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Comments on Gigapan: Antietam Breccia 3

  2. This is an outcrop of brecciated quartzite located along the Shenendoah River near Ashby Gap Virginia. The quartzite is from the Cambrian Antietam formattion, the upper most clastic unit in the Blue Ridge stratigraphic stack. The Antietam Formation is a clean orthoquartzite containing skolithos trace fossils and is int...

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