HUGHES : INGLEBOROUGH. 
363 
I have already pointed out, on a plan (Fig. 2), where the 
basement bed of the Silurian is seen among the roots of Ingle- 
borough, and where it and the overlying parts of the series would 
probably be found if we could peel off all the post Silurian strata 
of the district. In explaining the relations of the uppermost 
Bala, I have also given diagrammatic sections showing the 
mode of occurrence of the basement bed of the overlying Silurian. 
In Fig. 3 and in Fig. 4* the conglomerate " h " represents it. 
About 60 yards north of Dam House Bridge, near Austwick, 
the faults shown in Figs. 3 and 4 cross the stream at a small 
angle to the strike of the beds, and somewhat obscure one of 
the most important sections in the whole district. On the north 
or downthrow side the basement bed of the Silurian forms a 
cl c It L- a . 
Fig. .S. 
a. Striped sandy sliale. 
h. Conglomerate. 
c. Cleaved niudstone. 
d. Felspathic ash-like beds, similar to tho.se seen south of the barn 
in the field on the west. 
small chff running through the little wood on the X.X.W., it 
is seen in the fields below South-thwaite, and disappears under 
the Mountain Limestone of Xorber. 
The basement conglomerate is here thicker and coarser 
than anywhere else in the district, and might well ref)ay 
close work. The maximum thickness of the basement con- 
glomerate is about ten feet where the top and bottom can be 
seen. South of South-thwaite large blocks are seen lying about 
or collected off the land into heaps, but these do not occur along 
*For convenience these Figures are reprinted from Proc. Yorks. Geol. 
and Polytec. 8oc., Vol. xiv., pp. 3.32, 33o, and 33G. 
