Gray slope-forming Mancos Shale below resistant sandstone caprock in the Capital Reef area of Utah

A slope-former[1] is a unit of bedrock which is less resistant to erosion than overlying or underlying units and consequently results in outcrops with low relative slope angles. It may be contrasted with cliff-former. Typical slope forming lithologies include shales, and limestones in humid environments.

References

  1. ↑ "Geologic Unit: Tidwell". ngmdb.usgs.gov. U.S. Department of the Interior, U.S. Geological Survey. Retrieved 16 August 2023.


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