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This roadcut, near Alexandria Bay, New York, exposes the "Great Unconformity" between the basal Cambrian Potsdam Sandstone and the underlying Precambrian gneisses of the Frontenac Arch. The unconformity is near the base of the roadcut and can be seen to preserve some evidence of paleotopography on the Cambri...
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A roadcut through a migmatitic gneiss in the Adirondacks.
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Or, rather, a folded gneiss. Near Edwards, New York.
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Rather large garnet in a rather small gneiss boulder (Tolland County, CT). The garnets seem to be associated with a vein of white minerals (feldspars, mostly) within the gneiss -- this boulder contains a rather large example (4-5 cm), as most of the local garnets are millimeter scale (0.1 - 1 cm in size).
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Garnets weathering out of a gneiss boulder (Tolland County, CT). Same boulder as share.gigapan.org/viewGigapan.php?id=11125, but different angle (and lighting, apparently - less issue with trees, more issue with overexposure, perhaps.)
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Garnets weathering out of a boulder of gneiss (Tolland County, CT). Tried to get nice morning light on the vein containing the reddish garnets - was hard with the trees, though... the leaves were almost as bad as the clouds!
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When I set this one up I was aiming to get a nice closeup of a shear zone. What I ended up with was a test of the Gigapan unit under extreme weather conditions. You can almost pick out the individual moment where the snow flurries suddenly turned into a whiteout. In hindsight, I'm amazed that the thing stitched toge...
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