116 
TRIASSIC DEPOSITS AT EMBOROUGH. 
Keuper, 
about 
31 ft. 
Yellowish clay used as fuller's earth ft. in. 
{— Tea-green marls), with " Ball 
Bands" at top and bottom . . . 10 0 
E,ed marl about 3 0 
b. Calcareous sandstone . . 18 0 
2. Dolomitic conglomerate . . ,, 12 0 
c. 
Total „ 58 1 
IV. Concluding Remarks. 
This little irregular series of Triassic beds shows a number 
of points of interest. In the first place, the Rhsetic series is 
very thin, only some 15 feet 1 inch being seen. At Aust the 
Rhaetics are B4 feet thick, and at Penarth 42 feet. This 
small development, taken in conjunction with the irregular 
and patchy occurrence of the Keuper beds, may not improb- 
ably be due to the fact that the area in which they occur was 
at the time of their deposition in close proximity to the land 
surface of the Mendip Isle, which was not wholly submerged 
beneath the waters of the Mesozoic Sea until later Triassic 
times. 
The occurrence of two well-marked Bone Beds and of a third 
layer (band e), which from the fact that it contains fish 
scales and teeth might be regarded as a Bone Bed, is note- 
worthy, as is the absence of the Gotham marble band. 
As regards the Keuper series, its most marked feature is 
its pockety character, and great variability within a small 
area. 
Another interesting feature is the variety of materials of 
economic value which the deposits yield. These include : — 
a. Fuller's earth, both pale (9, 10) and dark (12). 
b. Clay for brick and pottery making (5, 11, 13). 
c. Red and yellow ochre (3, 5, 6). 
cL Road metal (1, 3). 
An analysis of the fuller's earth, from the Tea-green Marls 
