695 
ROCKS OF THE VALLEY OF THE CLWYD. 
Fig. 1.—Seetion across Silurian Rocks in the Valley of the Olywedog W. of Ruthin. 
N.E. 
W. 
Moel Ganol. Cyffylliog. Pontuchaf. Yr Hengoed: i aa 
y ; <—«f, i SOs H = H 
Ss ' 20° W.S.W ‘ ‘ eae. 
ae a: : 20° W. 10° W. 15° W.S.W. 10°S. ! 30° W. 25° Ww. om : 
NG 115°S.W. 20° W. at : ‘ Soe 
"* == 1 ' 74 zZ 
ZEEE i < : Sat Fee 
ZA ; = Eee ee : 
Z Heer eZ = 
ZE ene eee ZN 
3 of g a h* k ix m* Ha 
x. Basement-beds of Carboniferous, 
a. Greywacke, grey gritty sandstones, ) : 
b. Grey concretionary sandstones, with concentric Denbigh andes 
atniotomet iston Grit. 
¢c. Passage-beds not clearly seen. 
d. Dark, even-bedded, banded, sandy mudstones. | Denbigh and Con- 
é. Massive grey banded sandstone. iston Flags. 
Ff. Pale sandy mudstones. 
g. Rab and flagey shales. 
h. Fossiliferous flagey beds, 
k. Bedding less clear 
/. Fossiliferous flaggy beds, 
™m. am 
F. Fault. 
* Fossils. 
”? 
| 
e 
) 
enbigh and Coniston 
Flags. 
