipping assemblage of ancient volcanic rocks in Roy and McKenzie townships, Chibougamau region, northwest Quebec. Three rock types are represented. They are, from lower to upper parts of the sills, metapyroxenite, metadiabase, and diabase-pe...

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Bibliographic Details
Main Author:	Horscroft, Frank. D.
Other Authors:	Kranck, E. (Supervisor)
Format:	Others
Language:	en
Published:	McGill University 1957
Subjects:	Geological Sciences.
Online Access:	http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111179

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spelling	ndltd-LACETR-oai-collectionscanada.gc.ca-QMM.1111792014-02-13T03:48:52ZThe petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.Horscroft, Frank. D.Geological Sciences.Metadiabase sills constitute up to 27 percent of a steeply-dipping assemblage of ancient volcanic rocks in Roy and McKenzie townships, Chibougamau region, northwest Quebec. Three rock types are represented. They are, from lower to upper parts of the sills, metapyroxenite, metadiabase, and diabase-pegmatite. Comparison is made with “metadiorite” and “metagabbro” sills in an adjoining area. Chemical and planimetric analyses show that layering of the sills is the result of magmatic differentiation which is characterized by iron-enrichment. The metadiabase sills are similar to the intrusive phase of plateau-type basaltic magma in chemical composition and in trend of differentiation.McGill UniversityKranck, E. (Supervisor)1957Electronic Thesis or Dissertationapplication/pdfenalephsysno: NNNNNNNNNTheses scanned by McGill Library.All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated.Doctor of Philosophy. (Department of Earth Sciences.) http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111179
collection	NDLTD
language	en
format	Others
sources	NDLTD
topic	Geological Sciences.
spellingShingle	Geological Sciences. Horscroft, Frank. D. The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
description	Metadiabase sills constitute up to 27 percent of a steeply-dipping assemblage of ancient volcanic rocks in Roy and McKenzie townships, Chibougamau region, northwest Quebec. Three rock types are represented. They are, from lower to upper parts of the sills, metapyroxenite, metadiabase, and diabase-pegmatite. Comparison is made with “metadiorite” and “metagabbro” sills in an adjoining area. Chemical and planimetric analyses show that layering of the sills is the result of magmatic differentiation which is characterized by iron-enrichment. The metadiabase sills are similar to the intrusive phase of plateau-type basaltic magma in chemical composition and in trend of differentiation.
author2	Kranck, E. (Supervisor)
author_facet	Kranck, E. (Supervisor) Horscroft, Frank. D.
author	Horscroft, Frank. D.
author_sort	Horscroft, Frank. D.
title	The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
title_short	The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
title_full	The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
title_fullStr	The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
title_full_unstemmed	The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.
title_sort	petrology of gabbroic sills in the volcanic series of roy and mckenzie townships, chibougamau region, quebec.
publisher	McGill University
publishDate	1957
url	http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111179
work_keys_str_mv	AT horscroftfrankd thepetrologyofgabbroicsillsinthevolcanicseriesofroyandmckenzietownshipschibougamauregionquebec AT horscroftfrankd petrologyofgabbroicsillsinthevolcanicseriesofroyandmckenzietownshipschibougamauregionquebec
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The petrology of gabbroic sills in the volcanic series of Roy and McKenzie Townships, Chibougamau Region, Quebec.

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