[ 8*1 ] 

 XGII. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 

 [Continued from p. 760.] 



November 4th, 191-4. — Dr. A. Smith Woodward, F.R.S., President, 



in the Chair. 

 r PHE following communications were read : — 



1. 'The Inferior Oolite and Contiguous Deposits of the Doulting- 

 Milborne-Port District (Somerset).' By Linsdall Richardson. 

 F.R.S.E., F.G.S. 



In this paper a detailed description is given of the Inferior 

 Oolite and contiguous deposits in the country between the Bath- 

 Doulting and Sherborne Districts. It embraces the country around 

 Bruton, Castle Cary, and Blackford. 



In the northern half of the Doulting-Milborne-Port District 

 the bulk of the yellow Upper-Lias Sands is of dispansi hemera ; 

 but in the neighbourhood of Cole and Castle Cary the very top- 

 most portion is of dunwrtierice hemera. In the south-eastern 

 portion, under Stowell, while the main mass is probably of moorei- 

 dumorticrice hemera?, the upper 50 feet or more is certainly of 

 aalensis-moorei date. 



Throughout the greater portion of the district the Inferior 

 Oolite is, without doubt, non-sequentially related to the Upper- 

 Lias Sands. 



Rock of garantiance hemera spreads over the whole district, and 

 is everywhere non-sequentially related to the beds below. From 

 Doulting to the neighbourhood of Bruton the Garantiana Beds rest 

 directly on the Sands. In the neighbourhood of Cole, however, 

 there is a synclinal area, and beds of blagdeni, sauzei, witchellice, 

 shirbuiniia-, discita, and march isonce hemerie are seen between 

 the Garantiana Beds and the Sands. The lower portion of the 

 Discites Bed at Strutter's Hill, Cole, is precisely identical, both as 

 regards fauna! and lithic diameters, with the celebrated ' Fossil- 

 Bed ' of Bradford Abbas. 



None of these deposits seen in the neighbourhood of Cole is 

 met with again, until the neighbourhood of Corton Downs is 

 reached. An anticlinal axis runs through the middle of the 

 intervening tract, and is along a well-marked line of weakness. 



At Corton Downs are rocks of sauzei, ivitchellice, shirbuiruice, 

 discitce, bradfordensis, and murchisoncB hemerae — that of the first 

 hemera being identical with the 'marl with green [glauconite] 

 grains' at the well-known Milborne-Wick section. In this 

 southern portion of the district, as is the case also around Cole, 

 it is very difficult to determine the upper and lower limits of the 

 deposits of disci tee, shirbuiruia;, and ivitchellice hemera?. They 

 comprise grey sandy limestones with sandy and marly partings — the 

 whole of very uniform aspect and frequently rich in glauconite- 

 grains. 



Phil. Mag. S. 6. Vol. 28. No. 16b". Dec. 1914. 3 I 



