Earth:Missouri Mountain Shale
From HandWiki
| Missouri Mountain Shale Stratigraphic range: Silurian | |
|---|---|
| Type | Formation |
| Unit of | none |
| Sub-units | none |
| Underlies | Arkansas Novaculite |
| Overlies | Blaylock Sandstone |
| Thickness | up to 300 feet[1] |
| Lithology | |
| Primary | Shale |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named for | Missouri Mountains, Polk County and Montgomery County, Arkansas |
| Named by | Albert Homer Purdue[2][3] |
The Missouri Mountain Shale is a Silurian geologic formation in the Ouachita Mountains of Arkansas and Oklahoma in the United States. First described in 1892,[4] this unit was not named until 1909 by Albert Homer Purdue in his study of the Ouachita Mountains of Arkansas.[2][3] Purdue assigned the Missouri Mountains in Polk and Montgomery counties, Arkansas as the type locality, but did not designate a stratotype. As of 2017, a reference section for this unit has yet to be designated.
See also
- List of fossiliferous stratigraphic units in Arkansas
- Paleontology in Arkansas
References
- ↑ McFarland, John David (2004). "Stratigraphic summary of Arkansas". Arkansas Geological Commission Information Circular 36: 21. http://geology.ar.gov/pdf/IC-36_v.pdf. Retrieved 2018-01-09.
- ↑ 2.0 2.1 Purdue, A.H. (1909). Slates of Arkansas. Geological Survey of Arkansas. pp. 30, 35.
- ↑ 3.0 3.1 Purdue, A.H. (1909). "Structure and stratigraphy of the Ouachita Ordovician area, Arkansas (abstract)". Bulletin of the Geological Society of America 19: 556–557.
- ↑ Griswold, L.S. (1892). "Whetstones and the novaculites". Annual Report of the Geological Survey of Arkansas for 1890 3.
 |  |
