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Spacer ImageInformation Circular 016: Field Trip to the Igneous Rocks of Augusta, Rockingham, Highland, and Bath Counties, Virginia
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by R.W. Johnson, Jr., Charles Milton, J.M. Dennison, 6 x 9-inch soft-cover book, 68 pages, 1 plate includes folded 15.5 x 16-inch black and white sketch map, 26 figures, 3 tables, 1971. Publication describes a two-day field trip of the Geological Society of America held October 30-31, 1971. The first day of the trip included visits to representative localities of the alkalic complex of Augusta County, with stops that showed Jurassic nepheline-natrolite syenites and teschenites with basement xenoliths. On the second day, the trip included localities of the Tioga Bentonite of Devonian age in Highland County.
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