32 



Bod 



MIDDLE ALBIAN STRATIGRAPHY 



Li thology 



10 



Mottled brown and blue-grey clay with selenite. A seam of crushed 

 bivalves occurs at the base with poorly preserved part-phosphatised 

 ammonite;. 



Light-grey weathered clay with much selenite. 



Very dark brown clay. 



Dark blue-black blocky clay with yellowish patches mainly on 

 partings. 



Highly ferruginous yellow clay with stony lenticles of reddish marlst- 

 one containing disc-shaped pebbles of micaceous morlstone. ^* 



Dark grey clay with pyritised and partly-phosphatised ammonites 

 but usually crushed flat. 



Impersistent but wel I developed Ipnticlesof hard ferruginous ,. 

 marlstone with lateral interstitial gritty c lay-marl. / 



Hard brownish marly clay with marly seams passing down into 

 the bed below. 



Dark grey slightly mottled clay. 



Greyish-white to black phosphatic nodules, brownish when 

 weathered, mainl y ammonite casts with abraded upper surfaces 



Dark grey clay with pockets of glauconite, some oxidised. 

 Phosphatic nodules occur scattered at about the middle of the 

 bed. 



Scattered subangular phosphatic nodules I n gritty glauconiticclay > \' 



Ft Ins M 



Gritty glauconitlc clay with patches of glauconite sand. 



urn ezzz; 





c2 



1-4 



Gault-Lower Greensand junction beds 



Fig. 13. Section of Lower Gault in the Buckland Sand & Silica Co's sandpit extending 

 from a point 2100 yds WNW. of Reigate railway station to a position c. 250 yds SW. of 

 Dowdes Farm, and 50 yds S. and roughly parallel to the Dorking-Redhill railway line, 

 Buckland, Surrey (TQ 232512). 



