Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

Argon Data for samples from the Elkhead and Rabbit Ears Mountains, northern Colorado, USA

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-06-20T00:00:00Z
This dataset accompanies the planned publication “Mantle Melting in Regions of Thick Continental Lithosphere-Examples from Late Cretaceous and Younger Volcanic Rocks, Southern Rocky Mountains, Colorado” in the journal Geosphere. The dataset includes 40Ar/39Ar data for 19 samples from the Rabbit Ears volcanic field and from the Elkhead Mountains in northcentral Colorado, USA. Samples were collected from this area by James Mize (University of Colorado, Boulder), Lang Farmer (University of Colorado, Boulder), and Michael Cosca (USGS) with helpful input about sampling locations by Kenzie Turner (USGS). The samples were analyzed in the Denver Argon Geochronology Laboratory at the USGS from September, 2013 to July, 2017.

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov