| 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 |
| Lithology | |
| Primary | Shale |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named for | Mazarn Creek, Montgomery County, Arkansas |
| Named by | Hugh Dinsmore Miser |
The Mazarn Shale is an Early Ordovician geologic formation in the Ouachita Mountains of Arkansas and Oklahoma. This interval was first described in 1892, but remained unnamed until 1918 as part of a study by U.S. Geological Survey geologist Hugh Dinsmore Miser.
Paleofauna
Graptolites
- C. wrighti
- C. antennarius
- D. caduceus
- D. caduceus nana
- D. extensus
- D. filiformis
- D. nitidus
- D. similis
- G. hystrix
- P. typus
- T. clarkei
- T. fruticosus
- T. quadribrachiatus
- T. pendens
- T. serra
- T. similis
See also
References
- McFarland, John David (2004) . "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 18. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-08.
- ^ Miser, H.D. (1918). "Manganese deposits of the Caddo Gap and De Queen quadrangles, Arkansas". U.S. Geological Survey Bulletin. 660-C: 68.
- Griswold, I.S. (1892). "Whetstones and the novaculites". Annual Report of the Geological Survey of Arkansas for 1890. 3.
- ^ Miser, Hugh D.; Purdue, A.H. (1929). "Geology of the De Queen and Caddo Gap quadrangles, Arkansas". U.S. Geological Survey Bulletin. 808: 27–28.
- ^ Pitt, William D.; Cohoon, Richard R.; Lee, Harry C.; Robb, Marion G; Watson, John (January 1961). "Ouachita Mountain core area, Montgomery County, Arkansas". Bulletin of the American Association of Petroleum Geologists. 45 (1): 79–80. Retrieved 8 January 2018.
 | This article about a specific stratigraphic formation in the United States is a stub. You can help Misplaced Pages by expanding it. |