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Cambrian-aged Harpers Formation meta-mudstone exposed on the property of Arlington, Virginia's outdoor education facility, the Phoebe Hall Knipling Outdoor Lab.
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- 274
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- 36
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Carved from the Precambrian Harney Peak Granite by Gutzon Borglum and a host of stonemasons, the Mount Rushmore memorial portrays the likenesses of Presidents George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln.
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- 8262
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- 12
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Just a few yards up the road from www.gigapan.org/gigapans/47766/ ... Hand sample pan: gigapan.org/gigapans/72884/ Thin section: gigapan.org/gigapans/72751/
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- 1546
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- 8
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North wall of lower Big Thompson Canyon, east of Estes Park, Colorado. For more detail of the folded schists exposed in the roadcut in the foreground see: www.gigapan.org/viewGigapan.php?id=5437
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- 4040
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Quaternary conglomerate atop schist.
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- 2847
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This is a view of the mine dump of the Dan Patch Pegmatite Mine, just west of Keystone, South Dakota. The light colored pegmatite rock is composed primarily of large crystals of quartz, albite feldspar, and muscovite, with lesser amounts of tourmaline and beryl. The pegmatite is an igneous rock that was intrusive int...
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- 2542
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- 1
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A closer view of the folded schists exposed in a roadcut in lower Big Thompson Canyon, east of Estes Park, Colorado. Edi and Berti make another cameo for scale - see if you can find them. For a wider view of this area see: www.gigapan.org/viewGigapan.php?id=5433
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- 2098
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- 1
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I don't know the exact locality for this sample as I reclaimed off the rock pile at UW-Madison.
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- 1472
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- 1
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Willimantic Dome outcrop along Route 6 in Coventry, CT. (Series of Gneisses and Schists, containing lots of nice looking garnets.)
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- 1332
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- 1
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The off/on ramp for Route 6 at Route 32 in Willimantic, CT exposes some gneiss cliffs...
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- 1092
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- 1
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