The Waldron Shale is a geologic formation in Indiana. It preserves fossils dating back to the Silurian period. These fossils comprise at least three different...

known as Waldron Island Waldron Ledge, Hawaii, which overlooks Kīlauea Caldera Waldron Shale, Indiana, a geologic formation Waldron Trail, a hiking trail...

sandstones at its base into mix of limestones and sandstone and then a shale at its top. In Southern Illinois oil wells are drilled into the Tar Springs...

Homerian Laurel Formation Louisville Limestone Waldron Shale Sheinwoodian Bisher Formation Laurel Formation Osgood Formation...

needed] The Buffalo Wallow Group is made up of approximately 70% Shale including fissile shales, claystones, and siltstones. The remaining lithology is made...

Facies-defining cycles are divided into grainy carbonate, muddy carbonate, sandstone, shale, and Stromatolitic–Algal mat Boundstones. Stromatolite reefs are a common...

Muscatatuck underlies the New Albany Shale throughout of its extent, except in Northern Indiana where it underlies the Antrim Shale. The North Vernon Limestone...

Colchester Coal, Mecca Quarry Shale, Velpen Limestone, and Survant Coal Members, and unnamed units of sandstone, shale, and clay". It preserves fossils...

formation consists of fine-grained dolomitic sandstone with interbedded shaly zones, becoming more dolomitic towards the east and south of its extent...

Sexton Creek Limestone St. Clair Limestone Wabash Formation Waldron Shale O Brainard Shale Dillsboro Formation Dutchtown Formation Everton Dolomite Fort...