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Triassic Lingula brachiopods
Triassic lingula brachiopod fossils in limestone of the Dinwoody Formation, SW Montana (240726-5)
Download ImageGlacial trough, Glacier NP, Montana
St. Mary Lake, which occupies a glacial trough, Glacier National Park, Montana (240719-22)
Download ImageProterozoic armored mudballs, Montana
Armored mudballs in Proterozoic Grinnell Formation, part of the Belt Supergroup of Glacier National Park, Montana (240718-7)
Download ImageProterozoic armored mudballs, Montana
Armored mudballs in Proterozoic Grinnell Formation, part of the Belt Supergroup of Glacier National Park, Montana (240718-6)
Download ImageMississippian coral in dolomite
Mississippian-age coral in Castle Reef Dolomite, Lewis and Clark National Forest, Montana (240717-7)
Download ImagePediment and bedrock, SW Montana
Tilted sandstone bedrock and overlying pediment surface, SW Montana (240710-1)
Download Image240626-50
Sigma-type asymmetric granitic porphyroclasts in ductile shear zone. Bitterroot mylonite front, Montana (240626-49)
Download Image240626-49
Sigma-type asymmetric granitic porphyroclasts in ductile shear zone. Bitterroot mylonite front, Montana (240626-49)
Download Image240109-16
River deposits of the Miocene Punchbowl Formation, Devils Punchbowl County Park, California (240109-16)
Download ImageSmall-scale normal faults in sandstone, Oregon
Small-scale normal faults in sandstone of Eocene Coaledo Formation, Oregon (230825-18)
Download ImageDrowned trees in intertidal zone, Oregon (vertical)
1200 year old Sitka Spruce drowned by earthquake-induced coastal subsidence, Sunset Bay, Oregon (240609-57)
Download ImageDrowned trees in intertidal zone, Oregon
1200 year old Sitka Spruce drowned by earthquake-induced coastal subsidence, Sunset Bay, Oregon (240609-57)
Download ImageWave-cut bench and uplifted terrace, Oregon
Angular unconformity between tilted Eocene Coaledo Formation and uplifted Pleistocene deposits of a marine terrace. Sunset Bay, Oregon (240609-39)
Download ImageAlteration along fractures, Oregon (vertical)
Alteration along fractures in cross-bedded sandstone of the Eocene Coaledo Formation, Oregon (240609-36)
Download ImageCretaceous turbidites in Oregon sea cliffs
Cretaceous turbidites of Fulmar subterrane of the Franciscan Complex, Oregon (240329-38)
Download ImageTurbidites in Oregon sea cliffs (vertical)
Cretaceous turbidites of Fulmar subterrane of the Franciscan Complex, Oregon (240329-37)
Download ImageChilled margin on basalt pillow, Oregon
Chilled margin on basaltic pillow. Siletzia accreted terrane, Oregon (240309-13)
Download ImageUplifted marine terrace, Oregon
Breaking wave and uplifted marine terrace at Shore Acres State Park, Oregon (240225-72)
Download ImageBreaking wave and sea stack, Oregon
Breaking wave and sea stack at Shore Acres State Park, Oregon (240225-46)
Download ImageSoft-sediment deformation, Oregon
Soft-sediment deformation in sandstone of the Eocene Coaledo Formation, Oregon (220825-35)
Download ImageRipple cross-laminations in sandstone, Oregon
Wave-ripple cross-lamination in sandstone and siltstone of Eocene Coaledo Formation, Oregon (220825-6)
Download Image
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