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Petrographic and geochemical evidence for crustal contamination in some Keweenawan flows and dykes from Mamainse Point, Ontario

N. W. D. Massey
Petrographic and geochemical evidence for crustal contamination in some Keweenawan flows and dykes from Mamainse Point, Ontario
The Canadian Mineralogist (August 1980) 18, Part 3: 271-274

Abstract

Partially resorbed plagioclase xenocrysts, subrounded to irregular glassy matrix domains, and spherical glass globules are reported in some flows and dykes from the Mamainse Point formation. The same samples show anomalous trace element behaviour, compared with normal flows. These features are explained by the incorporation and incomplete mixing into the basalt host of crustally derived felsic melts.


ISSN: 0008-4476
EISSN: 1499-1276
Coden: CAMIA6
Serial Title: The Canadian Mineralogist
Serial Volume: 18, Part 3
Title: Petrographic and geochemical evidence for crustal contamination in some Keweenawan flows and dykes from Mamainse Point, Ontario
Author(s): Massey, N. W. D.
Pages: 271-274
Published: 198008
Text Language: English
Summary Language: French
Publisher: Mineralogical Association of Canada, Ottawa, ON, Canada
References: 13
Accession Number: 1981-052027
Categories: Igneous and metamorphic petrologyGeochemistry of rocks, soils, and sediments
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N47°00'00" - N47°00'00", W84°00'00" - W84°00'00"
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 1981
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