Crystal Mountain Sandstone | |
---|---|
Stratigraphic range: Ordovician | |
Type | Formation |
Unit of | none |
Sub-units | none |
Underlies | Mazarn Shale |
Overlies | Collier Shale |
Thickness | 500 to 800 feet [1] |
Lithology | |
Primary | Sandstone |
Location | |
Region | Arkansas, Oklahoma |
Country | United States |
Type section | |
Named for | Crystal Mountains, Montgomery County, Arkansas |
Named by | Albert Homer Purdue [2] [3] |
The Crystal Mountain Sandstone is an Ordovician geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. This interval was first described in 1892, [4] but remained unnamed until 1909 as part of a study on the Ouachita Mountains of Arkansas by Albert Homer Purdue. [2] [3]