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The Keyser Limestone is the lowest formation of the late Silurian to early Devonian Helderburg Group. It records stable platform deposits which accumulated in the quiet period between the Taconian and Acadian orogenies. This sample was collected and contributed by Dr. Michael Mengason.
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Also known as oolites or ooliths, these little geologic Gobstoppers form in shallow, supersaturated, agitated water far from continental sediment sources. They start as a tiny grain of calcium carbonate, usually calcite or aragonite. As they roll and tumble in the waves, they gradually build up layer after layer of ...
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- 321
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- 62
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Three columns, seven rows, and forty-nine focal depths should not result in a pinched, misshapen thing like this. Here's what I was trying to do: gigapan.com/gigapans/124345
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- 119
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- 59
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Teeming with garnets big and small, fresh and weathered, the Setters Schist is a muscovite schist metamorphosed from a pelitic protolith in (presumably) the Taconian orogeny. It also features staurolite, which is present in this sample, and kyanite, which isn't. Sample collected in Sparks, MD. Image made as part ...
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- 473
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- 46
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I got bored and gigapanned my aquarium. For the record, all of the fish in there (two powder blue dwarf gouramis, five cherry barbs, one bristlenose pleco, and two mystery snails) are intact, not just random fish parts floating around.
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- 945
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- 46
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I was trying to shoot a petri dish full of ooids with our GIGAmacro system. I had my field of view set correctly, so I don't have the faintest idea what happened to cause all those edge artifacts and general basket-weave appearance. It might be worth noting is that this marks the point when I learned about flash val...
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- 100
- Explore Score
- 46
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Eocene-aged basalt columns exposed on Skinners Butte in Eugene, OR.
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- 191
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- 44
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- 271
- Explore Score
- 39
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Volcaniclastic breccia from the May 18, 1980 eruption of Mount. St. Helens. Found approximately four miles northwest of Toutle, WA. To explore all of this sample's features, click here: gigapan.com/gigapans/121349 Sample collected and contributed by Lee Gonzalez.
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- 159
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- 33
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Devil's Racecourse in Ft. Ritchie, MD is a 700-meter-long blockfield created when the area experienced a periglacial climate during the Pleistocene. It is thought that boulders of Weverton quartzite from South Mountain on the west and Catoctin metabasalt from the east weathered out of their respective mountains an...
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- 1
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- 303
- Explore Score
- 33

