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A garnet-bearing schist -- a wee bit underexposed... :(
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The last Gigapan of the road trip from Pennsylvania to California came a day after the Tetons at Lake Tahoe. After leaving the Tetons we passed through Idaho Falls then crossed down in to northern Nevada. We drove as far as we could before spending the night in a hotel near a small town called Battle Mountain. Nor...
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Looking downstream on the Potomac River from the southern end of Billy Goat Trail, loop A, in Chesapeake and Ohio Canal National Historical Park, Maryland. The other side of the river is Virginia. On the hill is Madeira School, and the confluence with Difficult Run is directly across the river in the narrow valley. Roc...
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An exposure of the Mather Gorge Formation, downstream of the "emergency exit" trail off Billy Goat Trail loop A, and upstream of the first sandy beach. Immediately upstream of this outcrop is a prominent belt of amphibolite, and there are large angular amphibolite boudin blocks embedded in this strange rock. ...
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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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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), this antiform is the result of ancient mountain-building processes. A fold that goes up in the middle is called an "antiform," and if there is stratigr...
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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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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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- 8
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Gneiss / pegmatite ledges form pools along the Natchaug River in northeastern Connecticut. We didn't hike the entire way back to the swimming hole known as Diana's Pool (this is along the hike) - the outcrop here was too photogenic (and we had other sites to visit!)
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A detail of the west face of the "Snake" roadcut through marbles of the Adirondack lowlands.
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