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Metamorphic facies map of Southeastern Alaska; distribution, facies, and ages of regionally metamorphosed rocks

Professional Paper 1497-D

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Abstract

Nearly all of the bedrock in Southeastern Alaska has been metamorphosed, much of it under medium-grade conditions during metamorphic episodes that were associated with widespread plutonism. The oldest metamorphisms affected probable arc rocks near southern Prince of Wales Island and occurred during early and middle Paleozoic orogenies. The predominant period of metamorphism and associated plutonism occurred during Early Cretaceous to early Tertiary time and resulted in the development of the Coast plutonic-metamorphic complex that extends along the inboard half of Southeastern Alaska. Middle Tertiary regional thermal metamorphism affected a large part of Baranof Island.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Metamorphic facies map of Southeastern Alaska; distribution, facies, and ages of regionally metamorphosed rocks
Series title:
Professional Paper
Series number:
1497
Chapter:
D
Edition:
-
Year Published:
1996
Language:
ENGLISH
Description:
p. D1-D42; 2 plates in pocket