Madison Limestone in Spearfish Canyon, SD
![Image: Madison Limestone in Spearfish Canyon, SD](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/madison1.jpg?itok=mper3q-Y)
Detailed Description
Outcrop of the Madison Limestone in Spearfish Canyon in the northern Black Hills of South Dakota. The Madison Limestone is a massive, gray to buff limestone with some dolomite.
Sources/Usage
Public Domain.