Grand Detour Formation information

The Grand Detour Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...

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...

underlies the Antrim Shale. The North Vernon Limestone is a geologic formation in Indiana. Also called the Sellersburg Limestone, this term however is...

use. The Petersburg formation also contains sandstone members that are used as aquifers. The Linton Formation is a geologic formation in Indiana. It is...

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...

abandoned town of Bailey's Landing near the village of Grand Eddy, on the Mississippi River. The formation is gray to greenish gray, silty with chert inclusions...

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 Paoli Formation, Paoli Limestone, or Paoli Chert is a geologic formation in Indiana, Illinois, Kentucky and Missouri. This formation contains members...

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 Wise Lake Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...

The Nachusa Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois portal...

The Glenwood Formation is a geologic formation in Illinois. It preserves fossils dating back to the Ordovician period. Earth sciences portal Illinois...

The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod. Paleontology...

The Dunleith 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...

The Grand Tower Limestone is a geologic formation in Illinois. It preserves fossils dating back to the Devonian period. Earth sciences portal Illinois...

featuring local fossils from the Ordovician Platteville, Mifflin, and Grand Detour Formations, as well as a diorama of life in the prehistoric Rockford; an expansive...

The Leemon Formation is a geologic formation in Missouri. It preserves fossils dating back to the Ordovician period. Earth sciences portal United States...

The Shelburn Formation is a geologic formation in Indiana. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Indiana...

The Mifflin Formation is a fossil bearing geologic formation in Illinois dating to the Ordovician period. Earth sciences portal Illinois portal Paleontology...

The Claiborne Formation or Claiborne Group is a geologic formation in Arkansas, Illinois, Kentucky, and Texas. It preserves fossils dating back to the...

The Mosalem Formation is a geologic formation in Illinois. It preserves fossils dating back to the Silurian period. Earth sciences portal Illinois portal...

The Patoka Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. List of fossiliferous stratigraphic...

The Paint Creek Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period. Earth sciences portal Illinois...