MARYLAND GEOLOGICAL SURVEY 



CAMBRIAN AND GflDOVJtJIAN, 



IRON-STAINED CONTORTED SANDSTONE OF WAYNESBORO FORMATION. THE UPPER FIGURE 

 REPRESENTS THE USUAL ASPECT OF THE ROCK. THE CAVITIES IN THE SANDSTONE ARE COVERED 

 BY DRUSY QUARTZ AS SHOWN IN THE FIGURE TO THE LEFT (X 2) OR BY BEAUTIFUL MINUTE 

 CRYSTALS OF QUARTZ ILLUSTRATED IN FIGURE TO RIGHT (X 6). 



