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Open-File Report 2008–1360

The Search for Braddock’s Caldera—Guidebook for Colorado Scientific Society Fall 2008 Field Trip, Never Summer Mountains, Colorado

By James C. Cole,1 Ed Larson,2 Lang Farmer,2 and Karl S. Kellogg1

1U.S. Geological Survey
2University of Colorado at Boulder (Geology Department)

Abstract

Thumbnail of and link to report PDF (10 MB)

The report contains the illustrated guidebook that was used for the fall field trip of the Colorado Scientific Society on September 6–7, 2008. It summarizes new information about the Tertiary geologic history of the northern Front Range and the Never Summer Mountains, particularly the late Oligocene volcanic and intrusive rocks designated the Braddock Peak complex.

Minor modifications were made in response to technical reviews by D.J. Lidke and C.A. Ruleman (U.S. Geological Survey) regarding clarity and consistency, and text editing by M.A. Kidd. However, the text remains essentially similar to the guidebook that was circulated to the participants on the Colorado Scientific Society 2008 field trip. Several notes were added following the trip (as indicated) to address developments since the guidebook was written.

Version 1.0

Posted December 2008

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Suggested citation:

Cole, James C., Larson, Ed, Farmer, Lang, and Kellogg, Karl S., 2008, The search for Braddock’s caldera—Guidebook for the Colorado Scientific Society Fall 2008 field trip, Never Summer Mountains, Colorado: U.S. Geological Survey Open-File Report 2008–1360, 30 p.


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