GSA Today
Volume 25, Number 6 (June 2015)

Cover image

About the cover:
Shallow acid saline water in Gneiss Lake, near Grass Patch in Western Australia, is an example of end-member continental brines. Orange iron oxide staining and white halite and gypsum precipitate on Precambrian quartzite gravel in lake. Photo taken in January 2008, when lake water was undergoing evapo-concentration and had pH 2.0 and salinity 28% total dissolved solids. Photo by Kathleen Benison. See related article, p. 4–10.

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