| The whitish to cream-colored sediments in the foreground are fine sands, silts and clays that belong to the late Pleistocene Rogers Lake Beds; the sediments were washed into what geologists call the Rogers Lake basin roughly 15 thousand years ago. Near this same 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. |