498 J. Shipman — Bunter Conglomerate. 
or rounded, shallow cavities of an eroded surface of Bunter, and as 
the Keuper reposes somewhat obliquely on the Bunter, tkere is an 
unmistakable unconformity. The conglomerate is thickest at its 
outcrop, and as it passes beneatk the Keuper seems to lose sorae 
of its compactness, and, in one spot I liave seen, is represented by 
pebbles stuck in a deep-red marly sand. Its usual development, 
however, is in the form of a ferruginous compact crystalline band, 
thickly studded with pebbles, and so kard tkat it is dreaded even 
by navvies ; it varies in tkickness between six inokes and two feet, 
and is sometimes swollen by lenticular beds of coarse bleacked 
sandstone as muck as tkree feet thick. The most interesting ex- 
posure of it about Nottingham existed, until lately, on the Hunger 
Hill Road, and its ckaracter at this spot may be taken as fairly 
typical of its füllest development. The conglomerate itself consisted 
of pebbles, ckiefly of quartz and quartz-rock, with fragments of 
trap, volcanic ash, claystone, greenstone, slate, ckert, bits of yel- 
lowisk limestone, permian magnesian limestone, and otker rocks, 
with a good deal of calcareous matter coating some of the pebbles, 
in a ground-up form, and in minute crystals. Among the pebbles I 
found what seems to have once formet! the extremity of a sea-worn 
pinnacle (for it was ribbed or fluted korizontally) of fine-grained 
greenish Cambrian (?) sandstone. Resting on the conglomerate was 
a thin bed of grit cemented into cakes by calcareous matter, then 
about two feet of bluish-grey soft bleached sand, irregularly bedded, 
but having a general slope at about 5°, and passing under the 
Keuper. False-bedding was shown here and there, with partiDgs 
of strings of pebbles. In nothing but the absence of sea- Shells did 
these beds differ frorn recent raised beaches met with on sandy 
coasts at the present day. The pebbles are all similar to those 
found in the Upper Bunter, while the sandstone is evidently re- 
deposited Bunter ; so this conglomerate may possiblv throw some 
light on what happened in England during the interval between the 
Lower Keuper, with the Conglomerate, resting on Bunter — Turner Street, 
Nottingham. 
(Keduced from a pen and ink sketch hy the author.) 
Bunter and the Keuper subdivisions. The manner in which this 
conglomerate rests on the Bunter is v r ell shown in the above sketch 
taken from a section in Turner Street, Nottingham. 
Ihe conglomerate is surmounted by thin and thick bedded red 
