19 



Sec. Iran Great Bav ScPrairU dt ( him W.S.W. KJi .R. 



MM Riff 

 i tfarvtits 



Sfrtipn frum Prairie de Chirn to Cot/an df I*rairit N.W S.E. 



Granite Granite Reds of alternating Limestone and 



j; Stin/Lftime of the Cai-bonifrrmisLimtrtcmf 



