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List of fossiliferous stratigraphic units in Arkansas. Add languages ... This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas ...
The Smackover Formation is a geologic formation that extends under parts of Arkansas, Louisiana, Texas, Alabama, Mississippi, and Florida. [1] It preserves fossils dating back to the Jurassic period. The formation is a relic of an ancient sea that left an extensive, porous, and permeable limestone geologic unit.
The Fayetteville Shale is a geologic formation of Mississippian age (354–323 million years ago) composed of tight shale within the Arkoma Basin of Arkansas and Oklahoma. [4] [7] It is named for the city of Fayetteville, Arkansas, and requires hydraulic fracturing to release the natural gas contained within.
Southern and northeastern Arkansas were likewise covered by the sea into the Cretaceous. Local life left behind many fossils. [4] During the Early Cretaceous, the region of Arkansas southeast of the Ouachita Mountains was submerged by the Gulf of Mexico. [8] The invertebrates of Arkansas's Cretaceous sea included clams, echinoids, oysters, and ...
White Bluff, along the Arkansas River The White Bluff Formation is a marl, sand, and clay geologic formation in Arkansas that is part of the Jackson Group . It preserves fossils dating back to the Paleogene period , specifically the Eocene .
List of fossiliferous stratigraphic units in Arkansas This page was last edited on 30 November 2014, at 05:58 (UTC). Text is available under the Creative Commons ...
List of fossiliferous stratigraphic units in Arkansas This page was last edited on 7 April 2015, at 22:39 (UTC). Text is available under the Creative Commons ...
Arkansas, Oklahoma: Country: ... with the Little River in the foreground, ... List of fossiliferous stratigraphic units in Arkansas; Paleontology in Arkansas;