IISCELIANEOUS COLLECTIONS 



c 



Ssh 



1 * .,ei -.nrl the h"<;s\'^^I.Voi>*Jp^ca!il^''' ''<^»eatir[he\'lL'u'^ ^^'"''l''; ''"^'"v O.uoo feet of the I'nkar and Chuar series 

 . Cambrtan ( V ^Tapeats f":.'f;'"|' ,;'e Mgonkian ^ J J <l*Sd^I' ?"'' l^^«Jectin/ ht'il"- . '^ '^'^ sandstones of the Unkar series (Cn) stand o 

 n plate 42 and the highest beds f ^he .ug ,,,inds i" »" o„UT " ^"nkoweap. Fvef v,. 1 ''"'^^ between them. To the north the sandstones, shales 

 ^Js) sandstone as the o"\"°Pp°f 'j'lS'on in the CanV^ J. Everywhere erosion planed these fortnations down nearly to a level 

 Kposed on the Nvest side of the Grand Cany ao'»'^ V VieVt'.^"^^ of the A.„„.,,.:„.. 



Unconformable contact between ihi 

 exposed between the Archean as seen ... 

 beneath the clifTs of Cambrian (T — Tapcc..., — --- 

 the Chuar series (.Ch) are beautifully exposed on tne ...... --^ , 



gressing Middle Cambrian seas covered them with Us beach sands^^^^^^ 3,„dst 

 The line of unconformity (.^r) at the base of the ta^nbnan W P^^ Coloradc 



The locality is on the north and west sides of the In ana .^ai.yu 



«*^.tc&S; 



and limestones of 

 before the trans- 



-"Bui.Kian (r» = Unkar) 

 Colorado River flowii 



vhich it rests, 

 rth bends to the 



