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Late Oligocene to present contractional structure in and around the Susitna basin, Alaska—Geophysical evidence and geological implications

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Richard W. Saltus, Richard G. Stanley, Peter J. Haeussler, James V. Jones III, Christopher J. Potter, and Kristen A. Lewis, 2016, Late Oligocene to present contractional structure in and around the Susitna basin, Alaska—Geophysical evidence and geological implications: Geosphere, v. 12, iss. 5.

Summary

The Cenozoic Susitna basin lies within an enigmatic lowland surrounded by the Central Alaska Range, Western Alaska Range (including the Tordrillo Mountains), and Talkeetna Mountains in south-central Alaska. Some previous interpretations show normal faults as the defining structures of the basin (e.g., Kirschner, 1994). However, analysis of new and existing geophysical data shows predominantly (Late Oligocene to present) thrust and reverse fault geometries in the region, as previously proposed by Hackett (1978). A key example is the Beluga Mountain fault where a 50-mGal gravity gradient, caused by the density transition from the igneous bedrock of Beluga Mountain to the >4-km-thick Cenozoic sedimentary section of Susitna basin, spans [...]

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Type Scheme Key
local-index unknown 70184965
local-pk unknown 70184965
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1130/GES01279.1
series unknown Geosphere

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citationTypeArticle
journalGeosphere
languageEnglish
parts
typevolume
value12
typeissue
value5

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