English: Plate XLII from The Origin and Relations of Central Maryland Granites (Extract from the 15th Annual Report of the U. S. Geologic Survey, 1893-94) by Charles Rollin Keyes, 1895. Caption is "View of Waltersville Quarry, near Woodstock, Maryland, showing vertical and horizontal systems of jointing." The granite is the Woodstock Quartz Monzonite, and the quarry was in Granite, formerly known as Waltersville.
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(Original text: Original publication: Keyes, Charles Rollin, 1895, The Origin and Relations of Central Maryland Granites (Extract from the 15th Annual Report of the U. S. Geologic Survey, 1893-94). Washington Government Printing Office.
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{{Information |Description = Plate XLII from The Origin and Relations of Central Maryland Granites (Extract from the 15th Annual Report of the U. S. Geologic Survey, 1893-94) by Charles Rollin Keyes, 1895. Caption is "View of Waltersville Quarry, near...
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