FOREST MARBLE : BRIDPORT. 
343 
reddish-brown, and containing many fossils. It forms a dark 
band in the cliff, at the base of the Forest Marble, and is the 
Rhynchonella-\)Q& previously noticed near Langton Herring. It 
is again found in the cliffs above the Fuller's Earth at Cliff End 
east of Burton Bradstock. 
At West Cliff the Forest Marble is about 80 feet in thickness. 
No traces of Cornbrash are now observable, although a small 
outlier was indicated on the Geological Survey Map (see p. 437) : 
but its former presence denotes that the total thickness of the 
Forest Marble does not exceed 90 feet, and this accords with 
measurements made at Bothenhampton. 
FIG. 99. 
Section at West Cliff, near Eype, Bridport. 
The divisions of the Forest Marble on the Dorsetshire coast are 
as follows (see Fig. 99) : 
Cornbrash. 
Forest Marble - 
Fullonian 
(Fuller's Earth). 
10. Flaggy blue limestone, showing 
ripple-marks, and clay or shales, 
with, "race " : the limestone, pre- 
ponderating ... 
9. Clays with "race," shaly lime- 
stone, thin shelly limestone and 
thin leaves of sandy limestone, 
ferruginous in places : the clay 
preponderating ... 
8. False-bedded shell - limestones, 
sandy and oolitic in places, with 
irregular clay-seams, many 
ochreous galls, lignite : and with 
Pecten, Ostrea, and fragments of 
Apiocrinus - - 10 to 
7. Grey clay (not persistent) - 
6. Hard white or grey marl, with thin 
seams of bluish shelly limestone - 
5. Blue flaggy limestone-shales, and 
blue and yellow clays, with thin 
layers of calcareous grit covered 
with curious markings 
4. Hard sandy marl stained reddish- 
brown : RJiynchonella-bed, with 
Pecten vagans, Terebratula maxil- 
lata, Rhynchonella varians, R. 
Boueti, Serpula, &c. 
3. Bluish-yellow marl, with imper- 
sistent band- of hard fissile white 
marl .... 
j 2. Hard fissile white marl 
[_ I. Grey marls, seen to thickness of - 
FT. IN. 
10 
20 
15 
3 
6 
30 
9 
2 
80 
