3-1 ME. G. ^. LAMPLrGH 0>' THE JU>'CTIO>' OF ^vol. IxXYlii, 



Thicl-ness in feet. 



Z. Dark clayey soil with flints, etc., passing down into — 1 to 2 



ZY. Weathered and rearranged palish-gi'ey Ganlt clay, mostly 7 i t ^ 

 4 ' creep.' with crumbly structure : penetrated by roots. 3 



4. I Dark Gault, somewhat disturbed, with rusty weathering;"^ 

 •4 a. 5 detinite bedding in the lower part : small grit-srains and [ 



pale-coated phosphatic nodules mostly of tubular shape, Y about 2 

 both becoming larger and more abundant downwards : 

 passing down into — 

 3 b. Dirty, rather rusty, gritty loam streaked with very gritty dark'' 

 clay in the upper part : small pebbles, up to 1 inch in 

 diameter : gritty phosphatic nodules of irregular shapes 

 (pale-coated, dark inside) occur all thi'ough ; also an occa- f> about 1^ 

 sional worn fragment of iron-grit, and some streaks of 

 crimson and liver-coloured concrerionary iron-pan up to | 

 ^ inch thick. The gritty nodules are sparingly fossil iferous. J 

 rib Discontinuous baud of large calcareous concretions, sandy^ 

 or outside, but often having a dense phosphatic core, usually | 

 3a. pale buff or pinkish, but occasionally nearly black : invested Y a^ to 1 

 by a few inches of rusty (r rewashedj sand, lying across, j 

 and cutting iiTegular hollows in, the cross-bedded Sands. J 

 1. Coarse sharp Leighton Sands with cross-bedded structure, etc. 



as described above (p. 32) seen about 20. 



At the north-eastern end o£ the section figured the worldng- 

 face bends at right angles, and continues north-westwards for over 

 100 Yards, sho^ving the same capping beds, but more weathered, 

 and diminished in the upper part by the slope of the ground. 



Groveburv Brickyard. — In the next field on the west, 

 within a few yards of the south-western end of the last section, 

 and divided fi'om it only by a fence, a small brickyard has been 

 worked intermittently in the Gault clay dui'ing the last 20 years, 

 and has yielded some useful information as to the upward succession. 

 Work has been resumed here recently lautumn of 1920), but the 

 -sections are at present poor. They were better, however, in 1909 

 and 1912, and the following particulars are based mainly on my 

 notes of those years, and on small collections made then and 

 subsequently. 



Sections in Grovebury Brickyard; April 1912 & Sep t ember 1920. 



Surface, 300 to 305 feet CD. 



Thickness in feet. 

 C. In a shallow pit between the sheds and the 



eastern fence: 1920: — 

 Pale weathered greyish crumbly Gault clay up to -4 



on darker blue platy clay, with small smooth brown-coated 



phosphatic nodules ; seen in trenches only. 

 ' Ammonites rostratus ' and " Inoceramus salcatus ' obtained on 



a clay-heap from this digging. 



B. In a pit, now water filled, south of C: 1912: — 



Band of palish b!ue clay containing small brown-black phos-^ 



phatic nodules with fossils : 'Ammonites auritus," 'splendens/ | 



etc. I see list, p. 52). )- seen about 3 



Dark-blue platy clay with crushed and indeterminable fossils j 



only. J 



A. In a sump in a deeper dry pit north of C, 

 close to the eastern fence; 1912: — 



Gault clay, slipped and ob>cure (includinir part of B) about 10 



Gritty clay, w^th giitty phosphatic nodules ") (same as in the 



Sand, with big sandy nodules in a band at the top ) Sandpit, fig. 17). 



