Skip to main content
U.S. flag

An official website of the United States government

Geologic Map and Sample Locations - Porcupine Mountains, Michigan

2016 (approx.)

Detailed Description

Geologic map and sampling locations for the watershed baseline chemistry and copper toxicity study, near copper deposits in the Porcupine Mountains, Michigan.


Public Domain.

Piatak and others, 2016.
Piatak, N.M., Seal, R.R. II, Jones, P.M., and Woodruff, L.G., 2016, Copper toxicity and dissolved organic matter: Resiliency of mineralized watersheds in northern Minnesota and Michigan: Institute on Lake Superior Geology Proceedings Volume 62, Part 1 - Program and Abstracts, May 4-8, 2016, Duluth, MN, p. 117-118.