- Stanley Shale - Wikipedia
The Stanley Shale is recognized as a geologic formation with two sub-units in Arkansas, the Hatton Tuff Lentil and the Hot Springs Sandstone Member, [1] however, several others have been proposed
- FOSSIL PLANTS FEOM THE STANLEY SHALE AND JACKFOEK SANDSTONE IN . . .
At first both formations were supposed to be Ordovician, fossil shells of that age being found in transported boulders deposited in a formation apparently overlying the Stanley and Jackfork
- Arkansas River Valley and Ouachita Mountains
Both plant and invertebrate fossils occur in the Stanley Shale, but the preservation is usually poor The Hot Springs Sandstone and conglomerate breccia at the base of the formation possibly indicates a submarine disconformably between the Stanley Shale and the Arkansas Novaculite in Arkansas
- Geologic Map of the De Queen Quadrangle, Sevier County, Arkansas
In the quadrangle about 900 feet ot the uppermost Jackfcrk Sandstone and thick conformable sequences of younger Pennsylvanian strata are absent due to overlap by Lower Cretaceous strata The formation is conformable with the underlying Stanley Shale
- AAPG Datapages Archives: New Evidence for Dating Carboniferous Flysch . . .
In Saline and Perry Counties, Arkansas, Pitkin Limestone fossils, most of them in reworked boulders, are present about 500 ft below the top of the Stanley Near Little Rock, Arkansas, ammonoids in the upper part of the Stanley represent the Reticuloceras tiro zone of the lower Hale
- Age of Lower Part of Stanley Shale - GeoScienceWorld
The Stanley has generally been regarded as either basal Pennsylvanian or uppermost Mississippian; consequently, the presence of this older fauna prompted a general investigation of the formation throughout the Ouachita Mountains of Arkansas and Oklahoma
- Geology of deep-water sandstones in the Mississippi Stanley Shale at . . .
The Mississippian Stanley Shale crops out along the Cossatot River in the Ouachita Mountains of western Arkansas Here, exposures of deep-water sandstones and shales, on recently established public lands, present a rare, three-dimensional look at sandstones of the usually obscured Stanley
- NPS Geodiversity Atlas—Hot Springs National Park, Arkansas
Marine invertebrate fossils have been discovered in the Ordovician, Silurian, Devonian, and Mississippian rocks delineated on the geologic map Some plant and vertebrate fragments are noted from the Stanley Shale (Ms)
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