66 LIAS OF ENGLAND AND WALES : 
FT. IN. 
Dark shales and paper-shales, slightly"] 
calcareous and micaceous, with indu- I ^c n 
rated bands and seams of " beef." [ 
[Saurian remains] - - -J 
Marly cement-stone bed. "1 
Marly shales with iron-pyrites, and thin I gc . ~ 
conspicuous layer in the West Cliff C 
known as the BLACK BEAR - -J 
Hard Marl or Table Ledge. 
3. Belemnite Beds. This division, as before mentioned, 
occupies the higher portions of the clay-cliffs at Black Ven, 
forming the third terrace. It appears as a well-marked light- 
grey baud here, and again in Stonebarrow, where the easterly dip 
brings it nearer and nearer to the sea-level (see Fig. 41, p. 53). 
It disappears, however, abruptly, west of St. Gabriel's Water, 
Golden Cap, owing to a fault with a downthrow of about 40 feet 
on the east. 
The mass of the beds is by no means rich in fossils, for although 
Belemnites Millcri and B. compressus may be found dispersed 
through the lower and central portions of the marls, few other 
fossils are to be seen. Now and again an Ammonite, poorly 
preserved, may be obtained, but I succeeded only in finding . 
specimens of A. raricostatus and A. scmicostatus, which thus 
range above the regions assigned as the ! r appropriate zone?. 
Lenticular masses of lignite, approaching jet in character, 
occur in places ; and I noticed one mass at a depth of 3 feet 6 inches 
below the Belemnite Stone under Golden Cap. The central 
portion of this division is formed by a band of harder pale grey 
marls, thicker and more conspicuous in some places than in 
others. 
To the upper portion of this series most interest attaches, for 
there occurs a band of dark shaly marls rich in fossils, covered by 
a thin layer of pale marly limestone, known as the "Belemnite 
Stone," and also very fossil iferous. 
Black Ven is not the most convenient place to examine these 
beds, for the platform at their foot is exceedingly wet and boggy, 
springe being thrown out at the junction with the denser clays 
and shales below. Good sections are exposed in some of the 
gullies in Stonebarrow Cliff and particularly to the east of 
Breakneck Gully, and here their fossil treasures may most readily 
be obtained.* 
The finest exposures of the beds however are on the foreshore 
below Golden Cap, for the strata (which were thrown down by 
a fault a little further west), re-appear owing to a gentle anticlinal 
at the base of Golden Cap, and are usually well-exposed rather 
to the east of the loftiest portion of the cliffs, where again there 
is evidence of slight faulting. The foreshore along which the 
beds are shown at low tide, is rather to the west of this exposure, 
and there a grand exhibition of Belemnites and other fossils is to 
* In his section, Trans. Geol. Soc. ser. 2. vol. i. Plate viii., De la Beche marked 
Stonebarrow Cliff as " Shorne Cliff," but the latter is the name applied to the 
western slope of Golden Cap. See also Report on the Geology of Cornwall, Sec. 
p. 227. 
