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This is a limestone quarry, currently run by the Highway Materials, Inc. Formerly known as Corson's quarry, it is claimed to the oldest continuously run quarry in the USA, and perhaps the oldest continuosly run indistrial operation in the USA. Nearby quarries existed from William Penn times. Correspondence exist betwe...
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- 15
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- 7609
- Explore Score
- 109
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Normal fault in the Fort Hays member of the Cretaceous Niobrara Formation, south of Stockton, Kansas. These chalk beds were originally deposited in the shallow Western Interior Seaway about 80 million years ago. The thick beds of the Fort Hays member are extensively bioturbated. Faulting is post-Cretaceous and pre-Q...
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- 5
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- 3
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- 7379
- Explore Score
- 65
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- Kink banding in Laurel Formation of Rock Creek Shear Zone, Broad Branch, Washington, DC by Callan Bentley
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An exposure of highly foliated metasedimentary rock (metagraywacke) of the Laurel Formation in Broad Branch, part of Rock Creek Park, in northwest Washington, DC.
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- 39
- Kink banding in Laurel Formation of Rock Creek Shear Zone, Broad Branch, Washington, DC by Callan Bentley
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An exposure of highly foliated metasedimentary rock (metagraywacke) of the Laurel Formation in Broad Branch, part of Rock Creek Park, in northwest Washington, DC.
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- 240
- Explore Score
- 35
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Close up of some of the breccia cemented by siliceous and iron/manganese oxide cements. Image brought to you by the Mid-Atlantic Geo-Image Collection (M.A.G.I.C.).
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- 378
- Explore Score
- 35
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Close up of some of the breccia cemented by manganese and iron oxide cements. Image brought to you by the Mid-Atlantic Geo-Image Collection (M.A.G.I.C.).
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- 275
- Explore Score
- 30
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Cross-sectional view of inclined Martinsburg Formation beds (020°, 62° right hand rule). Take a look and ask yourself: What's the structure doing here? :)
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- 104
- Explore Score
- 28
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West Virginia, Corridor H. Can you find fault in this GigaPan? See also: gigapan.com/gigapans/111249 gigapan.com/gigapans/98672
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- 106
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- 25
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The low scarp just beyond my Jeep marks the trace of the surface rupture of the 1872 Lone Pine M~7.8 Earthquake (en.wikipedia.org/wiki/1872_Lone_Pine_earthquake
). The quake occured on a normal fault that bounds the east side of the Alabama Hills and displaced the surface here over 10 vertical feet - in addition...-
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- 3
- Total Views
- 1942
- Explore Score
- 13
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Stats
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- Total Views
- 2588
- Explore Score
- 1
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