54 SOMK ESSEX WEl.I, SECTIONS. 



This section is of interest as showing two unexpected things : — 

 the presence of a lower bed of Boulder Clay (beneath the C.lacial 

 gravel), which does not come to the surface hereabout ; and an 

 extension of Reading and Thanet Beds northward, along the 

 valley of the Pant or Blackwater, beyond the limit to which they had 

 been guessed to reach. The brownish sand with a pinkish tint 

 reminds one of the pale pinkish bed above the green base-bed of the 

 Thanet Sand at Sudbury, and proves therefore a westerly extension 

 of that division of the Lower London Tertiaries. 



Mist ley. — For Messrs. Rodwell, Fiee e^ Co. 1891. 



Boring, made and communicated by Mr. F. Bennett. 



On a level with the quay, w^hich is about 30 yards off. 



Water-level sinks 20 inches at low tide. 



The steam-pump was throwing considerably over 6,500 gallons 

 ail hour, and although we pumped for several hours, the supply 

 seemed to be abundant. The water drops about 2 feet, and then 

 remains at a fixed level of 14 feet 4 inches from the surface. (Letter 

 from Messrs. Rodwell, November, 1891.) 



Thickness. Depth. 



Made soil 4 ... 4 



r, , „, ( Light f-colouredl mottled clav 10 ... 14 



[London Clay, ) Brown mottled clay 5 - I9 



172 teet.J ( Running sand [? basement-bed] 2\ ... 2\\ 



Mottled clay 17' ... 38J 



Running sand \\ ... 40 



Mottledloam 11.} ... 51^ 



Green mottled clay 4J ... 56 



Green sand}' loam I5 ... 5/2 



[Reading Beds, ^ Rough sand .] ... 5^ 



59 feet.] Green sandy loam i ... 59 



Running sand \\ ... 6c4 



StiT blue clay 15^ ... 76 



Brown clay i^ ... 772 



Green loam 2 ... 79^ 



V Flint-bed i ... 80^ 



Chalk. Large flint 82^ feet from surface 80 ... l6o| 



Ovington. — Public Well. By the roadside, fiear the Rectory. 1891. 

 Made and communicated by Mr. (j. Ingold. 

 Shaft 95 feet, the rest bored. 

 Water-level io2| feet down. 



Thickness. Depth. 



f Brown Boulder Clay iS ... 18 



[Glacial Drift. ]] Blue Boulder Clay 86 ... 104 



C Sharp brown sand 21 ... 125 



White chalk with flints 70 ... 195 



