184 LJAS OF ENGLAND AND WALES: 
Stanwix Marls underlying the Lias only in the neighbourhood of 
Bellevue. He considered that these three sub-divisions of the 
New Red Series were all unconformable to each other. He has, 
however, admitted the jwssibility that the Stanwix Marls, which 
he groups as Keuper, may overlap the two lower formations 
(Kirklinton Sandstone and Gypseous Shales), and underlie the 
Lias throughout the area.* 
No evidence of Rhsetic Beds 5s forthcoming from any part of 
the area, and I searched carefully in the Drift-deposits, to see if 
any fragments had been preserved in them ; but without success. 
Nevertheless it appears to me most probable that they are repre- 
sented, when we bear in mind that they are nearly always present 
in other parts of this country where the Lias rests upon the New 
Red Series. At any rate the Great Orton Boring gives us a 
thickness of 210 feet for the RfafBtic Beds (if present) and zone of 
Ammonites planorbis. 
With regard to the extent of the Lias, Mr. Holmes has marked 
the boundary a little south of Great Orton, west of Aikton, and 
north of Kirk Bampton. All the known sections, as he remarks, 
are between Great Orton and Aikton ; but he infers that the 
Lias comes as near Carlisle as Bellevue, or a little nearer. 
* Quart. Journ. Geol. Soc., vol. xxxvii. pp. 294-297 ; Proc. Geol. Assoc., 
Vol. vii. pp. 417, &c.; and vol. xi. pp. 243,.&c. 
