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Group: Mid-Atlantic Geo-Image Collection (M.A.G.I.C.)

M.A.G.I.C. Hand Samples

7d46d4a8a88be1476510a8985959a08e

135 GigaPansViews

Geology you can hold in your hand.

Created by
Robin Rohrback-Schiavone
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0.385294 gigapixels
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194
Dated added
November 13, 2012
Categories
geology, macro, nature
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  1. 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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  2. 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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  3. 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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  5. Myrtle Beach, a tributary of the Smith River, lies 15 minutes north of Gasquet, CA in the Six Rivers National Forest. This gravel lay right at that day's water line. Compare it with the finer gravel farther from the water line here: gigapan.com/gigapans/125914

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  6. Kirby Cove, opposite San Francisco in the Marin Headlands, is a coarse sand beach bounded on one side by pillow basalts and on the other by tightly folded Franciscan chert.

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  7. Calcite displays at least three different crystal habits and two different colors on one small hunk of limestone. Collected in the Keyser Limestone along the Great Allegheny Passage in La Vale, MD.

  8. Dr. Jay Kaufman of the University of Maryland, who provided this sample, interprets these to be microbial sulfate reduction spots on the bedding surface of the Neoproterozoic (Cryogenian) Santa Helena Formation of the Bambui Group in south-central Brazil. The microbial spots show clear cores and cortices, which notabl...

  9. Myrtle Beach, a tributary of the Smith River, lies 15 minutes north of Gasquet, CA in the Six Rivers National Forest. This gravel lay 15' above that day's water line. Compare it with the coarser gravel closer to the water line here: gigapan.com/gigapans/125977

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  10. Sand from Scientists' Cliffs, Maryland. For more information on Scientists' Cliffs, including several gigapans of outcrops there, click here: blogs.agu.org/mountainbeltway/2013/03/05/documenting-doomed-outcrops-scientists-cliffs-maryland Will open in a new tab or window/

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