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The same BIF seen in cross section in another roadcut exposure that's uploading, this is the top surface of that exposure where the iron formation has been glacially sculpted and polished.
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On the drive from Hays, Kansas to Dinosaur National Monument, Douglas Pass is definitely one of the high points (pun intended). The Fort Hays State University Geology Summer Field Camp makes a stop here each summer to observe the landslide activity (at left) and the strata of the Eocene Green River Formation exposed ...
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This GigaPan is a detail of the Taconic Angular Unconformity exposed near the east end of the roadcut illustrated in the GigaPan of the Lower Helderberg Group (). The Ordovician Austin Glen Formation (flysch, right) lies below the angular unconformity and the Silurian Rondout formation constitutes the relatively more ...
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Climbers arise and prepare to break camp at the Devils Tower National Monument Campground.
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A formation of monzogranite in the Mojave Desert at the north edge of the Hexie Mountains a couple of miles south of Arch Rock in Joshua Tree National Park.
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- 1978
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Montserrat is a mountain near Barcelona, in Catalonia. It is the site of a Benedictine abbey, Santa Maria de Montserrat, which hosts the Virgin of Montserrat sanctuary and which is identified by some [1] with the location of the Holy Grail in Arthurian myth. "Montserrat" literally means "jagged (serra...
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A Point of Geological Interest, as the highway signs describe it, just hints at the geological lessons that are laid bare here. The roadcuts that were exposed where Interstate 70 traverses the Dakota Hogback, just before rising out of Denver's western suburbs and rising into the Front Range proper, are a showcase of M...
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Just east of the San Rafael Swell this hill is composed entirely of sedimentary rocks of the dinosaur-bearing Jurassic Morrison Formation.
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Shot from a hill near the west edge of Green River, Wyoming, this GigaPan features outcrops of the Eocene lacustrine deposits that make up the Green River Formation, as well as the modern day fluvial Green River, itself. Can you find where Interstate 80 passes through the easternmost of the three sets of tunnels alo...
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The cliff is composed of Jurassic Summerville Formation - interlayered shale and gypsum beds. Cutting across this are large veins of hydrothermally remobilized gypsum. On a smaller scale there are many more smaller gypsum veins cutting the entire formation.
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