98 



rUOF. MOEEIS — GEOLOGY OF THE LONDOU" BASIN 



Fig. 3. — General Section of the Tertiary Beds at Hatfield 

 Park Kiln.'^ 



d 1 

 d 2 

 d 3 



d 4 

 d 5 

 d 6 



U^:^ 



about 7 



(Scale, 8 feet to an inch.) 



'I Gravel, composed of various sized peb- 

 ; bles of fiint, Avhite and pink quartz, 



quartz-rock, and some other rocks, 

 and subangular flints, in coarse 

 whitish sand, in parts as much as . . 



/ («) StifE brown clay, more sandy 



towards the base ' 



/ {d 1) Brown loam, with \ 



green grains 



{d 2) Thin bed of broAvn ! 



clay i 



{d 3) Olive-green and dull I 



brown sand j 



o I '» (^'*) Dull brown sand, with 1 

 green grains and perished 



shells \ 



[d 5) Brown loam, with / 

 small nodules of stone 

 pq and perished shells . . . 



{d 6) Finely bedded alter- 

 nations of olive-green 

 and dull brown sand, with 



perished shells 



(f) Thin bed of flint- 

 pebbles, mostly small . . 



(ff) "White and light-coloured sand 

 with layers of grey laminated 

 clay ; at parts some veiy small 

 pieces of ironstone, and here 

 and there a flint-pebble ; for the 

 most part regularly bedded, but 

 a little false bedding in the 

 lower part about 23 



(/) Bottom-bed. Flint-pebbles and 

 subangular flints, very dark 

 green (almost black) outside, in 

 sand ; the upper part ironshot, 

 the middle grey and greenish- 

 yellow, the base ironshot ; 

 srreatest thickness about 2 



{m) Chalk-with-flints. 

 with a dip about S.E. 



Junction even, and 



* " At Hatfield Park Kiln, at the eastern edge of the park, the pits give a very 

 good section from the high-level gravel down to the Cb;ilk. On the eastern side 

 of the road, the higher pit shows the former over liOndun Clay, and the lower, 



1,(111(1(111 Cliiy and its bas(iiiint-li(d over the Reading Beds; whilst on the other 

 side the lii-iiir |)it .'ilsd >li..ws London Clay with a little gravel, and the lower 

 oin- all the licds iroin the liascnn'nt-hed to the Chalk."— Whitaker, ' Mem. Geol. 

 Sniv.' vol. iv. p. 22G, lig. o7. !See also Prestwich, 'Quart. Journ. Geol. Soc' 

 vol. vi. p. 270. 



