The MosalemFormation is a geologic formation in Illinois. It preserves fossils dating back to the Silurian period. Earth sciences portal Illinois portal...
quartz pebbles, as well as a matrix of quartz sand. The Wilcox Formation is a sand formation that is part of the Embayment Megagroup. It runs from southern...
Kinkaid formation to the west. Mt. Pleasant Sandstone, Bristow Sandstone, and Siberia Limestone. The Siberia is a thin tongue of the Menard formation. This...
The Knox Supergroup, also known as the Knox Group and the Knox Formation, is a widespread geologic group in the Southeastern United States. The age is...
The Munising Group or Formation is a 1,700 feet (520 m) thick, white to light grey Cambrian sedimentary unit that crops out in Michigan and (to a lesser...
The Hunton Megagroup also Hunton Super Group, Hunton Group, Hunton Formation and Hunton Limestone is predominantly composed of carbonate rock, deposited...
use. The Petersburg formation also contains sandstone members that are used as aquifers. The Linton Formation is a geologic formation in Indiana. It is...
underlies the Antrim Shale. The North Vernon Limestone is a geologic formation in Indiana. Also called the Sellersburg Limestone, this term however is...
The Paoli Formation, Paoli Limestone, or Paoli Chert is a geologic formation in Indiana, Illinois, Kentucky and Missouri. This formation contains members...
Harmony Group is located in the State of Indiana. It is made up of three formations, the Grassy Knob Chert, the Backbone Limestone and Clear Creek Chert....
The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod. Paleontology...
The Neda Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois portal...
The Mifflin Formation is a fossil bearing geologic formation in Illinois dating to the Ordovician period. Earth sciences portal Illinois portal Paleontology...
The Mattoon Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. List of fossiliferous stratigraphic...
The Patoka Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. List of fossiliferous stratigraphic...
The Claiborne Formation or Claiborne Group is a geologic formation in Arkansas, Illinois, Kentucky, and Texas. It preserves fossils dating back to the...
The Dubuque Formation is a geologic formation in Illinois, Iowa, Wisconsin and Minnesota. It preserves fossils dating back to the Ordovician period. List...
The Paint Creek Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Illinois...
The Golconda Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period. In Indiana, the Golconda, it...
The Pecatonica Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. List of fossiliferous stratigraphic...
The Wise Lake Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...
The Bond Formation is a geologic formation in Illinois, Kentucky and Indiana. It preserves fossils dating back to the Carboniferous period. List of fossiliferous...
Commons has media related to Fort Payne Formation. The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of...
The Salem Formation is a geologic formation in Illinois, Indiana, Kentucky, and Missouri. It preserves fossils dating back to the Mississippian subperiod...
The Quimbys Mill Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...
The Dunleith Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...
The Maquoketa Formation is a geologic formation in Illinois, Indiana. Iowa, Kansas, Minnesota, Missouri, and Wisconsin. It preserves mollusk, coral, brachiopod...