VOL. XVII. (2) INFERIOR OOLITE— CHIPPING NORTON 



213 





Towards the tunnel-end of the western bank the Coral- 

 Bed becomes well-defined and therefrom the late R. F. Tomes 

 collected a number of corals.' 



The record given by Mr H. B. Woodward is based upon 

 those published by Beesley and Walford. This section also 

 agrees in general with the present one, and the beds numbered 

 25 and 26a, b and c in my section correspond to those that are 

 bracketed together by Mr Woodward as equivalent to the 

 " Northampton Beds." Mr Woodward observes that^ 



" the Chipping Norton Limestone is, no doubt, represented in the 

 upper strata, while lower down, the Clypeus-Grit and the Trigonia- 

 Grit of the Cotteswolds may be represented in point of time." 



The Clypeus-Ght is probably represented by the Con- 

 glomerate-Bed, and it may be that the Coral-Bed is on the 

 horizon of the Upper Coral-Bed of the Cotteswolds and Bath- 

 Doulting district ; but I did not notice any representative of 

 the Upper Trigonia-Grit. 



No. 9. THE HOOK-NORTON RAILWAY-CUTTING SECTION 

 (West side of the Cutting) 



Thickness in feet jns. 

 Soil, with here and there, according to Wal- 

 ford," pieces of the Exelissa- and Astarte- 

 Limestones ;' Cyathopora pratti, E. & H., 

 C. liiciensis, E. & H.,'' etc.. . . . . . 06'' 



Non-sequence 

 Horizon of Plant-Bed. Limestone, flaggy, 

 white, oolitic . . . . . . . . 20 



Sand, weathering white and very conspicuous 3 6 

 Limestone, bored in places by annelids . . 19 

 Sand, brown and yellow 1 With Ostrea cal- 011 

 Limestone, sandy > ceola and Lima, o 4 



Sand, brown and 3'ellow ) {teste Walford) . . 05 

 Limestone, sandy, with incipient " pot-lid " 



structure at the base : 2 ft. 3 ins. to 3 ft. . 2 3 

 Sand, yellow and brown ; Serpula & Ostrea o i 

 Limestone, sandy. The top-surface of this 

 bed is often well waterworn and pitted and 

 covered with oysters . . . . . . i 10 



Sand, coarse, gritty . . . . . . . . 02 



"Old Man." Limestone, hard, brown, san- 

 dy, with a waterworn surface covered with 

 oysters and pebbly at the base . . . . 13 



Sand, brown and yellow, with occasional 

 " knots." . . . . . . . . . . 02 



Limestone, brown, shelly ; Pteria inaqtnval- 

 vis, auctt., and shell-fragments : about . . i 11 



15. Clay, dark, with a brown layer . . . . 07 



16. Limestone, shelly . . . . . . . . 05 



17. Clay, arenaceous .. .. .. .. 02 



.^18. Limestone, hard, sandy, brown but blue-cen- 



J ;z; tred, with numerous pieces of lignite . . 10 



19. " Plant-Bed " (of Walford). Limestone, 

 brown, sandy, full of brown fragments of 

 lignite. This bed is really the bottom-por- 

 tion of 18 . . . . . . . . . . 



20. Clay 

 I, L21. Limestone, brown, shaly, and marl 



1 Proc. Geol. Assoc, vol. vi., No. 4 (1879), PP- 152-165. 



2 " The Jurassic Rocks of Britain, etc." vol. iv. (1894), p. 155. 



3 Quart. Journ. Geol. Soc, vol. xxxix. (1883), p. 230. 



4 The thicknesses of beds i to 9 are extracted from Mr Walford's record, but were checked 

 as far as was possible. 



5 And probably of the Lower iV(Ti»nsa-Bed as well. 



6 Proc. Geol. Assoc, vol. vi., No. 4 (1879), p. 161. 



7 Beds 2 to 13 = Block E of Walford ; beds 14 to 21 = his Block D ; and 22a and 6 (Wal- 

 ford's beds 22-24) = his Block C. 



fiS- 



14. 



4 

 2i 



