Aztec Sandstone

Aztec Sandstone is a geological formation in Nevada consisting of alternating layers of white quartz arenites and reddish-brown silty sand. The distinctive banding of light and dark layers runs through areas of the Mojave Desert region.

The formation was named in 1931 by geologist D.F. Hewett and dates to the Early Jurassic period from roughly 200 million years ago. The layers contain fossilized trackways left by early dinosaurs such as Anchisauripus and Grallator.

The formation serves as a research site for geologists and paleontologists studying the geological records of the Mesozoic era in North America.

The formation is located near the Muddy Mountain area in Nevada and can be reached by visitors with hiking experience. The terrain is rugged and can be hot in summer, so come prepared with water and sun protection.

Natural depressions in the sandstone collect water to form tanks such as Aztec Tank, creating vital water sources in this dry landscape. These pools supported wildlife and travelers moving through the desert region.

Location: Nevada

Made from material: sandstone

GPS coordinates: 35.92861,-115.47000

Latest update: December 11, 2025 18:03