392 



ME, L. RICHARDSON ON THE INTERIOR OOLITE [NOV. I907, 



It is possible that the clay -bed in the cutting is a later deposit 

 than this stratum, and that the latter may be a continuation of one 

 of those hard beds such as Mr. H. B. Woodward observed above the 

 Midford Sands. Mr. Hudleston, however, has obtained, from some- 

 where near Cranmore, ammonites 1 which Mr. S. S. Buckman has 

 recently informed me indicate Struckmanni hemera. Consequently, 

 there appear to be Midford Sands in the neighbourhood of that 

 village, of later date than the bed of striatuli hemera seen in the 

 wayside section. The facts, when graphically represented, suggest 

 an elevation, with the greatest uplift to the north-west or there- 

 abouts, and erosion (Bajocian denudation), followed by the non- 

 sequential deposition of the ' Conglomerate-Bed.' Above the ' Con- 

 glomerate-Bed ' in the railway -cutting come the Doulting Beds — 

 the Dundry Freestone and the Upper Coral-Bed, which have a 

 maximum thickness of about 35 feet, are absent. 



Fig. 1. — Diagram, to show the probable relationship of the ' Con- 

 glomerate-Bed ' to the underlying deposits in the neighbourhood 

 of Doulting. 



£« 



-g 



CDrtf 



^ 



IS 



>J 



a 



o °J 



s= 





"S 



w 



03 



Doulting Beds. 



Sands. 



Striatal urn -Bed. 

 Sands. 



' Conglomerate- 

 Bed.' 



1 



}■ Struckmanni. 



> striatuli. 



The Doulting strata, which succeed the ' Conglomerate-Bed ' 

 in the Doulting area, are divisible into two parts — a lower, 

 the Doulting Stone, composed of the Freestone and associated 

 beds, and an upper, the ^4na6acm-Limestones. The occasional 

 occurrence of oysters on the upper surfaces of some of the component 

 strata of the Doulting Beds, and the borings of Lithophagus indusus 

 (Phillips) and annelids, are, of course, indicative of the formation of 

 the rocks in shallow water not far from land ; but they also point 

 to slight non-sequences. 



The Anabacia-Limestones, which, owing to their whiteness, even- 

 sized oolite-granules, and numerous casts of Anabacia complanata, 

 are so readily recognized, vary much in thickness in this section. 

 Their top-bed is completely riddled by Lithophagi and annelids, and 

 usually internal casts of the mollusks remain in the crypts. 



The Eubbly Beds are not at all easy of access in the cutting, but 



1 ' Monogr. Inf. Ool. Ammonites Brit. Is.' pt. iv, Palaeont. Soc. (1890) p. 168. 



