Physiography of Bulla Area. 349» 



ig. 2.— Photograph of the junction of the Upper and Lower Series: 

 of Newer Basalt, near the Canyon, Bulla. The Lower 

 Series is resting on grits, which show slight step-faulting. 

 The Upper Series is seen resting on the weathered surface 

 of the Lower Series. The junction of the two basalts is- 

 indicated by xx on the photograph. 



l^etent Alluvium 



Ka,inozoic GonQ,loniera,1ie Redi-striDuted on Spurs. 



Gi'a-nod lorite Detritus on Newer Ba/sa.lt 



Upper Series of Newer BcLSa/lt 



G-irits etc between Upper and Lower Serifts> 

 Lowe*' Series of Newer Basd/lt 



Euca-I;yptu5 Lea,F 3ecls 



Pre- newer- bcuscbl tic T^iver Sill 



Straitifieci Ka-inozoic Grits 



Older Ba.sa.lt a-nd ^a/sic Bjk'es 

 Pre-older-ba^saltic KiverSilt a'nd CoM^lomevd/tei 

 Lower Silai-ia.n Pediments 



Upper Ordovicia/n Sediments 

 Granodiorite a,nd Acid Byke^ (])evonia/n\* 



Rocks of the Bulla-S^^deKiUm Area Arranged ir> CfVonulo^ical Columm 



