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The Annona Chalk is a geologic formation in Arkansas, Texas, Louisiana, and Oklahoma. [2] It preserves fossils dating back to the Cretaceous period. The formation is a hard, thick-bedded to massive, slightly fossiliferous chalk. It weathers white, but is blue-gray when freshly exposed. The unit is commercially mined for cement.
This is a listing of sites of archaeological interest in the state of Arkansas, in the United States
The Aubrey holes are a ring of 56 chalk pits at Stonehenge, named after seventeenth-century antiquarian John Aubrey. They date to the earliest phases of Stonehenge in the late fourth and early third millennium BC. Despite decades of argument and analysis, their purpose is still unknown, although an astronomical role has often been suggested.
The Saratoga Chalk is a geologic formation in Arkansas. [1] It preserves fossils dating back to the Cretaceous period, ...
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Plum Bayou Mounds Archeological State Park (), formerly known as "Toltec Mounds Archeological State Park", [3] also known as Knapp Mounds, Toltec Mounds or Toltec Mounds site, is an archaeological site from the Late Woodland period in Arkansas that protects an 18-mound complex with the tallest surviving prehistoric mounds in Arkansas.
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Pages in category "Archaeological sites on the National Register of Historic Places in Arkansas" The following 56 pages are in this category, out of 56 total.