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This is a highly deformed section of the Devonian Foreknobs Formation exposed near Bergton Va. The Foreknobs Formation ( formerly known as the Chemung) is a mixed package of brownish red to grey sandstone siltstone shale and minor conglomerate. This formation is part of the Catskill Delta, a shallowing upward sequence...
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Anticline-Syncline pair exposed in the Bear Valley Coal Mine, near Shamokin, Pennsylvania - shot from atop the Whaleback.
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A group of near-vertical fault planes. Offset here is probably related to the Basin and Range faulting in the region.
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The vitrophyre is the black, obsidian-like band at the left of the roadcut. There are also an interesting pair of faults near the center of the image. I had hoped to catch this roadcut a bit earlier in the day, but I only got here a little later than I wanted to. Nevertheless, the lighting wasn't as bad as I had f...
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A closeup of the Genoa Fault shows Quaternary alluvium on the right downfaulted against Sierran granite on the left. The fault motion of the footwall block (left) moving up relative to the headwall block (right) makes this a normal fault. Since unconsolidated Quaternary sediments are involved in the faulting, the fault...
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Failles Vivantes 2011
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Here is a new outcrop I discovered along the newest unfinished portion of Corridor H in WV. I think this is likely the Tonoloway formation. You can see several good normal faults in this gigapan which are dipping to the east. Image made as part of the MAGIC project (Mid Atlantic Geo-Image Collection)
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The Palo Colorado Fault crops out behind and underneath the stairs in this view of the sea cliff of Garrapata Beach in Big Sur, California. Zooming in on the fault zone reveals slickensides on the granites to the left (northeast side of the fault), and bedding on the turbidite sedimentary rocks to the right (southwest ...
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Failles Vivantes 2011
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This is the range-front fault on the eastern side of the Sierra Nevada in Genoa, Nevada. The smooth grey granite face is the fault plane. In the distance down-dropped alluvial material is visible faulted right up against the fault plane. The Sierra Nevada (left side) is moving up relative the Carson Valley (right side)...
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