Mars: ancient fingerprints in the clay.
Catling
David C
DC
D002245:Carbon Dioxide; D005118:Extraterrestrial Environment; D018535:Mars; D017640:Silicates; D013816:Thermodynamics; D014867:Water
D017640:Silicates; D014867:Water; D002245:Carbon Dioxide; C033214:Smectite