WELL SECTIONS IN THE NEIGHBOURHOOD. 



6i 



WELL SECTIONS IN THE NEIGHBOURHOOD OF HAMP- 



STEAD.' 



The following measured sections obtained by well-sinking will 

 show the ascertained thickness of the beds below eight points in 

 the neighbourhood of Hampstead. By far the most important is 

 the Kentish Town section, obtained by a boring for water for the 

 New River Company, which gives the thickness of the beds to a 

 depth of 1,302 feet. A summary of the details of this section, 

 taken from Professor Prestwich's paper in the Quarterly Journal 

 of the Geological Society, vol. xii., gives the following measure- 

 ments as arranged by Mr. Whitaker : — 



Kentish Town Well. 



Surface of the ground 174 feet above Thames High Water Mark. 

 Shaft 539 feet, the rest bored. 



London Clay .... 

 Woolwich and Reading Beds 

 Thanet Sands .... 

 Chalk with Flints (Upper Chalk) . 

 Chalk without Flints (Lower Chalk) 

 Chalk Marl .... 



Upper Greensand . . - . 



Gault 



Sands, Sandstone, Clayey Sands, Clays, and Conglo- 

 merates of doubtful age, prevailing colour red . 

 Lower Greensand (?) 



Total 



188 6 



1,302 o 



From the " Geology of the London Basin," by William Whitaker, B.A., F.G.S. 



