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.
Geochemical map showing the distribution and abundance of copper, lead, and barium in stream-sediment samples in the West Chichagof-Yakobi Wilderness Study Area, Sitka quadrangle, southeastern Alaska
Geochemical map showing the distribution and abundance of copper, lead, and barium in stream-sediment samples in the West Chichagof-Yakobi Wilderness Study Area, Sitka quadrangle, southeastern Alaska