TRUNKS IIH QTJATEENAEY SANDS AT EEADING. 



303 



Quaternary. 



Tertiary 

 (Lower Eocene). 



Secondary, 



IM 



o.i 



Alluvium and concealed gravel 



Gravel exposed 



r Beconstructed clays 



\ Beconstructed sands 



/ 1. Laminated clays (blue, yellow and 



grey, with plant-remains) 



2. Sand and thin clay 



I 3. Laminated clays (bluer than 1, but 



with plant-remains as there) 



Yellow sand (with an indurated ferru- 

 ginous layer below, 1-2 in.) 



Homogeneous blue clay (non-laminate, 

 with concretions of iron-pyrites and 



a little vegetable matter) 



Green-coated pebbles, and sand (no 



fossils) , 



Chalk. 



ft. 



in. 



6 



8 



10 







absent. 



8 



3 



1 



1 





2 



2 2 



Total 29 Hi 



Fig. 2. — Probable Section of Junction between Tertiary Beds and 

 Quaternary reconstructed Beds. 



'^^m 



jAT-^^^^^ 



FhTU: LrraveJs 



r^n^^-tic^K^^,^^^ 



^Math&dY^kfj^) 



V^v", 





a. Eeconstructed beds. h. Woolwich and Reading beds. 



c. Unaltered Tertiary. 



• The group of beds A and B correspond in this east face to the 

 gravels and recent strata, together with the reconstructed quater- 

 nary series of fig. 1 (A and B). Beneath this the beds numbered 

 1 to 5 (C) were met with. At the point where these were first 

 reached all evidences of reconstruction ceased ; there was no inter- 

 mixture with river-gravels, no imbedded Post-tertiary remains, no 

 disturbance. The laminated clays 1 and 3 obviously represent 

 the " Leaf-beds " discovered by Prof. Prestwich in the cutting of 

 the G. W. E. line to Newbury and Basingstoke. There are none of 

 the delicate impressions, however, shown in the latter beds in that 

 locality or at Katesgrove. The position of the beds C, just orer the 

 green-coated pebbles, D, is also indicative of their correspondence 

 with the Leaf-beds. 



