INFERIOR OOLITE SERIES : NOTGROVE. 129 
a Trigonia-bed at the base, but are otherwise somewhat barren. Mr. 
Buckman identifies the " Notgrove freestone " as forming the lower arid 
greater portion of this division. To the S.S.E. of Woodbridge (j) the 
Trigonia Beds are shown beneath the Clypeus Grit, and, in their upper 
portion, they yield Rhynchonella spinosa and Terebratula globata, but are 
otherwise not very fossiliferous. 
The Clypeus Grit was well shown in the cutting at the north end of 
Chedworth tunnel (M), where it consists of about 15 feet of coarse-grained 
rubbly oolite with many specimens of Pholadomya and Clypeus Ploti. 
On top a thin layer of reddish clay, probably belonging to the Fuller's 
Earth, was exposed. The Olypeus Ghrit was again exposed, in faulted 
positions, at the northern and southern ends of the deep cutting west of 
the Barrow (K), where it was overlaid by the Fuller's Earth. The top 
portion was somewhat ferruginous, and presented the aspect of iron-shot 
oolite. The best section of the beds was shown in the cutting S.S.E. of 
Woodbridge (j), where the beds occupy a gentle synclinal; we see the 
junction with the Trigonia Grit at the northern and southern ends, aud 
the beds are overlaid, in the centre of the basin, by the Fuller's Earth. 
The top of the Clypeus Grit, is a hard brown iron-shot oolite, with 
Pholadomya, Homomya, Terebratula globata, and Clypeus Ploti ; and above, 
there is about 6 feet of stiff red and blue clay with bands of ferruginous 
limestone at the base, yielding also Pholadomya and Homomya. These 
bands, which here seem hardly separable from the Fuller's Earth, are 
doubtless equivalent to the oolitic and sandy ragstones that overlie the 
Clypeus Grit between Notgrove and Bourto^i-on-the Water. (See p. 133.) 
The cuttings on the railway between Andoversford and 
Bourton-on-the-Water, have furnished a number of interesting 
sections of the Inferior Oolite, as well as of the Great Oolite 
Series. Attention was first drawn to some of these sections in 
1883 by Mr. E. A. Walford.* The beds, however, are faulted in 
so many places that it is only by piecing together the evidence in 
different cuttings that the sequence can be made out. This has 
been done by Mr. Buckman, f who has given a minute account of 
the beds and their fossils, and I have independently measured the 
sections and constructed diagrams of the strata exhibited in each 
cutting. In some minor respects my reading differs from that of 
Mr. Buckman. 
The General Section of the Inferior Oolite Series, between 
Andoversford and Bourton-on-the-Water, is as follows : 
FT. IN. FT. IN. 
flO. Ferruginous beds (local) - 3 to 8 
9. Clypeus Grit - 35 to 40 
Eagstones < 8. Trigonia Grit . 1 8 to 4 8 
I 7. Nocgrove Freestone - 10 
L 6. Gryphite Grit - - 15 
f" 5. Upper Freestone and Har- 
ford Sands about 8 to 14 
1 4. Oolite Marl - - - 30 
I 3. Lower Freestone (not fully seen) 25 
MidfordSand - 2. Sands - - - 12 to 15 
Upper Lias - 1. Clay. 
The Cotteswold (Midford) Sands were shown in the first cutting (T) west 
of Bourton station. There 12 to 15 feet of yellow slightly calcareous 
* Quart. Journ. Geol. Soc., vol. xxxix. p. 225. 
f Pc. Cetteswold Club, vol. ix. p. 108 ; see also Hudleston, Inf. Ool. Gastero- 
poda, pp. 69, 70. 
E 75928. 
