Vol. 6 3 .] 



OF THE RISSINGTOX-BCTvFOKD DISTRICT. 



441 



Great Oolite. 



Fullers' 

 Earth. 



Section in the second Quarry at Great Rissington. 



Thickness in feet 

 /Limestones, brownish, black-speckled. 

 L Limestones, rotten-looking, shelly. 

 Clay, greenish-grey, with a band of lime- 

 stone full of Ostrea acuminata, Sow. 



(3 to 6 inches) l 1 



fa. Limestone, ' Globata-Bed ' ; Terebratula 



glohata, auctt., and Clypeus Ploti 



Rubbly Beds. -\ b. Limestones, rubbly ; Clypeus Ploti, Klein, 

 Terebratula globata, auctt., and Phola- 

 domya Murchisoni 8 



■ ■«*• • x? j > f Limestones, more massively bedded; Ch/peus 

 Massive Joeds. < D7 .. m ■, , 7 , 7 i .<_ J in 



[ Ploti, lerebratula globata, auctt.: seen... 12 



Upper Lias. Claw 



iches 



The finest sections of the Clypeus-Qrit are on the hill east of 

 Little Bissington, where, on the north side of the road, two quarries 

 afford much the same section. 



Little-Rissington Quarries. 



Thickness in feet inches. 

 Rubbly Beds. b. Limestones, rubbly ; Clypeus Ploti, Klein, 

 Terebratala globata, auctt., Berenicea sp. 

 (on ' T. globata '), Pholadomya Murchisoni 

 (Sower by), Pleuromya Golclfussi (Lycett), 

 Pecten ( Campion ectes) arcuatus, Sowerby ; 

 passing down into 



' Massive Beds.' Limestones, more massive : seen 6 



Rubble 5 



Limestone, coarse, oolitic ; occasional specimens 

 of Terebratula globata, auctt., and Pecten 



( Syncyclonema) demissus, Phillips „ 2 



Limestone-rubble ; Clypeus Ploti very common : 



4 to 8 inches 6 



Limestone, massive, oolitic 2 8 



Rubble; Clypeus Ploti 3 



Limestone, massive, oolitic : seen 1 10 



The Clypeus-Grit is also exposed in quarries, near Wyck Beacon ; 

 at the cross-roads five-sixths of a mile slightly north of east of 

 Little-Eissington Church ; at the turning to Gawcombe Earm ; by 

 the side of the track over Westcott Common ; at Par-Hill Barn : 

 and, in the southern part of the district, in a quarry a little over 

 half a mile north-west of Taynton. 



The disused quarry at Far-Hill Barn is situated at the north- 

 western corner of a very small field, at the south-eastern corner of 

 which a spring hursts forth, coming off the Upper Liassic clays. The 

 change in the nature of the ground, with which is correlated a 

 change in the flora, is hoth marked and instructive. The spring at 

 the head of the combe, a mile and five-eighths east by north of 

 Great-Eissington Church, flows off the Upper Liassic clays ; and 



1 Mr. Charles Upton washed some of this clay, and found in it three speci- 

 mens of Cnstellaria rotulata, Lamarck. 



2 About 8 feet, may be more. 



