MONOGRAPH XXXII.PART II.FL. V. 



U.S. GEOLOGICAL SURVEY. 



tililmmroimru., 



Section IV 



CROSS SECTIONS SHOWN*"' MOUNT HOLMES BYSMATOLITH 



LEGEND 



C ARB0N J FER0U 5 DEVONIAN SILURIAN 



Cm 



Sj 



CAMBRIAN NEOCENE 



Scale or Miles 



Dacite- 

 porplqiy. 



dp 



a n p 



