Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories
Granitic intrusives and a zoned gabbroic dyke situated within the Back River Volcanic Complex were mapped and studied. Petrography and geochemical analyses were performed on selected specimens. Chemican variation diagrams suggest that the granites may have been derived from the fractional crystalliz...
Main Author: | |
---|---|
Other Authors: | , |
Format: | Thesis |
Language: | English |
Published: |
1978
|
Subjects: | |
Online Access: | http://hdl.handle.net/11375/24436 |
id |
ftmcmaster:oai:macsphere.mcmaster.ca:11375/24436 |
---|---|
record_format |
openpolar |
spelling |
ftmcmaster:oai:macsphere.mcmaster.ca:11375/24436 2024-09-15T17:56:52+00:00 Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories Beaumont, D. Louise Clifford, P. M. Geology 1978-04 http://hdl.handle.net/11375/24436 en eng http://hdl.handle.net/11375/24436 petrology geochemistry igneous back river volcanic northwest territories Thesis 1978 ftmcmaster 2024-06-26T04:35:26Z Granitic intrusives and a zoned gabbroic dyke situated within the Back River Volcanic Complex were mapped and studied. Petrography and geochemical analyses were performed on selected specimens. Chemican variation diagrams suggest that the granites may have been derived from the fractional crystallization of a single parent magma. In order of decreasing age, these granitic units are defined as follows: 1. Hornblende Quartz Syenite 2. Granite 3. Quartz Monzodiorite A zoned gabbro/quartz gabbro dyke cuts the granites. Pyroxene and plagioclase are the dominant minerals of this dyke, and are found to vary antipathetically throughout the central portions of the dyke. Chemical studies of this system suggest that the zoning may be the result of a series of multiple injections from different source magmas. Thesis Bachelor of Science (BSc) Thesis Back River Northwest Territories MacSphere (McMaster University) |
institution |
Open Polar |
collection |
MacSphere (McMaster University) |
op_collection_id |
ftmcmaster |
language |
English |
topic |
petrology geochemistry igneous back river volcanic northwest territories |
spellingShingle |
petrology geochemistry igneous back river volcanic northwest territories Beaumont, D. Louise Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
topic_facet |
petrology geochemistry igneous back river volcanic northwest territories |
description |
Granitic intrusives and a zoned gabbroic dyke situated within the Back River Volcanic Complex were mapped and studied. Petrography and geochemical analyses were performed on selected specimens. Chemican variation diagrams suggest that the granites may have been derived from the fractional crystallization of a single parent magma. In order of decreasing age, these granitic units are defined as follows: 1. Hornblende Quartz Syenite 2. Granite 3. Quartz Monzodiorite A zoned gabbro/quartz gabbro dyke cuts the granites. Pyroxene and plagioclase are the dominant minerals of this dyke, and are found to vary antipathetically throughout the central portions of the dyke. Chemical studies of this system suggest that the zoning may be the result of a series of multiple injections from different source magmas. Thesis Bachelor of Science (BSc) |
author2 |
Clifford, P. M. Geology |
format |
Thesis |
author |
Beaumont, D. Louise |
author_facet |
Beaumont, D. Louise |
author_sort |
Beaumont, D. Louise |
title |
Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
title_short |
Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
title_full |
Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
title_fullStr |
Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
title_full_unstemmed |
Petrology and Geochemistry of Some Igneous Intrusives in the Back River Volcanic Complex, District of MacKenzie, Northwest Territories |
title_sort |
petrology and geochemistry of some igneous intrusives in the back river volcanic complex, district of mackenzie, northwest territories |
publishDate |
1978 |
url |
http://hdl.handle.net/11375/24436 |
genre |
Back River Northwest Territories |
genre_facet |
Back River Northwest Territories |
op_relation |
http://hdl.handle.net/11375/24436 |
_version_ |
1810433055597264896 |