192 CAEBONIFEROUS VOLCANIC ROCKS OF SOMERSET ' 
are basalts or dolerites, some with, some without olivine ; 
in one case (Spring Cove) much of the basalt is variolitic. 
The tuffs are also entirely basaltic in character, and are 
frequently highly calcareous. They often contain oolitic 
grains. The igneous rocks are described in some detail, 
and illustrated by means of a plate in the Quart. Journ. 
of. the Geol. Soc., vol. lx. p. 151-155, Plate XVII. 
II. DESCRIPTION OF THE EXPOSURES. 
(1) Middle Hope {Woodspring). 
The most complete and interesting of these sections are 
those of Middle Hope or Woodspring. The pedestrian 
coming from Weston-super-Mare will reach them most 
conveniently by following the road round by the old pier to 
the northern slope of Worle Hill, and then striking along the 
shore of Sand Bay to the targets at its northern end. By 
crossing the hill and bearing to the left the westerly exposure 
is reached. If it be desired to cycle or drive, the road 
through the village of Worle, skirting the eastern end of 
Worle Hill to Woodspring Priory, is the most convenient . 
First Exposure. — The principal and most westerly section 
is described by Sir A. Geikie and Mr. Strahan as follows : — 
“ Two miles to the north of Weston another parallel 
ridge of limestone, known as the Middle Hope, runs out into 
the Bristol Channel and displays along its northern coast- 
line a still more interesting intercalation of contemporaneous 
volcanic material. Three separate sections have been laid 
open by the sea within the space of a mile. The most 
westerly of these is illustrated in the accompanying figure, 
wh ich represents the whole volcanic group, about 100 feet 
thic k, intercalated between the ordinary crinoidal lime- 
