BULL. DEPT. GEOL. UNIV. CAL. 



VOL. 6, PL, 3 



Fig. 1. — Thousand Creek Ridge, and eastern entrance to Thousand 

 Creek Canon, showing fault scarp and prominent exposures of Canon 

 Rhyolite, 



Fig. 2. — Thousand Creek Canon seen from the western or Virgin Valley 

 side. Thousand Creek Ridge in background composed of Canon Rhyolite. 

 Virgin Valley Beds in foreground. 



