SECTION IN SINKING FOR A WELL 



NEAB 



LTDNEY BASIN, 



SHOWING STEATA PASSED THKOUGH, 

 By GEORGE KEELING, 



(OF THE SEVEBN AND WYE EAILWAT,) ENGINEEE. 



PRESENT SURFACE 

 SOIL 



BLUE CLAY 3 



SAND . 

 GRAVEL & SAND 



GRAVEL, &c. g 

 ORIGINAL SURFACE 



SANDSTONE S 



RED MARL e 



SANDSTONE | 



RED MARL ". 



PRESENT SURFACE 



^' 



^ ??* 



^ ^ ^ 



J ^' ' 



A stiff good Clay with 



small shells scattered in it. 



Impermable. 



An "Organic 'Deposit** con- 

 sK insof Moss and Reeds. 

 ^til! in a grpcn statn. pieces 

 if Wood, Bones of Animals, 

 Burns freely, contains 

 Lich gas. Impermable. 



&-C 



A fine white Sand. 



Very permable, and holds 

 ,1 large (fuantity of water, 

 but of a bad quality. 



Grey and lied Sandstone— 

 Pfbbles cemented together 

 with fine sand, and qnite 

 impermable. It aI«o con- 

 tains large Pebbles of "'Iron 

 Ore" of excellent (luality. 



ORIGINAL SURFACE 



on the top of the 

 Sandstone. It is perraahle 

 and contains a large quan- 

 tity of water of apparently 

 good quality. 



Scale: one-eighth of an inch to one foot. 



