• Specimen Number

  34

• Description

  Boulder of reddish brown sandstone. In closeup the heterogeneous composition of grains is visible, suggesting arkose. Common voids (vugs) where grains have weathered out. Locally muddy and(or) pervasively hematite stained. Locally black with manganese (?) oxides, indicating permeability.

• Classification

  Sedimentary. Sandstone. Arkose.

• Location & Occurrence

  Quick search for redbeds in Oklahoma reveals many Permian-era terrestrial deposits in south-central portions of the state. We follow this assumption.

• Geological Age

  Permian (?)

• Geoheritage

  The finer-grained members of such rocks were famous fossil-hunting grounds for the early dinosaur hunters like Edward Drinker Cope (1870s) and  Alfred Romer (early 20th century).

• Links

  Link to State Geological Map from USGS.  Link to Oklahoma Geological Survey.

• Other

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