File:The Quarterly journal of the Geological Society of London (12895139683).jpg

432
PKOCEEDINGS OF THE GEOLOGICAL SOCIETY. .June 22,
where the surface of the limestone is beautifully scored by glacial
scratchings, and is strewn with sand and striated pebbles, sup-
porting the patch of Lias which occurs here, and which is also
covered with sand and transported blocks. At Linkswood, the
locality where the cutting in the Elgin and Rothes Railway exposes
the sandstone supporting the limestone (cornstone), Dr. Gordon
pointed out to me a patch of Lias occurring under precisely iden-
tical circumstances with that at Linksfield, which was described many
j^ears ago by Captain Brickenden

• .

The late Mr. Patrick Duff also,
in his account of the geology of Moray, points out the contorted forms
which the beds of this patch of Lias assume, doubtless the result of
pressure from ice-action, while the underlying limestone (cornstone)
has a uniform S.S.E. dip at a low angle. These Lias patches,
wherever they are seen in the Elgin district, bear no relation to the
limestone (cornstone). They have underneath them glacial drift,
and they owe their present position to Post-tertiary operations.
§ 3. Section on the Findhorn.
Westwards from the area just described, in the course of the river
Findhorn, good exposures of rock are seen. Portions of the strata
on this river are described in detail by Sir R. I. Murchi son, from the
Metamorphic rocks to the higher limestones which are now worked
at Cothallt.
In a matter where the age of certain strata occupying a position
superior to sandstones yielding Holoptychius is under consideration,
it is only necessary to indicate a well-marked horizon, and to trace
the sequence from this upwards.
s.
Fig. 2.
Raraplet. b Cothall.
-Section on the River Findhorn (2 miles).
Bridge of Findhorn.
a. Till.
b. Limestone (cornstone).
c. Reptiliferous sandstone
d. Pebbly sandstones and conglomerates.
e. Yellow sandstones.
South of Cothall, for about a quarter of a mile, a continuous
section is exposed either on one or the other side of the river
Findhorn, the Ramplet Cliff affording a fine exhibition of some of
the strata which underlie the Cothall limestone. The dip is N.N.W.
at 10°, being identical with that of the rocks south of Elgin

and
here we have an horizon parallel with a well-known position in the
section from the Metamorphic rocks northwards to Elgin (see fig. 1).
In the continuous section south of the Cothall limestone, the
lowest beds consist of yellow sandstones, yielding the same form of
Holoptychius as that obtained from the Pluscarden and Bishops

Quart. Journ. Geol. Soc. vol. vii. p. 289. t Ibid. pp. 422,