Bloyd Shale, and Prairie Grove Member of the Hale Formation

Bloyd Shale, and Prairie Grove Member of the Hale Formation
State Arkansas
Name Bloyd Shale, and Prairie Grove Member of the Hale Formation
Geologic age Middle Pennsylvanian- Morrowan
Lithologic constituents
Major
Sedimentary > Clastic > Sandstone (Bed)
Sedimentary > Clastic > Mudstone > Shale (Bed)
Minor
Sedimentary > Clastic > Conglomerate (Bed)
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)
Sedimentary > Carbonate > Limestone (Bed)
Comments 60%- med. grained mix clastics- sandstones, shales, limestones and conglomerate. 25%-black shales. 15%-limestones
References

Hanbest, L.G., 1953, Morrow group and lower Atoka Formation of Arkansas:Bulletin of the American Association of Petroleum Geologists, vol.37, no.8, pp.1935-1953,

Purdue, A.H., 1907, Developed phosphate deposits of northern Arkansas: U. S. Geological Survey Bull., Report: B 0315-P, pp.463-473

https://pubs.er.usgs.gov/publication/b315P

NGMDB product
Counties Boone - Carroll - Cleburne - Crawford - Franklin - Independence - Jackson - Johnson - Madison - Newton - Pope - Searcy - Stone - Van Buren - Washington - White