An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the
United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Google Analytics Dashboard for Composite measured section showing nonopaque heavy minerals in sedimentary rocks of middle Proterozoic to late Tertiary age in the central Rocky Mountains, southwest Wyoming and northwest Colorado
Composite measured section showing nonopaque heavy minerals in sedimentary rocks of middle Proterozoic to late Tertiary age in the central Rocky Mountains, southwest Wyoming and northwest Colorado