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Cross-bedded Grinnell Fm., Montana
Cross-bedding in sandstone of Proterozoic Grinnell Formation of the Belt Supergroup in Glacier National Park, Montana (210724-14)
Download ImageCross-bedded Grinnell Fm., Montana
Cross-bedding in sandstone of Proterozoic Grinnell Formation of the Belt Supergroup in Glacier National Park, Montana . Note that it dips in two different directions. (210724-14)
Download ImageRip-up clasts in Grinnell Fm., Montana
Rip-cup clasts in sandstone of Proterozoic Grinnell Formation of the Belt Supergroup in Glacier National Park, Montana . (210724-14) Precambrian
Download ImageMt. Gould at sunrise, Glacier NP, Montana
Mt. Gould and Lake Josephine at sunrise, Glacier National Park, Montana. Note the Purcell Sill. (210724-6)
Download ImageRunning Eagle Falls and Lewis Thrust, MT
Running Eagle falls pours from slot in Proterozoic Altyn Dolomite. Foreground rocks are Cretaceous sandstone; Lewis thrust emplaced the Proterozoic rock over the Cretaceous. (210723-22)
Download ImageGlacial erratics, Friday Harbor, WA
Granitic glacial erratics deposited on sandstone at Friday Harbor on San Juan Island, Washington. Note Washington State Ferry. (210713-32)
Download ImageTwin Sisters, Washington (Pan)
Panorama view Twin Sisters, Washington –peaks composed of dunite (210713-18)
Download ImageGlacial erratics, Friday Harbor, WA
Granitic glacial erratics deposited on sandstone at Friday Harbor on San Juan Island, Washington. (210713-8)
Download ImageOppositely graded beds reveals isoclinal fold.
Oppositely graded beds reveals isoclinal fold in sandstone, Lopez Structural Complex, Lopez Island, Washington (210712-40)
Download ImageGraded bed in overturned sandstone
Graded bed in overturned sandstone, Lopez Structural Complex, Lopez Island, Washington (210712-35)
Download ImageCretaceous pillow basalt, Washington
Cretaceous pillow basalt in the Lopez Structural Complex, Lopez Island, Washington (210712-27)
Download ImageCretaceous pillow basalt, Washington
Cretaceous pillow basalt in the Lopez Structural Complex, Lopez Island, Washington (210712-25)
Download ImageCretaceous pillow basalt, Washington
Cretaceous pillow basalt in the Lopez Structural Complex, Lopez Island, Washington (210712-24)
Download ImageCretaceous pillow basalt, Washington
Cretaceous pillow basalt in the Lopez Structural Complex, Lopez Island, Washington (210712-17)
Download ImageFolded ribbon chert, N Washington
Folded Paleozoic ribbon chert of the Bell Pass melange, North Cascades, Washington (200907-12)
Download ImageCretaceous granodiorite, S. Baja, Mexico
Cretaceous granodiorite, Southern tip of the Baja California Sur Peninsula, Mexico (17BS-11)
Download ImageGranodiorite, S. Baja, Mexico (vertical)
Cretaceous granodiorite, Southern tip of the Baja California Sur Peninsula, Mexico (17BS-19)
Download Imagegranitic rock and boojum trees, Baja, Mexico
Cretaceous granodiorite and Boojum trees (Fouquieria columnaris), central Baja California Sur Peninsula, Mexico (17BN-72)
Download ImageGranodiorite, S. Baja, Mexico (vertical)
Cretaceous granodiorite, Southern tip of the Baja California Sur Peninsula, Mexico (17BS-16)
Download ImageLeading edge of Fold-Thrust Belt, Montana
Leading edge of Fold-Thrust Belt at Sun River Canyon, Montana. The lower cliff consists of Mississippian Madison Limestone thrust over Jurassic Morrison Fm. and Cretaceous Blackleaf Formation, visible in the river bank. The upper cliff consists of Devonian and Mississippian carbonates thrust over the same. (190716-16)
Download ImageSevier Fold-Thrust Belt, Montana
Aerial view of leading edge of the Fold and thrust belt of northern Montana –that part called the “Disturbed Belt”, which consists of ridges of Devonian and Mississippian Limestone thrust over recessive Jurassic and Cretaceous rocks. (210612-111)
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