Essex Well-Sections. 159
Thickness. Depth.
[Gault.] Chalk [? whitish calcareous clay]
41/2 feet. [Specimens of Gault clay from
950 feet down. At the bottom some
pieces of phosphatic nodules, such as about
occur at the base of the Gault] ............ 172 ? ... 1100
An account from Mr. T. Tilley, who bored the lowest part
of the well, is as follows :—
This boring, one of the deepest in the London Basin, is
the second in Essex that, after passing through the Tertiary
beds, has pierced the Chalk, the Upper Greensand, and the
Gault, the other being at Harwich. See 'The Geology of
the Eastern end of Essex (Walton Naze and Harwich).'
Maldon.— Warren's Foundry, near the Railway Station.
Information from Mr. Hatley (to Mr. Dalton).
Gravel ........................ 21
London Clay ............... 130
To sand............ 151
Maldon (Heybridge).—Bentall's Nut and Bolt Factory.
1872.
Information got by Mr. W. H. Dalton from Mr. Barham,
well-sinker, and from specimens.
Shaft, 75 feet; the rest bored.
Maiden spring 90 feet down.