Mineralogy of a Sulfate-rich Inverted Channel in the Atacama Desert, Chile: Clues to its Formation and Preservation

23 Feb 2020 Dobrea E. Z. Noe Williams R. M. E. Dietrich W. E. Howard A. D. Cawley J. C. Irwin R. P. III

We have performed a stratigraphic and mineralogical analysis of a vertical transect across a ridge located at the distal end of a system of eroded alluvial deposits in the northern Atacama Desert of Chile. The ridge, which is interpreted to be an inverted channel, exhibits a history of sedimentary, evaporitic, and diagenetic origin that includes groundwater mobilization and precipitation of anhydrite cements throughout the volume of the ridge... (read more)

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  • EARTH AND PLANETARY ASTROPHYSICS
  • GEOPHYSICS