Nippewalla Group Archives - Astrobiology

Primary fluid and solid inclusions along growth bands in bedded halite samples from this study.(E and F) Paired plane transmitted light (E) and cross-polarized views of solid inclusions in Cedar Hills Sandstone from Kansas, USA, 715.62 m (2347 ft, 6 in). XPL—cross-polarized light. -- GSA Bulletin

Astrogeology, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Fossils & Paleontology, Imaging & Spectroscopy, Status Report

Micron-scale Crystals In Halite Are Proxies For Permian Acid Brines

by Keith CowingJune 26, 2025June 26, 2025

Permian bedded halite of the Nippewalla Group of Kansas and the Opeche Shale of North Dakota, USA, formed in extremely acid saline lakes.