386 ME. L. RICHARDSON ON A SECTION [Aug. I903, 



it would be nearer to the quarter. This opinion, concerning the 

 limited area of the Lower Trigonia-Grit upon which the Upper 

 Trigonia-Grit rests, is supported by the fact that at Cowley- Wood 

 Quarry the latter deposit rests upon what appears to be the clay-bed 

 of the Buchnani-Grit (eastern end of the quarry) ; while just 

 over 6 furlongs to the south-west by south, and near Park House, 

 Brimpsfield, we see the Clypeus- and Upper Trigo ma-Grits above 

 the Upper Freestone, the surface of which is slightly bored by 

 Litliodomi and annelids. Similar phenomena would seem to 

 obtain south of the Birdlip anticline, in the neighbourhood of 

 Cranham Woods. At Dunley Quarry, as shown by Mr. Buckman, 

 the Upper Trigonia-Grit rests upon the Buchnani-Grit, and is 

 separated by a considerable thickness of deposit from the base of 

 the latter. Nevertheless, about 650 yards to the north-east the 

 ; intervening beds ' are absent : the Upper Trigonia-Grit rests 

 directly upon the Upper Freestone. 



As pointed out by Mr. Buckman, 1 Terebratula fimbria is not 

 uncommon in Cranham-Woods Quarry at 3^ feet, 4 feet, and again 

 at 4-i- feet, below the top of the Upper Freestone. The inference 

 which he draws is that the maximum of the Bajocian Denudation 

 was attained in this quarry, for 6 furlongs farther north 4^- feet of 

 Upper Freestone are visible, and yet there is no bed with Terebratula 

 fimbria. In connection with the exact location of this anticlinal 

 Lxis, the three following sections may be of interest. The first 

 is situated about nine-tenths of a mile south-west by west of 

 Brimpsfield Church. 



Section in Quarry near Brimpsfield. 

 i >'ine-tenths of a mile south-west by west of the Church.) 



Thickness in 

 Feet inches. 

 ( 1. Whitish, oolitic limestone, passing down 

 Clyfel'S-Grit. -i into a brownish rock in which Tere- 



hratula ylobata is abundant ; about ... 6 



(2. Grey, shelly limestone, surface of top-bed 



covered with Ostrea; Terebratula glo- 



lata, Ehynchonclla subtetrahedra, Eh. 



UrpicR angidata, Eh. hampenensis, Acantho- 



Tmgoxia- Grit. ] thyris spinosa, Avicula, Lima, Trigonia, 



Ostrea, etc 6 (> 



I 3. Brownish earthy deposit, with pebbles 



occasionally 2 



{^4. Whitish oolitic freestone, top-bed bored ; 

 Terebratula fimbria in stratum 2 feet 

 6 inches down ; (visible) 4 



This section is, I consider, one of the best of the Upper Trigonia- 

 Grit in the Cotteswolds. It is especially noticeable, on account of 

 the occurrence, somewhat abundantly, of Acantliothyris spinosa and 

 Zeilleria Hugliesi. The exact horizons at which Terebratula fimbria 

 was noticed were at 30, 35, and 39 inches down. A fifth of a 



1 Quart. Journ. Geol. Soc. vol. li (1895) p. 407. 



