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Close up of some of the breccia cemented by siliceous and iron/manganese oxide cements. Image brought to you by the Mid-Atlantic Geo-Image Collection (M.A.G.I.C.).
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- 364
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- 35
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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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- 157
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- 33
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Brecciated Quartzite in the Antietam Formation exposed along the west side of the Shenandoah River South of the Rt 50 bridge near Millwood Virginia. This image is part of the MAGIC (Mid Atlantic Geo-Image Collection) gigapan.com/galleries/10019/gigapans
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- 331
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- 31
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Close up of some of the breccia cemented by manganese and iron oxide cements. Image brought to you by the Mid-Atlantic Geo-Image Collection (M.A.G.I.C.).
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- 266
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- 30
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This is brecciated quartzite in the Cambrian Antietam formation of the Chilhowwe group in the Blue Ridge Province of Virginia. The Antietam Formation caps the transgressive clastic sequence of the Chilhowwe group and is interpreted as representing a beach/barrier environment. Also check out a few gigapans I made o...
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- 269
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- 30
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This is brecciated quartzite in the Cambrian Antietam formation of the Chilhowee group in the Blue Ridge Province of Virginia. The Antietam Formation caps the transgressive clastic sequence of the Chilhowwe group and is interpreted as representing a beach/barrier environment. Also check out a few gigapans I made o...
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- 252
- Explore Score
- 30
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Near the western margin of the Port Coldwell Alkali Complex, this roadcut exposes a beautiful example of an igneous intrusion breccia where blocks of early formed gabbro were frozen in the act of being engulfed by later, more felsic magmas of the complex.
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- 612
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- 26
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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 this sample's translucent features, click here: gigapan.com/gigapans/124815 Sample collected and contributed by Lee Gonzalez.
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- 609
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- 1
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Located behind the gift shop at the Princess Sodalite Mine in Bancroft, Ontario.
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- 405
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This sample was provided by Dr. Jay Kaufman of the University of Maryland.
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- 219
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- 1

