432 GEOLOGY OF THE SOUTH EAST OF DORSETSHIRE. 



Art. II. — Illustrations of the Geology of the South East of Dorset- 

 shire. By The Rev. W. B. Clarke, A.M., F.G.S. 



{Continued from page 401). 



Having taken up thus much space with the pebbles contain- 

 ed in the conglomerate, I now proceed with an examination 

 of the western side of Studland Bay, and shall follow the 

 course of the shore northwards. 



From the end of the chalk the cliff continues a little far- 

 ther to the west, but in a recess or nook more backward than 

 the general direction of the chalk, where the beds composing 

 it are nearly altogether hidden by an accumulation of fallen 

 masses, and a profusion of vegetation, which, however, is de- 

 cidedly such as to mark a chalky substratum. Indeed, chalk- 

 plants are there in great abundance and perfection ; so that 

 we may conclude that the surface of the chalk is not much 

 obscured by other soils. At 22 paces, however, from the 

 chalk, there is a mottled clay under the cliffs — and at 82 pa- 

 ces beyond, the east and west line terminates. 



The following measurement will give the character of the 

 cliff from the nook where the junction of the plastic clay beds 

 and the chalk cliffs takes place. 



Station No. 1, 73 paces, path up the cliff, (white sand), 

 boat-house. (White sand), 

 yellow sand at bottom of cliff, 

 road. 



crack through the cliff from W. to E. 

 gate. 



yellow clay begins, 

 end of clay, 

 blue clay. 



end of clay. (Cave in the sand above), 

 red sand. 

 Red Rock end. 



In the above enumeration, where no mention is made, the 

 intermediate substance is sand of various degrees of hardness, 

 and changing from white and yellow to red and brown. 



The clays also and sands all rise from under each other, 

 being stratified at an angle of about 24°, dipping to the north. 

 At station 4 there is a layer of chalk, embedded in earth and 

 sand, apparently a natural deposit, immediately over the- sea 

 beach (which consists of chalk-flints and masses of ferrugin- 

 ous sand rock), but I am unable to account for it, as it does 

 not look like an accidental or a designed accumulation of arti- 

 ficial materials, but like a natural one. 



