23 
between Hatton and Warwick, and the latter at Coten 
End near this town, and at Cubbington on the north- 
east and Leamington on the east. The upper Red Marls 
are of considerable thickness (600 feet), and occupy 
some of the high table land between Knowle and Bir- 
mingham. The upper Keuper (not exceeding 25 feet) 
which succeeds is a variable, more or less, hard grey 
sandstone, divided by green and light-coloured mavrls, 
well represented by the following section on the side of the 
canal at Shrewley, four miles north-west of Warwick :*— 
1.—Green Marl.. .. .- «- » ee «+ Off. 8or4in. 
2,—Beds of grey and light-coloured fine-grained Sand- 
stone, divided by marl, with Estheria (Posidonia) minuta 
and ripple or current marks. In the middle occurs a 
coarse gritty sandstone, with white specks, made up of 
small pieces of quartz, and mica, which contains bones, 
teeth, and spines of Lophodus, a species of shark.. .. lft. 9in. 
3.—Green Marl... «20 «2 oe se) ee ee he ee Oft. din. 
4.—More fine-grained Sandstone, more or less ripple- " 
marked, with footsteps of Labyrinthodon Ra ee Want Cale 3in, 
5.—Green Marl, like No.3... oe ee ee ee Oft. Qin. 
6.—Hard, workable sandstone (bottom bed), the only 
good building stone of the locality, with imperfect casts 
of Estheria .. .. 2. ee es oe ee oe 3ft. 6in. 
7.—Thin beds of sandstone, divided by green marls, 
with remains of plants (Voltzia, Calamites, coniferous 
fruits, and fucoids). This is best seen at Rowington .. 10ft. Oin. 
8.—Red Marl. Bedshorizontal... .. -. ++ +- 8to 10ft. Oin 
The upper Keuper sandstone is by no means uniformly 
spread over the area occupied by the Trias, but owing to 
very extensive denudation occurs at irregular intervals, 
a wider mass being seen at Preston Bagot and east of 
Henley-in-Arden. Patches of it also occur south of 
Knowle, west of Withall, and south-east of Brown’s 
ee see ee a ee ei ee ee SS eae 
* In Murchison and Strickland’s sections they give 30 to 40 feet of upper Red Marl, 
Sandstone (upper Keuper) 20 feet, and lower Red Marl exposed I0 feet, but this sec« 
tion was taken more than thirty years ago, and I suspect was made from some old 
quarries now closed, which were formerly worked on Shrewley Common, and therefore 
differs somewhat from the one given above, which does not show any upper Red Marl 
in situ above the sandstones, but the Sandstones and associated. Marls are about the 
same relative thickness, In some places, as in the railway cutting near Henley, thin 
beds cf Gypsum occur in the Red Marls. 
