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Grinnell Fm and Clark Fork, Montana
Proterozoic Grinnell Formation (sandstone) of the Belt Supergroup cropping out in the Clark Fork, the main river that drains NW Montana. (IP16-3580)
Download ImageGrinnell Fm and Clark Fork, Montana (vertical)
Proterozoic Grinnell Formation (sandstone) of the Belt Supergroup cropping out in the Clark Fork, the main river that drains NW Montana. (IP16-3580)
Download ImageGrinnell Fm and Clark Fork, Montana
Proterozoic Grinnell Formation (sandstone) of the Belt Supergroup cropping out in the Clark Fork, the main river that drains NW Montana. (IP16-3580)
Download ImageSteeply dipping sandstone, Olympic Coast, Washington (IP16-3491)
Steeply dipping Eocene sandstone, Olympic coast, Washington IP16-3491)
Download ImageDry Falls Cataract, Washington (Pan)
Dry Falls Cataract, Washington, formed by catastrophic erosion of Columbia River Basalt Group lava flows in lower Grand Coulee by the Ice Age (Missoula) Floods. (IP16-3808)
Download ImageEocene Ginkgo leaf (square)
fossilized Eocene Ginkgo leaf, Republic, Washington (IP16-3782)
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Rounded river boulders, Oregon
Rounded boulders and cobbles along North Fork Willamette River, Oregon. (IP-1045)
Download ImageCrater Lake caldera, Oregon (Pan)
Crater lake fills the caldera of Mt. Mazama, a Cascade stratovolcano that erupted catastrophically 7700 years ago. Wizard Island, an andesitic cinder cone, forms the island. Crater Lake National Park, Oregon. (IP-0533)
Download ImageHand samples of metamorphic rocks
From left to right (in order of increasing grade) slate, phyllite, schist, gneiss. (Met-01)
Download ImagePorphyritic andesite
Hand specimen of porphyritic andesite with plagioclase phenocrysts (ip4094)
Download ImageBandelier Tuff, Jemez Mtns, New Mexico
Cliffs of 1.14 million year Bandelier Tuff, erupted from Valles Caldera in the Jemez Mountains, New Mexico. (160909-40)
Download ImageBandelier Tuff, Los Alamos, New Mexico
1.14 million year Bandelier Tuff erupted from Valles Caldera. (160909-18)
Download ImageBandelier Tuff, Los Alamos, New Mexico
1.14 million year Bandelier Tuff erupted from Valles Caldera, New Mexico. (160909-12)
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Mangrove swamp, SW Florida
Aerial view of mangrove swamp, Everglades National Park, Florida (160330-240)
Download ImageSand deposits on island, SW Florida
Aeria view of sand deposits on island in Everglades National Park, Florida (160330-228).
Download ImageSand deposits on island, SW Florida
Aeria view of sand deposits around island in mangrove swamp, Everglades National Park, Florida (160330-228).
Download Imagesand shoal, SW Florida Everglades
Aeria view of sand shoal and islands in mangrove swamp, Everglades National Park, Florida (160330-222). beach, bar
Download ImageSand deposits on island, SW Florida
Aeria view of sand deposits around island in mangrove swamp, Everglades National Park, Florida (160330-212).
Download ImagePavilion Key, SW Florida Everglades
Aerial view of Pavilion Key, Everglades National Park, Florida. Gulf of Mexico in background. (160330-204)
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