ON THE UPPER OLD RED SANDSTONE OF DURA DEN. 117 
- SITE OF 
ES AXCAVATIONS, 
0 ¥4, Yo % IMILE 
2 SS eee 
/ e qa 
| Lower Carboniferous. U3 Lee oe 
e 
AO eee HUA Basalt and Dolerite. 
— soe = Faults. 
) 
. 
Fig. 1.—Geological Sketch-map of the District surrounding Dura Den. 
