Near Lonton. 
In the Bed of 
the River be- 
low Winch- 
bridge. 
170 Professor SepGwick on the 
solidation, the present position of the dislocated and highly in- 
clined masses of rock is at once accounted for. I might here 
mention the granular texture of the limestone, and the indura- 
tion of the other beds in contact with the trap: but I will not 
attempt to describe phenomena which are exhibited more perfectly 
and more unequivocally in other localities. 
3. The sections exhibited in the banks of the Lune, near 
Lonton, afford very curious illustrations of the mechanical action of 
the trap. In the first section, (Pl. vit, Fig. 4.) it rests on a variety 
of hard siliceous sandstone (provincially called hazle) and it is 
surmounted by beds of slate clay and limestone. The beds in 
contact with it do not appear to be much changed in their tex- 
ture. It is imperfectly prismatic, and its lower surface shew, 
a tendency to a globular arrangement. The only fact of import- 
ance brought to light by this natural section, is the following: 
A portion of the hard sandstone is lifted up, at a considerable 
angle from its native bed, and entangled in the superincumbent 
trap. I am utterly unable to comprehend any explanation of 
this phenomenon, which does not inelude the supposition of a dis- 
tinct mechanical action. Without the support of the trap, the 
projecting mass of sandstone could not for a moment retain its 
present position. 
In the next section, (Pl. 1x. Fig. 1.) we have a repetition of 
the same phenomenon, a portion of the inferior hazle is bent up 
into the trap which forms the top of the escarpment. An ap- 
pearance very similar to that which is exposed in each of the twe 
last-mentioned sections, is described by Dr. Mac Culloch, in the 
second volume of the Geological Transactions, p. 305. 
4. I forbear to speak, in this place, of the enormous 
faults by which the whole of High Teesdale seems to be 
traversed; because it is impossible, by direct evidence, to esta- 
blish their connexion with the mechanical operations of the trap. 
