Publication Date

1980

Document Type

Dissertation/Thesis

First Advisor

Berg, Jonathan H.

Degree Name

M.S. (Master of Science)

Department

Department of Geology

LCSH

Mineralogy--Newfoundland--Labrador||Mineralogical chemistry||Rocks--Thermal properties||Petrology--Newfoundland--Labrador

Abstract

Mafic granulites surrounding the Kiglapait layered intrusion Labrador, were previously thought to represent a contaminated chilled margin (Outer Border Zone) of the intrusion. Mineral chemistry data combined with petrographic observations and bulk chemical analyses suggest that the OBZ mafic granulites were meta metamorphosed by the emplacement of the intrusion and are probably petrogenetically unrelated to it. Petrographic study suggests that systematic appearances and disappearances of various minerals occur in the mafic granulites as the intrusion is approached. These are: 1) actinolite out 2 ) sphene out 3) epidote - calcite out 4) chlorite out 5) clinopyroxene in 6 ) quartz out 7) orthopyroxene in 8 ) olivine in 9) magnetite in 10) hornblende - ilmenite out

Comments

Includes bibliographical references.||Includes illustrations.

Extent

ix, 155 pages

Language

eng

Publisher

Northern Illinois University

Rights Statement

In Copyright

Rights Statement 2

NIU theses are protected by copyright. They may be viewed from Huskie Commons for any purpose, but reproduction or distribution in any format is prohibited without the written permission of the authors.

Media Type

Text

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