Gypsum Layer in Spearfish Formation, SD

Image: Gypsum Layer in Spearfish Formation, SD

Detailed Description

Spearfish Formation near Spearfish, SD. The Spearfish Formation is a red, silty shale with interbedded red sandstone and siltstone. The formation contains massive gypsum deposits, which is the white layer in the photograph.

Details

Image Dimensions: 2048 x 1536

Date Taken:

Location Taken: Spearfish, SD, US