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U.S. Geological Survey Publications Warehouse · 2011-04-18 · Sk 10 60 103 Left-hand bar represents granitic rocks; middle bar metamorphic foliated rocks; right-hand bar, limestone

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Page 1: U.S. Geological Survey Publications Warehouse · 2011-04-18 · Sk 10 60 103 Left-hand bar represents granitic rocks; middle bar metamorphic foliated rocks; right-hand bar, limestone