Geochemical and petrographic data for intrusions peripheral to the Big Timber Stock, Crazy Mountains, Montana

Data Series 895
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Abstract

The Paleocene Fort Union Formation hosts a compositionally diverse array of Eocene plugs, dikes, and sills arrayed around the Eocene Big Timber stock in the Crazy Mountains of south-central Montana. The geochemistry and petrography of the sills have not previously been characterized or interpreted. The purpose of this report is (1) to present available geochemical and petrographic data for several dozen samples of these rocks and (2) to provide a basic interpretive synthesis of these data.

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Publication type Report
Publication Subtype USGS Numbered Series
Title Geochemical and petrographic data for intrusions peripheral to the Big Timber Stock, Crazy Mountains, Montana
Series title Data Series
Series number 895
DOI 10.3133/ds895
Year Published 2015
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Central Mineral and Environmental Resources Science Center
Description Report: iv, 19 p.; 2 Appendices
Country United States
State Montana
Other Geospatial Crazy Mountains
Online Only (Y/N) Y
Additional Online Files (Y/N) N
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