U. S. GEOLOGICAL SURVEY 
BULLETIN NO. 217 PL. 
»> 
**-wr**U s"> * 
A. DRIBLET CONE OR OVEN, JORDAN CRATERS, OREGON. 
if:.. 52^%* . 
pi 
% 
B« ** 
Illi 
^ 
'■ww^x.. i£P*Z 
KS^ 
fJi^' ; ,: 
B. DRIBLET CONE, DIAMOND CRATERS, OREGON. 
