National Geologic Map Database
General Information
- Title: Preliminary isotopic (K-Ar and (super 40) Ar/ (super 39) Ar) age determinations from selected Late Cretaceous and Tertiary igneous rocks in Montana [abs.]
- Author(s): Harlan, S.S., and Mehnert, H.H.
- Publishing Organization: Montana Bureau of Mines and Geology
- Series and Number: Special Publication no. 100 [p. 136-137]
- Larger Work: Baker, D.W., and Berg, R.B., eds., Guidebook of the central Montana alkalic province; geology, ore deposits and origin
- Publication Date: 1991
- Cross Section: None
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Geologic units referred to in Geolex
- This product is available, please note the publication series and number, and then contact:
- Montana Bureau of Mines and Geology
- Montana Tech of the Univ. of Montana
- 1300 W. Park St.
- Butte, MT 59701-8997
- Phone: (406) 496-4174
- Email: pubsales@mtech.edu
* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.