| The whitish to cream-colored sediments are fine sands, silts and clays belong to what geologists have named the late Pleistocene Rogers Lake Beds; the sediments were washed into the Rogers Lake basin roughly 15 thousand years ago. Near this area depicted in the image, during a visit to Death Valley in April 2003, I spotted a fossil horse astragalus (ankle bone) that had weathered out on the surface. |