50 



PROCEEDINGS OF THE COTTESWOLD CLUB 



The Rocks more immediately concerned in my paper 

 occupy the high eastern and broadly speaking long sloping 

 ground of the western Cotteswolds. They range from 

 the steep escarpment of Broadway and Snow Hill to 

 Charlton Abbots, Dowdeswell, Leckhampton Hill, and 

 Birdlip, &c., on the west ; and Moreton-in-the-Marsh, 

 Little Compton, Chipping Norton, and up to the heights 

 of the source of the Cherwell on the N. From this large 

 tract of country between the western, N.W. and N.E. 

 portion of the Watershed and Oxford is derived daily over 

 100,000,000 gallons of spring water supplying the Thames. 

 The entire volume of the river that helps on its way to 

 supply London passes over Bensington Weir, south of 

 Dorchester and the Thame. 



The series of stratified rocks represented or occurring 

 over the western and north-western Cotteswolds comprise 

 the following 13 divisions : 



[The Lower Lias 

 Middle Lias 



Lias - - - 



Lower OoHte 



Middle Oolite -| 

 Upper Oolite -i 



Upper Lias Sands 

 Upper Lias Clavs 

 Inferior Oolite 

 Fuller's Earth 

 Great Oolite 

 Forest Marble 

 Cornbrash 

 Oxford Clay 

 Corallian Beds 

 Kimmeridge Clay 

 Portland Beds 



All these range in the order of their succession from the 

 north-western and northern portion of the Watershed to 

 the Oxford area on the south-east, and with a gradient or 

 dip so gentle that the rise from Oxford to the Thames and 

 Severn divide is scarcely perceptible. 



