Figure Caption: Varnished colluvial boulder deposits along the west flank of the Yucca Mountains, southern Nevada (upper panel; view E) and optical microstratigraphy of rock varnish from the colluvial boulder deposits (lower panel). Varnish-based age estimate indicates a minimum-limiting age of 46 ka for emplacement of these deposits.
Figure Caption: Varnished colluvial boulder deposits near Darwin Pass in the Panamint Range, southern California (upper panel; view SE) and optical microstratigraphy of rock varnish from the colluvial boulder deposits (lower panel). Varnish-based age estimate indicates a minimum-limiting age of 39 ka for emplacement of these deposits.