Inverted Mass of Uiyper Cretaceous Strata. 



59 



bed) at the base of the Upper . Gault, resting immediately upon 

 the false-bedded Lower Greensand, is situated in an opening recently 

 made just north of Sandpit Cottages (No. 10). In a neighbouring 

 abandoned working 200 yards north-west of Sandpit Cottages and 

 about 200 yards N.N.E. of Harris's Pit (No. 6), the thin sand-bed 

 with derived nodules is not present at the base of the Upper Gault ; 

 the basal bed of mixed composition rests directly on the false-bedded 

 Lower Greensand. 



In the large abandoned Garside's Pit, the section at the present 

 southern face (No. 4), at a point about 150 yards S.S.E. of Harris's 

 Pit, is as follows : — 



Upper 

 Gault 

 Clay. 



Basal bed 



of 



Upper 



Gault. 



Lower 

 Greensand. 



Soil and Drift 



Crumbled or finely brecciated grey clay, imperfectly 

 bedded, with small brown-skinned and black 

 nodules (np to 1 inch in diameter), and 

 occasional small pockets of glauconite ; Belem- 

 nites minimus found throughout, but abundant 

 near top ; small Inoceramus co7icentricus rare ; 

 no other fossils seen . . . about 



Grey and brownish clay, better laminated than 

 the above, with small white calcareous nodules 

 (up to 1 inch in diameter) ; only Belemnites 

 minimus seen ; the bottom 1-4 inches stained 



, reddish ..... about 



resting conformably upon 



Clayey yellow and greenish impure sand with 

 much brecciated material, principally fragments 

 of ironstone (up to 3 inches in diameter) ; the 

 bed has greenish sandy streaks and contains the 

 same kind of white nodules as in bed above 



Hard limonitic and partlj' vitreous iron-grit,f orming 

 a continuous band ..... 



marking unconformable junction with 



• False-bedded sands with large irregular indurated 

 masses of iron-grit towards upper part and at 

 top, sometimes confluent with the iron-grit 

 layer above ; sands stained bright orange and 



^ reddish -brown below . . seen to about 



fL. 

 1-3 



6 



8-15 



The lateral variation in the current-bedded sands of the Lower 

 ■Greensand, both in respect to induration and colour, is so rapid 

 and frequent throughout the district that there need be no hesitation 

 in correlating the ujoper part of the sands here with the corresponding 

 purer sands at the neighbouring Harris's Pit. When we come to 

 consider the overlying strata, a comparison between these two 

 sections shows that the sandy beds F and G of Mr. Lamplugh's 

 table of strata at Harris's Pit are unrepresented in the series described 

 above. The lenticles of brachiopod-limestone of bed D are also 

 missing here, just as in all the other sections already described. 

 The peculiar basal bed of the Upper Gault, with possibly an 

 occasional trace of the clay lying conformably upon it, supplies the 

 one connecting link. The 18 ft. mass of inverted rostratus Gault 

 at Harris's Pit is entirely unrepresented in the above section. 



