IIS GEOLOr.lCAL SURVEY 



MONOGRAPH XXXVI PL I I 



GEOLOGICAL MAP OF SJ-Rgeox UlVli] 



SCALE 1 IN<->1- ' '"'■' *'^'"-H IXTKHVA.. 20 Pli 



■ _ .A utriltf" or tlip wf. fv,., 



3rop8 ^^^^hou^ or 

 crops with slHli 



AKCHEAK 



Grai\ite 



n TONGUK 



^v...,- - ^j ■■'" '■■^IKKVAl. 20PliKT 



* Outcrops mthoul obseivd s'r^^^"",,',. T 2"trTOH8 «ju, rfoUjraiincd »lrike mid dif 



TOutorops with si"'!""" ""'"irALK «>' StlOS ! ,^7."' >""' ''"""■■■•d ■■' "-oek. 



ARCHEAX _ IISj^eS^ . PI.KISTOfKNE 



Grai\ite Stuij 



