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Structural geology of western part of Lemhi Range, east-central Idaho

Professional Paper 1659

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Abstract

The Poison Creek Anticline is a major fold that occupies a large part of the western part of the Lemhi Range. The fold is now broken by normal faults, but removal of displacement on the normal faults permitted reconstruction of the anticline. The fold formed during late Mesozoic compressional deformation in the hinterland of the Cordilleran thrust belt. It is in the hanging wall of the Poison Creek thrust fault, a major fault in east-central Idaho, that displaced Proterozoic strata over lower Paleozoic rocks.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Structural geology of western part of Lemhi Range, east-central Idaho
Series title:
Professional Paper
Series number:
1659
Edition:
-
Year Published:
2002
Language:
ENGLISH
Description:
33 p.