Scarp Retreat Model and Exposure History of Yellowknife Bay

NASA Curiosity Mars rover has made measurements indicating that the Cumberland rock target the rover drilled in May 2013 has been exposed at the surface for about 80 million years.

NASA Curiosity Mars rover has made measurements indicating that the Cumberland rock target the rover drilled in May 2013 has been exposed at the surface for about 80 million years.

MarsMars Science Laboratory MSL