fgdc digital cartographic standard for geologic map symbolization color palette

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#AEB0AF #BDC2C2 #F1F1F1 #BDC0BF #000000

related tags: 000000 AEAFAF AEB0AF BDC0BF BDC2C2 BEBFBF BEC1C1 F1F1F1 cartographic cartography digital fgdc geologic gis map standard symbolization