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Gigapans

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  1. 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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  2. This GigaPan illustrates an exposure of the basal Cambrian Potsdam Sandstone nonconformably overlying Precambrian gneisses at the eastern edge of the Adirondack Mts uplift. My field assistants took time out from exploring this remarkable contact to pose for the GigaPan. Berti is standing directly on the unconformity ...