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Desert varnish on sandstone cliffs, Nevada
Desert varnish on cliffs of Aztec Sandstone, Nevada (171217-11)
Download ImageEl Capitan, Guadalupe Mountains NP, Texas.
El Capitan, Guadalupe Mountains National Park, Texas. The main cliff consists of massive Permian limestone. It formed the central part of the Permian Reef Complex that makes up the Guadalupe Mtns. Below the peak are shale deposits from deeper parts of the basin. (100191-12)
Download ImageEl Capitan, Guadalupe Mtns NP, Texas (pan)
El Capitan, Guadalupe Mountains National Park, Texas. The main cliff consists of massive Permian limestone. It formed the central part of the Permian Reef Complex that makes up the Guadalupe Mtns. Below the peak are shale deposits from deeper parts of the basin. (100191-12C)
Download ImageEl Capitan, Guadalupe Mtns NP, Texas (Vertical)
El Capitan, Guadalupe Mountains National Park, Texas. The main cliff consists of massive Permian limestone. It formed the central part of the Permian Reef Complex that makes up the Guadalupe Mtns. Below the peak are shale deposits from deeper parts of the basin. (100191-12B)
Download ImageGlacial cirque, Glacier NP, Montana
Iceberg Lake fills a glacial cirque in Glacier National Park, Montana. Cliffs of Proterozoic Belt Supergroup (sedimentary) define the back of the cirque. (160715-39)
Download ImageGlacial cirque, Glacier NP, Montana
Iceberg Lake fills a glacial cirque in Glacier National Park, Montana. Cliffs of Proterozoic Belt Supergroup (sedimentary) define the back of the cirque. (160715-35)
Download ImageDiorite of the Purcell Sill, Glacier NP, Montana
Diorite of the Proterozoic Purcell Sill, Glacier National Park, Montana. Note the elongate black hornblende crystals and the light green epidote in the upper right quarter of the photo. Handlens for scale. (150713-99)
Download ImagePliocene trace fossils, Drakes Bay Fm., Cal (vertical)
Pliocene trace fossils (feeding tracks) Drakes Bay Formation, Pt. Reyes National Seashore, California (100319-72)
Download ImageSea cliffs, Pt. Reyes, California
Cliffs of Pliocene Drakes Bay Formation at Drakes Bay, Pt. Reyes National Seashore, California (100319-62)
Download ImageSea cliffs, Pt. Reyes, California
Cliffs of Pliocene Drakes Bay Formation at Drakes Bay, Pt. Reyes National Seashore, California (100319-59)
Download ImageSea Arch, Pt. Reyes, California
Sea Arch, eroded into Cretaceous granodiorite, Pt. Reyes National Seashore, California (100319-53)
Download ImageSea stacks of granodiorite, Pt. Reyes
Sea stacks and cliffs of Cretaceous granodiorite, Pt. Reyes National Seashore. (100319-52)
Download ImagePocket Beach and cliffs, Pt. Reyes, California
Pocket Beach and cliffs, Pt. Reyes National Seashore, California (100319-51)
Download ImageSea stacks of granodiorite, Pt. Reyes (vertical)
Sea stacks and cliffs of Cretaceous granodiorite, Pt. Reyes National Seashore. (100319-45)
Download ImagePocket Beach and cliffs, Pt. Reyes, Cal (vertical)
Pocket Beach and cliffs of Cretaceous granodiorite, Pt. Reyes National Seashore, California (100319-51)
Download ImageLiesegang banding in granodiorite
Liesegang banding in granodiorite, Point Reyes National Seashore (100319-36)
Download ImageMatrix-supported conglomerate, Pt. Reyes, Cal.
Matrix-supported Pt. Reyes Conglomerate (Paleocene) -photo is about 2 meters across, Pt. Reyes National Seashore, California. (100319-32)
Download ImagePt. Reyes conglomerate and lighthouse, California
Paleocene Pt. Reyes conglomerate and lighthouse, Pt. Reyes National Seashore, California (100319-29)
Download ImageEureka Sand Dunes, California
Aerial view of Eureka Sand Dunes, Death Valley National Park, California. Notice how Eureka Valley is bordered by bajadas coming off the Last Chance Range (east-right) (190125-67)
Download ImageEureka Sand Dunes, California
Aerial view of Eureka Sand Dunes, Death Valley National Park, California (190125-66)
Download ImageOwens Valley, California
Aerial view northward of Owens Valley, California. The Owens Valley is a graben between the fault-bounded Sierra Nevada on the west (left) and the White/Inyo Mountains on the east (right). (190125-58)
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