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Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA

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Karen Lund, Karl V. Evans, and John N. Alienikoff, 2011, Chapter 39 The Edwardsburg Formation and related rocks, Windermere Supergroup, central Idaho, USA: Memoir of the Geological Society of America, v. 36.

Summary

In central Idaho, Neoproterozoic stratified rocks are engulfed by the Late Cretaceous Idaho batholith and by Eocene volcanic and plutonic rocks of the Challis event. Studied sections in the Gospel Peaks and Big Creek areas of west-central Idaho are in roof pendants of the Idaho batholith. A drill core section studied from near Challis, east-central Idaho, lies beneath the Challis Volcanic Group and is not exposed at the surface. Metamorphic and deformational overprinting, as well as widespread dismembering by the younger igneous rocks, conceals many primary details. Despite this, these rocks provide important links for regional correlations and have produced critical geochronological data for two Neoproterozoic glacial periods in the [...]

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local-index unknown 70159146
local-pk unknown 70159146
series unknown Memoir of the Geological Society of America

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journalMemoir of the Geological Society of America
parts
typevolume
value36
languageEnglish
citationTypeArticle

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