1^1 



I i 



LEGEND 



Bearer Moiuitaia sedmxenis 



Bv 



Beovej- Mcraataia ;vDlcaiiics 



«JirfeA7Ae cxnxl, bttsaZt 



Pejid D'OfealLe liinjestanfi 



wAite to hhjijiK,Tnas!.-ive mca-VL 



PD 

 PendD'Oreaie schist 



A\ 



LojioStai-foxanarion 



Beelive fomin(i.iii_ 



So 



I 



Rp 



Ripple forauatian 



D ewdiuey faronH tioiL 



wneipfl aitaj'txitp , wztJi- amgltimierate hiijtn-hficlf, 



fTri 



thick hefls ; siJ^oT^nate, & 



Moxik f ox'Jixatiozi- 



aitefna-tijiff pKylJH'es and Tn.eteanjorphtis&d^S'c'itistose) 

 ift^S , xrtfuJstoTuss , and. c/Jiu^Tpnier'at&s f ^rey caUnrrs . 



<< 



Itene vplcsmic foianatiorrL 



ihick. i'lows of pyroncvrce caudjcsites. 

 with strni^ -pyroclotstics 



Intrusive 



Salnirai rjw r itLoiizonite 



Symbols 



Geological "boundaiy 



GlacLaL sttdae 



II7°50' 



(SELKIRK S ) 



Sheet W9 r. 



II7oo' 



I D AHO 



I1730' 



TopoffT-OffTi^ fi'OTTv surveys inade by 

 the. Soicndary Co, 



^Uiij&:Sam^what laim^^ous, ijunapv narrow dikes ofminetie, 



acttzfitf the schJ.ytsTJt. theJ'end^DOreiHRvaUjeyfarenotshomL. 



Section alon^ line ABC 



GEOLOGY OF THE FORTY-NINTH PARALLEL, ByR.A.Daly. 



Scale: e26oo = 0-9864 Statute Miles to lliick 



Miles 



ContovT' intervaL, 500 feet 



Seprintjed. by permission of Chjjef' Astronomer, 

 to accompar^' Geological Survey Memoir N?38 



