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Grinnell Formation and glacial horn, Montana (vertical)
Cliff of Proterozoic Grinnell Formation, Glacier National Park, Montana. The Grinnell is part of the Belt Supergroup. (220720-22)
Download ImageGrinnell Formation and trail, Montana (vertical)
Trail cut into cliff of Proterozoic Grinnell Formation, Glacier National Park, Montana. The Grinnell is part of the Belt Supergroup. (220720-18)
Download ImageListric normal fault and Great unconformity, SW Montana
Listric normal fault offsetting and rotating Precambrian-Cambrian nonconformity, SW Montana. Geologist is standing next to Proterozoic schist that is cut by a pegmatite dike. It’s all overlain by a Cambrian basal conglomerate (in shadow), overlain by the Flathead Sandstone (220717-27)
Download ImageListric normal fault and rotation, SW Montana
Listric normal fault offsetting and rotating Precambrian-Cambrian nonconformity, SW Montana. hammer is on Proterozoic schist overlain by a Cambrian basal conglomerate, overlain by the Flathead Sandstone (220717-21)
Download ImageBasal conglomerate at pC-Cambrian Nonconformity, MT
Cambrian basal conglomerate beneath Cambrian Flathead Sandstone on top Proterozoic schist at the Great Unconformity, here a nonconformity, southwestern Montana (220717-20)
Download ImageSlaty cleavage and bedding, Montana
Slaty cleavage and bedding in limestone of the Mississippian Madison Group, SW Montana. (220717-7)
Download ImageSlaty cleavage and bedding, Montana (vertical)
Slaty cleavage and bedding in Mississippian Limestone, SW Montana. (220717-6)
Download ImageAsymmetric anticline in limestone, Montana
Asymmetric anticline in Cretaceous limestone, SW Montana (220713-2)
Download ImageAnticlinal hinge, SW Montana
Anticlinal fold hinge in Cretaceous sandstone, SW Montana (220710-13)
Download ImageProterozoic Altyn Dolomite, Glacier NP, Montana
Altyn Dolomite, part of the Proterozoic Belt Supergroup, Glacier National Park, Montana (190718-9)
Download ImageDipping Paleozoic and Mesozoic rock, SW Montana
Ridges of dipping Paleozoic and Mesozoic sedimentary rock, SW Montana (190711-14)
Download ImageFault-propagation fold, Montana
Fault-propagation anticline and thrust fault, Glacier National Park, Montana (220720-10)
Download ImagePluvial Lake: Upper Alkali Lake, NE California
Aerial view of Upper Alkali Lake and its alkali deposits, a pluvial lake in NE California, USA. View towards the northeast. (190925-258)
Download ImageBasalt capped mesa: N Table Mt, Golden, CO
Aerial view of a basalt-capped mesa, North Table Mountain, Golden, Colorado. The basalt erupted 62-64 Ma during the early Paleocene. Beneath the flows lie late Cretaceous-Paleocene rocks of the Denver Formation. (190925-134)
Download ImageRhyolite domes of Mono Craters, CA (vertical).
Aerial view of rhyolite domes of the Mono Craters, California. The large middle one is Obsidian Dome; the farthest back is Wilson Butte. (191106-30)
Download ImageMeandering River in California’s Great Valley (vertical)
Aerial view of the San Joaquin River and its meanders in the Great Valley of California near Modesto, California (191106-45)
Download ImageMeandering San Joaquin River in California’s Great Valley
Aerial view of the San Joaquin River and its meanders in the Great Valley of California near Modesto, California (191106-46)
Download ImageStructural dome: Belclabito Dome, AZ
Aerial view of a Structural dome developed in the red Jurassic Entrada Sandstone: Belclabito Dome, Arizona. (190925-46)
Download ImagePalouse and scablands, E Washington
Aerial view of Palouse wheatfields and scablands, eastern Washington, (201027-49)
Download ImagePaleozoic and Mesozoic stratigraphy, SW Montana
Successive hogbacks of dipping Paleozoic and Mesozoic rocks, SW Montana (130727-59)
Download ImageSierra Nevada Mountains, California.
Aerial view of the eastern Sierra Nevada Mountains, California, USA. The prominent peak just below and right of center is Mt. Tom. (190125-49)
Download Image
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