Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Badlands carved in fossiliferous deposits in eastern Lanfair Valley in the eastern Mojave National Preserve. The tan-colored sediments are interpreted as playa and pluvial lake deposits of Pliocene to Pleistocene age (Theodore and others, 2007; Reynolds and others, 1995).
Public Domain.
