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