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Sandstone sea cliffs, Oregon
Miocene Astoria Formation along base of sea cliff and road at Hug Point, Oregon. (180812-63)
Download ImageContorted Miocene sandstone
Tightly folded Astoria Formation near Hug Point, Oregon. (180812-50)
Download ImageLandslide scar and toe, Oregon Coast
Small landslide toe near Hug Point along the Oregon Coast. (180812-27)
Download ImageHeadlands near Hug Point, Oregon (Pan)
View northward past Hug Point to Ecola Point, Oregon Coast. Note basaltic sill and small sea cave (180812-26)
Download ImageCross-bedded sandstone, Oregon
Cross-bedded, coarse-grained sandstone of the Miocene Astoria Formation, Hug Point, Oregon. (180812-18)
Download ImageContorted Miocene sandstone
Tightly folded Astoria Formation near Hug Point, Oregon. (180812-15)
Download ImageBasaltic dike intruding basalt (Vertical)
Basaltic dike intruding basalt, Cape Perpetua, Oregon. Pocket knife for scale. (180805-5)
Download ImageEdge of basalt dike: chilled margin, baked zone
Basalt dike (left) intruding basalt flow (right). The dike gets finer grained towards the contact (chilled margin) whereas the country rock shows a dark-colored baked zone along the edge of the dike. Cape Perpetua, Oregon. (180805-4c)
Download ImageEdge of basalt dike: chilled margin, baked zone
Basalt dike (left) intruding basalt flow (right). The dike shows a subtle decrease in grain size towards the contact (chilled margin) whereas the country rock shows a dark-colored baked zone along the edge of the dike. Cape Perpetua, Oregon. (180805-4)
Download ImageIntrusive sill and contact metamorphism (vertical)
Diorite sill and bleached reaction zone of contact metamorphism in the adjacent country rock-Purcell Sill intruding Proterozoic Helena Fm, Glacier National Park, Montana. Sill is about 2 meters thick. (4GlD-016)
Download ImageIntrusive sill and contact metamorphism
Diorite sill and bleached reaction zone of contact metamorphism in the adjacent country rock-Purcell Sill intruding Proterozoic Helena Fm, Glacier National Park, Montana. Sill is about 2 meters thick. (4GlD-015)
Download ImageStromatolites and glacial striations
Proterozoic stromatolites heads and glacial striations. Helena Formation, Glacier National Park, Montana. (4GlD-014)
Download ImageStaurolite “cross” in schist (square)
Staurolite crystals in schist. Photo is about 6cm across. (180427-26)
Download ImageSeed Fern fossils-Pennsylvanian
Lower Pennsylvanian plant fossils in shale: Neuropteris, a seed fern. Image is about 10 cm across. (180427-23)
Download ImageFossils of Eurypterus remipes
Eurypterus remipes. Rock is about 12 cm across bottom. (180427-21)
Download ImageMalachite “stacks”
Finger-like Malachite crystals deposited at mineralization vents. Photo is about 20 cm high. (180427-18)
Download ImageDeformed metaconglomerate
Deformed metaconglomerate. Quartzite clasts show top-left kinematic indicators (sigma porphyroclasts) From the rock garden of Appalachian State University. (180427-17)
Download ImageDeformed metaconglomerate, xy, xz planes
Deformed metaconglomerate, showing both the xy plane (top, with penny) and xz plane of the strain ellipsoid. From the rock garden of Appalachian State University. (180427-16)
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Sea stacks and uplifted marine terrace (Pan)
Sea stacks and uplifted marine terrace, Bandon Beach, Oregon coast. (140829-80)
Download ImageConcretions in sandstone (vertical)
Concretions in sandstone of Eocene Coaledo Formation, Oregon. Penny for scale. (140829-44)
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