368 



STRUCTURAL GEOLOGY OF NORTH AMERICA 



Td = Pojt-Olig. Dacrte 

 To=Oligocene? Pyroclostics 

 Tuo = U. Eocene & Ol.g? 

 Tue = U. Eocene Pyroclostics 

 Tme = Middle Eocene 

 Tim = L & M. Eocene 

 Tule = Upper L. Eocene 

 Tlte = Lower L Eocene 

 Ku = Upper Get. Und.v, 

 Kf=Fronher 



Klmr=Therniopoli* & Mowry 

 Jm = Momjon 

 Js = Sundonce 

 Rc = Chugwater 

 Ct=Tenjleep 

 Cm=Madison 

 €u = Cambrian Undiv. 

 pre-€ = pre- Cambrian 

 Pk=Paleozoic "Klippen" 



SECTION 1 



SW 



-^ Wiggins NE 



1 1,000 



T±~^~\- 10,000 



^^T^X^^Ty 





9,000 



8,000 



- 7,000 



Fig. 24.6. Cross sections of the Washakie Range at the south end of the Absaroka Mountains. Reproduced 

 from Love, 1939. 



tation to the effect that the Paleozoic remnants of Heart Mountain, 

 McCulloch Peaks, Logan Mountain, and Sheep Mountain are detached, 

 gravity slide blocks as represented on Fig 24.7. He recognizes a second 

 and immediately older thrust, the South Fork (mapped also as detached 



slide remnants) and the Logan and Sheep Mountain remnants to have 

 slid on top of the South Fork remnants. 



In broad outline the Heart Mountain fault of Wyoming is a nearly horizontal 

 thrust whose overriding sheet was derived from a source without any known 



