VOL. XV. (1) RHATIC ROCKS 23 
I.—SECTION NEAR CROOME D’ABITOT. 
15 SANDSTONE. (Bone-bed-equivalent) ; fissile, 
o's yellowish-white (weathering brown), Schisodus 
eR (casts), M@odiola minima, annelid-tracks and 
de other markings ... : (visible) 1 1 
16 SHALES, black, ‘imperfectly laminated, pe 2 2 10 
Yellowish clayey deposit... a a I 
«I. ‘Tea-green Marls.” Pale, greenish-grey marls 
3 2/ with a hard band of white marlstone near the 
52 | top: the hard zone 7 inches thick 
Ui. Red Mele: visible in fields below.. 
sour 4oo yards east-by-south of the above exposure is 
an excellent section of beds of pre-planorbis date, and 
Mr H. B. Woodward, F.R.S., relegated the basement-beds 
that he saw here to the Rheetic Series." 
In the railway-cutting at the locality marked Abbot's 
Wood on the Geological Survey Map, Strickland noticed 
that “the beds of fissile sandstone at the base of the Lias 
are again exposed on the railway, being brought up by 
a fault.” * 
The railway-cutting on the Midland Direct Line to 
Birmingham at Norton breaches the escarpment, but the 
section once exposed is now overgrown. The “ Tea-green 
Marls,” however, are visible. The section presented was 
“exactly analagous to that at Dunhampstead, showing the 
same succession of lias limestone, clay, white thin-bedded 
sandstone, grey marl and red marl. The sandstone also 
contains the oval bivalve met with at Dunhampstead.” ° 
In the farm-yard at Muckenhill a Rhetic sandstone 
(bed 17) is exposed, and in the field-track to the east the 
“ Tea-green” and Red Marls of the Keuper are visible. 
The “ Tea-green Marls” are again well exposed half-a-mile 
north-north-west of Wolverton. From Churchill Wood to 
Dunhampstead the escarpment is most marked. West of 
r Mem. Geol. Sury., “ Jurassic Rocks of Britain,” Vol. iii, (1893), “ The Lias,” p. 147. 
2 Memoirs, p. 138; Proc. Geol. Soc., Vol. iii. (1843), p. 315. 3 Memoirs, p. 138. 
