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Ancient granite gneiss in the Black Hills, South Dakota

Science

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Abstract

Granite gneiss, with an age of approximately 2.5 billion years, in the Black Hills, South Dakota , provides a link betweeen ancient rocks in western Wyoming and Montana and in eastern North and South Dakota and Minnesota. The discovery suggests that early Precambrian rocks covered an extensive area in northcentral United States and were not restricted to several small nuclei.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Ancient granite gneiss in the Black Hills, South Dakota
Series title:
Science
Volume
145
Issue:
3631
Year Published:
1964
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
479
Last page:
481
Number of Pages:
3