Mazarn Shale | |
---|---|
Stratigraphic range: Ordovician | |
Type | Formation |
Unit of | none |
Sub-units | none |
Underlies | Blakely Sandstone |
Overlies | Crystal Mountain Sandstone |
Thickness | 1000 to 2500+ feet[1] |
Lithology | |
Primary | Shale |
Location | |
Region | Arkansas, Oklahoma |
Country | United States |
Type section | |
Named for | Mazarn Creek, Montgomery County, Arkansas |
Named by | Hugh Dinsmore Miser[2] |
The Mazarn Shale is an Early Ordovician geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. This interval was first described in 1892,[3] but remained unnamed until 1918 as part of a study by U.S. Geological Survey geologist Hugh Dinsmore Miser.[2]