by W.F. Giannini, 104 pages, 47 figures, 60 tables, 1991. During the period of March 1981 through November 1982, 466 carbonate-rock samples were collected from the northern Virginia area covered by the Winchester and Frederick 1:100,000 scale maps. The results for 366 carbonate-rock analyses by other writers during the period from 1884 through 1985 supplement the present data. Information in this publication is presented to inform private individuals, companies, consultants and governmental agencies about carbonate-rock resources and to indicate general areas where potential economic resources occur.
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