Geologists Ralph Milliken and Vivian Sun of Brown University, Providence, Rhode Island, surveyed sites near the center of 633 Martian craters, including 265 with deposits of clays and other hydrated minerals detected in observations from orbit.
At several of the sites, evidence pointed to local formation of the hydrated minerals inside relatively young craters. The study is reported in the Journal of Geophysical Research: Planets.
The full story from Brown University is at:
For more about the Mars Reconnaissance Orbiter, visit:
Jet Propulsion Laboratory, Pasadena, Calif.
Dwayne Brown / Laurie Cantillo
NASA Headquarters, Washington
202-358-1726 / 202-358-1077
firstname.lastname@example.org / email@example.com