1856..
WRIGHT UPPER LIAS SANDS.
295
Section I. — Leckhampton Hill, near Cheltenham.
Nos. 1 and 2 form the upper ragstones, consisting of the *' Tri-
gonia-grit" (No. 1), and the " Gryphaea-grit " (No. 2).
No. 1. The Trigonia-bed is a coarse brown ragstone, containing
many impressions of Trigonia costata. Sow., T. decorata^ Lye,
liima cardiiformisy Sow., Rhynchonella concinna. Sow., Ammonites
Fig. 1. — Section through Leckhampton Hill, near Cheltenham.
Leckhampton HilL
1.5
A, B, C.
D.
E, F, 6.
1. Trigonia-bed.
2. Gryphaea-bed.
3. Brown rubbly oolite.
4. Flaggy freestone.
5. Fimbria-bed or oolite-marl.
6. Freestone.
A, B, c. Pea-grit and ferruginous oolite.
D. Cephalopoda-bed.
E, F, G. Upper Lias sand and Upper Lias clay.
H. Marlstone.
I. Lower Lias clay.
Parkinsoni, Sow., Uchinobrissus clunicularis, Lhywdd, Holectypus
depressus, Leske, and Clypeus sinuatus^ Leske; in thickness it is
about 7 feet.
No. 2. The Gryphcea-hed is an ancient oyster-bank, and is com-
posed in great part of Qryphcea Buckmani, Lye, with many other
shells, as Myacites dilatata. Buck., Terebratula impressa, v. Buch,
Tancredia donaciformis, Lye, Gervillia tortuosa, Phil., Lutraria
ovalis ?, Phil., Cypricardia cordiformis, Desh., Ammonites Mur-
chisonce, Sow., and many other shells ; but the dominant shell is the
Gryphcea : this bed is about 8 feet in thickness.
No. 3. A coarse, brown, shelly, rubbly oolite, well exposed to the
east of Leckhampton Hill, where it forms a mural cliff; and between
the inclined planes at the Leckhampton quarries it contains many
fossils ; but, as the bed is not in general quarried, they cannot be
extracted : it is about 24 feet thick.
No. 4. Upper flaggy bastard-freestone, well seen above the oohte-
marl : 26 feet thick.
No. 5. The Oolite-marl or Fimbria-bed, is a cream-coloured mud-
stone, not unlike chalk-marl ; the dominant shell is Terebratula fim-