MARYLAND GEOLOGICAL SURVEY 



CAMBRIAN AND ORDOVICIAN, PLATE XII 



FlG. I. QUARRY IN UPPER PART OF CONOCOCHEAGUE LIMESTONE WITH SECURITY CEMENT 

 WORKS, SECURITY, MARYLAND, IN DISTANCE. 



FlG. 2. TYPICAL EXPOSURE OF THE LOWER PURE FINELY CONGLOMERATIC BEDS OF THE 

 STONEHENGE LIMESTONE ALONG NATIONAL HIGHWAY, JUST SOUTH OF FUNKSTOWN, 

 MARYLAND. 



