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Ghost Forest, Oregon
Barnacle-encrusted stumps of Sitka Spruce, drowned from subsidence during a subduction zone earthquake some 1600 years ago (180629-25)
Download ImageGhost Forest, Oregon (vertical)
Barnacle-encrusted stumps of Sitka Spruce, drowned from subsidence during a subduction zone earthquake some 1600 years ago (180629-22)
Download ImageGhost Forest, Oregon
Barnacle-encrusted stumps of Sitka Spruce, drowned from subsidence during a subduction zone earthquake some 1600 years ago (180629-18)
Download ImageUplifted marine terrace, Oregon (Pan)
Panorama view of uplifted marine terrace, exposing the angular unconformity between Pleistocene coastal deposits above tilted Miocene Astoria Formation. Devils Punchbowl, Oregon. (170909-13)
Download ImageSlump blocks, Oregon Coast
Slump blocks of sandstone, Devils Punchbowl, Oregon (170909-10)
Download ImageErosion along fault, Oregon Coast (square)
Erosion along fault, Devils Punchbowl, Oregon Coast (170909-4)
Download ImageTyndall Glacier, Rocky Mtn NP, CO
Tyndall Glacier, at the top of a cirque in Chaos Canyon, Rocky Mountain National Park, Colorado (5D08-5358)
Download ImageBanded gneiss
Banded gneiss –high grade metamorphic rock from a likely sedimentary protolith. Geologist is about 1 meter tall. (19L97-19)
Download ImageButtress unconformity, N Arizona
Buttress unconformity between alluvial fan gravels and basement gneiss andn schist, northern Arizona (9OtR97-339)
Download ImageShiprock, New Mexico
Shiprock, an eroded volcanic neck of lamprohyre (minette), New Mexico (9OtR-185)
Download ImageDike at Shiprock, New Mexico (vertical)
Lamprophyre (minette) dike at Shiprock, New Mexico (9OtR90-183)
Download ImageFault scarp and Borah Peak, Idaho
Fault scarp from the 1983 M6.9 Borah Peak earthquake, Idaho (OtR-142)
Download ImageBig Obsidian Flow, Newberry Caldera, Oregon
Aerial view of Big Obsidian Flow, a rhyolite that erupted only 1300 years ago. Newberry Caldera, Oregon. (9A99-73D)
Download ImageGlacial moraines and Sierra Nevada, CA
Aerial view of Grant Lake, California, a lake dammed by a glacial moraine (9A91N-24)
Download ImageColorado National Mon, CO (vertical)
View northward over tower and cliffs of Wingate Sandstone, Colorado National Monument, Colorado. In the middle ground, you can see the monocline that defines the front of the range. (6CPT82-41)
Download ImageMonocline, Colorado National Monument
Cliffs of folded Wingate Sandstone in monocline at Colorado National Monument (6CNM89-4)
Download ImageColorado National Monument, CO
View northward over tower and cliffs of Wingate Sandstone, Colorado National Monument, Colorado. In the middle ground, you can see the monocline that defines the front of the range. (6CNM14)
Download ImageMonocline, Colorado National Monument
Cliffs of folded Wingate Sandstone in monocline at Colorado National Monument (6CNM-7)
Download ImageBoudinage of pegmatite in marble
Boudinage of pegmatite in calc-silicate marble (5Side-30)
Download ImageBasement tower in Curecanti Nat Rec Area, CO
Tower, eroded from crystalline basement rock (gneiss) in Curecanti National Recreation Area, Colorado (4BC-14)
Download ImagePassive folds developed in oil screen on water.
Passive folds developed in oil screen on water. (IP20-6889)
Download Image
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