In general the surface is a sheet of lava of recent 

 flow, regarded by Waring as probably of Pleistocene 

 Age. It is considerably Ijroken by falls and by ero- 

 sions of streams from the melting snows on the slopes 

 of Warner and Steens Mountains and from Beatty 

 Butte. The surface is covered with loose lava frag- 

 ments but in general the process of soil formation has 

 not proceeded far. There are several alkaline sinks of 

 playas, the most prominent of which are Guano Lake, 

 Desert Lake and Jack's Lake. 



The springs at the heads of Rock Creek and 

 Warner Creek and the water holes along the courses 

 of these streams ])efore thev sink and the large water 

 hole near Rock Creek near Section 20 T. 34 S. R. 27 E. 

 and the Hot Springs in T. 35 S. R. 26 E., are almost the 

 sole ijermanent sources of water during the dry season. 



The slopes of Warner Mountains are rough and 

 have extensive growths of quaking aspen and a very 

 small amount of yellow pine and native trees. The 



^ — ^-* --PPIiii*^-'^?^*'**^- 



P, 1!I.j24 



Tyi'ical of T. S. 3r> AND 'Mi S. It. 26 K. Black Saok and Moixtaix Mahooany. 

 Ix 1918, 20 AxTELiU'K Wkrk CiirxTKK IX Tins ("LUMr ok Maho(;axy. 



91 



