St. Peter Sanstone and Everton Formation (Middle Ordovician)

St. Peter Sanstone and Everton Formation (Middle Ordovician)
State Arkansas
Name St. Peter Sanstone and Everton Formation (Middle Ordovician)
Geologic age Middle Ordovician
Lithologic constituents
Major
Sedimentary > Carbonate > Dolostone (Bed)
Sedimentary > Clastic > Sandstone (Bed)
Incidental
Sedimentary > Carbonate > Limestone (Bed)
Comments St. Perter Sanstone-white saccharoidal sandstone (200ft.); Everton FM-mainly dolomite, limestone interbedded with sandstone and some massive sandstone beds (205 ft.). Approximatly 405 ft. maximum thickness. Summary-55% sandstone, 35% dolomite, 10% limestone.
References

Ferguson, J.G., 1920. Outlines of the geology, soils, and minerals of the State of Arkansas: Arkansas State Bureau of Mines, Manufactures and Agriculture,192 pp.

NGMDB product
Counties Baxter - Boone - Carroll - Fulton - Independence - Izard - Lawrence - Madison - Marion - Newton - Searcy - Sharp - Stone