GEOLOGY 



I. Dover Colliery, Shakspere Cliff ' 



Formation Thicknei 



/ Grey Chalk and Chalk Marl 



tCault 



i Lower Greensand 

 Weald Clay 

 Hastings Beds 



(Kimeridge Clay 

 Corallian Beds (including 12 feet of oolitic 

 iron-ore)* 

 Oxford Clay 



Great Oolite Series 



Lias 



Coal Measures, with eight workable coal seams 

 having an aggregate thickness of 1 6 ft. of coal 

 Total depth of boring . . . 

 IL Brabourne Boring, 5 miles east of Ashford ^ 



System Formation Thickni 



Upper Cretaceous . Gault 



Lower Greensand and Atherfield Clay. . . 



Weald Clay 



Hastings Beds 



Portland Oolite 



Kimeridge Clay 



Corallian Beds 



». Oxford Clay 



Great Oolite Series 



r Middle Lias 



\ Lower Lias 



Triassic Conglomerates 



Palaeozoic Rock, exact age unknown * . . . 



Total . . . 



in. RoPERsoLE Boring, 8 miles north-west of Dover 



System 



Upper Cretaceous 



Lower Cretaceous 



Upper Jurassic . 



Middle Jurassic 

 Lower Jurassic . 



Upper Carboniferous 



Lower Cretaceous 



Upper Jurassic . 



Middle Jurassic . 



Lower Jurassic . 



Trias . . . 

 Palaeozoic . . 



System 



Upper Cretaceous . 



Lower Cretaceous . 



Upper Jurassic . 



Middle Jurassic . 

 Lower Jurassic . 

 Upper Carboniferous 



Formation Thi 



Upper Chalk 



Middle Chalk 



Lower Grey Chalk 



Glauconitic Marl 



Gault 



I Lower Greensand 



i Atherfield Clay 



( Purbeck-Wealden Beds 



I Kimeridge Clay (?) 



I Corallian Beds 



[ Oxfordian and Callovian Beds . . . . 



Bathonian Beds (Great Oolite Series) . . 



JUpperLias(?) 



t Middle Lias 



Coal Measures, with two thin coal seams. 

 Total . . 



I in feet 

 182 



613 



2,314 



;ss: ft. in. 



72 6 



231 



198 



206 6 

 14 



242 



305 



243 



189 I 

 74 8 

 98 I 

 48 4 

 88 5 

 2,010 7 



ii» 

 220 



16 

 119 



51 



21 



55 



10 



157 

 142 

 164 

 3 

 24 9 

 192 10 



,773 7 



> From summary published by R. Etheridge in Report Bntish Assoc, for 1899, p. 733. See also, 

 for full details of section, Prof. Boyd Dawkins in paper above cited ; and F. Brady, G. P. Simpson, and 

 N. R. Griffith, Tram. Fed. Inst, of Mining Engineers (1895-6), xi. 540. 



2 W. B. Dawkins, Rep. British Assoc. Oxford (1894), p. 648. 



» From record published by R. Etheridge in Report British Assoc, for 1899, p. 733. 



* In Prof. Boyd Dawkins' opinion ' probably Devonian,' and therefore older than Carboniferous. 

 See ibid. p. 736. 



6 From record published by Prof Boyd Dawkins, ibid. p. 735. The boring was not then 

 completed, but no further details have been published (July 1902). 



27 



