Earth:Blaylock Sandstone
From HandWiki
| Blaylock Sandstone Stratigraphic range: Silurian | |
|---|---|
| Type | Formation |
| Unit of | none |
| Sub-units | none |
| Underlies | Missouri Mountain Shale |
| Overlies | Polk Creek Shale |
| Thickness | up to 1200 feet[1] |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named for | Blaylock Mountain, Montgomery County, Arkansas |
| Named by | Albert Homer Purdue[2][3] |
The Blaylock Sandstone is a Silurian geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. 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 Blaylock Mountain in Montgomery County, 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.
Paleofauna
- Dictyonema[5]
- Dimorphograptus
- D. decussatus[5]
- Gladiograptus
- G. perlatus[5]
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: 20–21. 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.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Miser, Hugh D.; Purdue, A.H. (1929). "Geology of the De Queen and Caddo Gap quadrangles, Arkansas". U.S. Geological Survey Bulletin 808: 45.
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