• Specimen Number

  26

• Description

  Pink-to-maroon colored, chisel-cut block of massive sandstone. No obvious bedding or fracturing.

• Classification

  Sedimentary.  Sandstone. Eolian.

• Location & Occurrence

  Identified by state survey at Univ. Nev. Reno as a "sandstone, probably the Aztec Sandstone, ...a quartz-rich eolian sandstone...correlates to the Navajo Sandstone of the Grand Canyon and Utah, and may have been collected from a sandstone quarry in Red Rock national Conservation area [Mohave Desert] outside of Las Vegas.

• Geological Age

  Early Jurassic

• Geoheritage

  Quarried and used for buildings in San Francisco and Los Angeles. Documents a vast erg desert in North America.  Fossil dune field is a host to pterosaur fossils.

• Links

  Link to State Geological Map from USGS.  Link to Nevada Bureau of Mines and Geology.

• Other

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