VOL. XVII. (I) INFERIOR OOLITE— SOUTH COTTESWOLDS 



The Top-Beds are much more accessible in a quarry about 

 a mile away, which may be called the " Coombe-Hill Quarry." 

 It was from the Upper Coral-Bed here that a specimen of 

 Lissoceras psilodiscum (Schloenbach) was procured. The dis- 

 covery was of particular importance, in that it afforded the 

 first definite evidence for the date of the Upper Coral-Bed, 

 namely, Truellei hemera, which has now been recognised at 

 such widely-separated localities, and has proved so valuable a 

 datum-level in correlating the " Top-Beds." This quarry also 

 reveals the fact that the Clypeus-Gxit is becoming increasingly 

 fossiliferous, and the appearance of Clypeus Ploti, Klein, is 

 interesting. 



Continuing up the road in the direction of Symond's-Hall 

 Hill, the presence of the Fullers' Earth is easily discerned in the 

 hummocky nature of the ground. There is a small exposure 

 in the field to the right of the road at an altitude of about 670 

 feet, and deposits of clay and limestone-bands replete with 

 Ostrea acuminata, Sow., are visible. Still higher up the hill, 

 about 780 feet above ordnance-datum, is a quarry in the base- 

 ment-beds of the Great Oolite, the lowest of which have 

 an initial Stonesfield-Slate aspect. 



Sequence at Wotton-under-Edge. 



Symond's-Hall-Hill Quarry. 



Thickness in feet inches 



Great Oolite. i. Limestone, fissile at the base 



In the Fields on the Hill-side. 



Fullers' Earth. 



I. Rubbly Beds 3. 



II. White Oolite 



III. Clypeus-Grit 



Clay, with limestone-bands, 

 full of Ostrea acuminata, Sow. 

 Not exposed. Add say . . 3 



CooMBE-HiLL Quarry 



Limestones, flaggy : seen . . 2 

 Limestone, oolitic , but harder 

 than the beds above and be- 

 low, and containing Tere- 

 hratida globata, auctt. non 

 Sow., abundantly.. .. i 



Rubbly parting . . . . o 



Limestone, white oolitic . . 5 

 Limestone, hard, yellowish 



pisolite-like spherules . . i 

 Limestone, rubbly ; Pleuro- 

 tnya Goldfussi (Lycett), Li- 

 matula gibbosa (Sow.), Syn- 

 cyclonema demissum (Pliil- 

 lips), Holectypus depressus 

 (Leske) , etc. . . . . o 



