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- Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC by Callan Bentley
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Strained metaconglomerate that crops out in a stream in Klingle Valley, DC. Note the prominent granite intrusion. PINK = Granite contact BLUE = Sericite after staurolite pseudomorphs YELLOW = Outlines of stretched clasts within the metaconglomerate GREEN = Edges of lichens growing on the surface of the outcrop ...
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- 48
- Klingle Valley metaconglomerate, Laurel Formation, Rock Creek Shear Zone, Washington, DC by Callan Bentley
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Strained metaconglomerate that crops out in a stream in Klingle Valley, DC. Note the prominent granite intrusion. Compare with this annotated view: gigapan.com/gigapans/128969 Or view them both simultaneously in the comparative viewer from GIGAmacro.com: www.gigamacro.com/gigamacro_viewer/gigama
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- Lamprophyre Dikes on the Virginia Side, Visible From the Billy Goat Trail by Robin Rohrback-Schiavone
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The Acadian Orogeny took place mainly to the northeast of here. (As the name implies, Acadian-aged rocks are well-exposed in Acadia National Park in coastal Maine.) Along the Billy Goat Trail, they left one set of important structures: a series of four parallel dikes filled with the igneous rock called lamprophyre. ("L...
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Granitic dikes (veins) criss-crossing granite. Image made as part of the MAGIC project (Mid-Atlantic Geo-Imagery Collection) using Northern Virginia Community College's gigamacro rig, as seen here: gigamacro.com/gigapixel-macro-imaging-system
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Located west of Bancroft, Ontario. Evidently this is Site 11 in somebody's field guide.
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The Clemson University campus as seen from the North Dike on Lake Hartwell. Landmarks Memorial Stadium (Death Valley), Littlejohn Coliseum, and Tillman Hall are all clearly visible.
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Exposed on the northern bank of the Chesapeake and Ohio Canal near the downstream end of "Widewater" (upstream of the Old Anglers Inn access point), these rocks are the result of ancient mountain-building processes. These rocks, the Mather Gorge Formation, were originally deposited as layers of sand and mud i...
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Whitman College geologists investigate beach outcrops of invasive basaltic dikes and sills just south of Seal Rock State Park on Oregon coast
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Taken from beside the south dike.
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The Quabbin Reservoir is the main source of drinking water for the City of Boston. It was made from the taking or four towns in the 1930's, and has gradually involved into a majestic near wilderness. The Goodnough Dike is one of the two main structures holding back the water. This panorama was made with a D3x on a c...
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