Ventifacts, SE California

Typically formed on valley floors, ventifacts are rocks that exhibit grooves and facets from abrasion by wind-borne sand.

Mojave Desert, wind, eolian, erosion, weathering, abrasion, faceted

Angular unconformity, Death Valley, CA.

Angular Unconformity at Ryan

national park, talus, lava

cross-cutting relations in canyon wall

Panamint Valley in Death Valley National Park

Paleozoic rock is folded because of the Late Paleozoic-early Mesozoic compressional mountain-building; it is intruded by Jurassic age granitic rock, an early phase of Sierran magmatism that took place just to the west; the granitic rock is overlain by Late Cenozoic basalt flows, and everything is cut by a normal (extensional) fault. (Image ID#rainbowunconf-noteslr)

cross-cutting relations (pan)

A rainbow unconformity in the Mojave Desert.

A canyon wall on west side of Panamint Valley in SE California –part of Death Valley National Park. (Image ID# pan-rainbowunconf)