388 ME, L. EICHAEDSON ON A SECTION [Aug. I903, 



The section below again shows : — Thickness in 



Feet inches. 



Upper Freestone. 2. Yellowish-white freestone ; about 7 



C 3. Yellowish-white marl crowded with Tere- 

 _ M J bratula fimbria, var., and less so with 



Uolite-aiarl. T submaxillata and Bhijnchonella 



[_ subobsoleta ; (visible) ..., 1 2 



The foregoing record shows a thickness of ]0 feet 8 inches for the 

 Upper Freestone. It is in the uppermost 2 inches of the Oolite- 

 Marl that Terebratula fimbria occurs the most abundantly, and the 

 majority of the specimens are very coarsely fimbriated. 



The evidence afforded from the horizons at which Terebratula 

 fimbria has been noticed in the particular quarries in which the 

 Upper Freestone is exposed, and mentioned in this paper, would 

 indicate that the maximum upheaval of the strata in the Birdlip 

 area is as shown in the sketch-map (p. 382). As regards the 

 geographical extent of the subdivisions upon which the Upper 

 Tri(/onia-(jiit rests to the south-west of this anticlinal axis I give 

 it on the. authority of Mr. S. S. Buckman. 1 



That the forces which caused the flexuring of the strata, and the 

 consequent erosion known as the ' Bajocian Denudation,' affected 

 the Lias.sic rocks also, is obvious. Consequently, the exact location 

 of the anticlines and synclines of the Inferior-Oolite rocks in the 

 Cotteswold Hills, where sections are numerous, may afford some 

 important working hypotheses for unravelling the structure of the 

 Yale of Gloucester, where excavations are few. 



Discussion. 



The Rev. H. H. Winwood said that the Author was doing a 

 good work in the Cotteswold district, and evidently working on 

 Mr. Buckman's lines, adopting both his views and nomenclature. 

 The many details given in the paper required careful reading and 

 consideration before an opinion of any value could be formed. 



Mr. H. B. Woodwaed looked upon the Cotteswold fossiliferous 

 1 grits ' as representing local conditions of the sea-bed. The 

 remarkable point was the extension of the Upper Trijjonia-Grit 

 over the other beds. The anticline, if drawn to scale, was not 

 very conspicuous. 



Mr. It. 8. Heeeies thought that it was impossible for anyone not 

 knowing the ground in detail, to follow or accept inferences of 

 denudation founded on the thinning-out in a single quarry of a 

 bed 4 inches thick ; but the evidence was sufficiently convincing 

 when pointed out on the spot by Mr. Buckman. 



Prof. Geoom thought that the interest attached to an uncon- 

 formity was not always in proportion to the magnitude of the 



1 Quart. Journ. Geol. Soc. vol. lvii (1901) pi. vi. 



