S.S. Johnson, P.C. Sweet, 6 x 9-inch soft cover book, 10 pages, two plates includes two folded 36 x 45-inch (approximate size) color 1:62,500-scale maps, three figures, 1969. This publication contains a text and magnetic and gravity data superimposed on two previously published geologic maps of Albemarle and Fluvanna counties (both at 1:62,500 scale) with cross-sections. The text includes chapters on the instrumentation and data reduction of both surveys and previous geophysical work. Interpretation of map features and how they relate to the geology of the areas.
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