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Potassium-argon and lead-alpha ages of plutonic rocks, Bokan Mountain area, Alaska

Science

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Abstract

Most of the granitic rocks in the Bokan Mountain area, southeastern Alaska, are early Paleozoic (probably Ordovician) judged by potassium-argon and lead-alpha age measurements. The Bokan Mountain Granite, the youngest intrusive unit in the area, belongs to a Mesozoic plutonic episode. These age measurements are the first direct evidence for the emplacement of early Paleozoic granitic intrusive rocks close to the Pacific margin of North America.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Potassium-argon and lead-alpha ages of plutonic rocks, Bokan Mountain area, Alaska
Series title:
Science
Volume
145
Issue:
3633
Year Published:
1964
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
705
Last page:
707
Number of Pages:
3