IN THE ANGLO-PARIS BASIN 



59 



Li th o logy 



Light grey weathered clay with limonttic concretion* otter pyritic ?fossils.j 



Weathered grey clay. 



Pyritic dork grey clay weathering ferruginous. 



Weathered blocky silty micaceous dark grey clay with bleached areas ot 

 parting planes. 



(v) Blocky massive grey cloyey silt, weather ing white. The top 12inches 

 contains more cloy. 



(iv) Dork grey silty clay with filaments. 



(iil)Grey clayey silt with pyritic filaments; passing at the base into 6(ii). 



(ii) Sparsely shelly glauconitic grey clay with pyritic filaments. 



(i) Very silty micaceous cloy with pyrite a nd l enses of sittstone. 



Poorly bedded massive micaceous silty clay, rather more silty.in the lower 

 1 foot 5tnches, with many pyritic filaments, a shell seam occurs 3 feet 

 from the base and contains brown phosphatic concretions. The clay ( darkish 

 grey in colour, contains scattered shells with a tew large crushed ammon- 

 ites in the sediments above the 3 feet level. 



Brownish fawn silty clay, extensively burrowed, with infill i ngs of dark i 



grey clay. w 

 



(iii) Tough silty glauconitic dark grey clay with a few scattered shells. 



(it) Port-phosphotised ammonites & cementstone nodule s in burrowed cloy. 

 (i) Passage bed between lithology of Beds 4 and 5 (iii). 



Fawn silty clay with glauconite-sa nd infilled burrows. 



Finely silty micaceous clay, coppery brown in colour when wet and fresh, 

 with patches of dark grey clay. Both are cut by fawn coloured burrow 

 infillings in top 8 inches. Pyritic filaments occur throughout; shelly 

 especially in the upper part. 



Prominent ond persistant seam of sandy ferruginous marlstone- 



Medium grey clay with some phosphatic nodules. 



Ft Ins M. 



' * ' z z z 



10 »- 

 8 



Fig. 26. Section in Gault at Messrs Hills of Swindon Ltd's Caen Hill brickyard, c. 180 

 yds ENE. of the Olive Branch Inn, in the W. side of Caen Hill, Rowde, Wiltshire (ST 

 98246135). 



