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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 58 (1974)

Issue: 1. (January)

First Page: 79

Last Page: 105

Title: Tectonic Evolution of Previous HitAlaskaNext Hit

Author(s): H. Glenn Richards (2)

Abstract:

Tectonic interpretations of Previous HitAlaskaNext Hit in the past have relied largely on observable structural data. Recent detailed study of known stratigraphic information has led to an alternate picture of Alaskan tectonogenesis. By relating sedimentary facies to tectonic environments a postulated geologic history from the Early Cambrian through Late Cretaceous has been reconstructed. This history indicates that the Previous HitAlaskaNext Hit area may be composed of two continental (sialic) plates that were once separate. These plates drifted toward each other during the Paleozoic and early Mesozoic, finally impinging and coalescing in Late Jurassic-Early Cretaceous time. Each of the plates involved can be subdivided further into two segments. These segments apparently had somewhat different geologic histor es during the formation of the present-day Previous HitAlaskaTop area.

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