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.

Fortymile River Cosmogenic Isotope and Luminescence Data Collected 2016-2019

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2025-05-23T00:00:00Z
This dataset is four tables containing cosmogenic beryllium-10 and aluminum-26 concentrations and related data, as well as infrared stimulated luminescence data, from samples collected at 21 sites along the Fortymile River in eastern Alaska and Yukon, Canada between 2016 to 2018, and processed between 2016 and 2019. The file "geology_siteLocations_Fortymile_bender_2020.csv" contains site locations in the NAD83 reference frame, and depositional ages or erosion rates computed from raw data contained in the other files. All files are linked by the "site_id" field.

data.gov

An official website of the GSA's Technology Transformation Services

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