INFERIOR OOLITE : DEDDINGTON. 
oolite and sandy oolitic limestone have been opened up. The beds 
contain Trigonia and Lima, and are overlaid by about 3 feet of 
clay with fragments of Ostrea. South of Enstone (east of the 
69th milestone) the beds Avere again exposed ; and the Giant's 
Stone or Hoar Stone, a block about 11 x 7 x 3 feet, is formed 
of the rock. In character these beds correspond with the Chip- 
ping Norton Limestone ; but they may include strata on a lower 
horizon. 
About one-third of a mile north of Dunthrop the following 
section was exposed : 
FT. ITS, 
Brown clayey soil - -06 
'"Flaggy oolite - -.-IS 
Coarse marly oolite with Ostrez [? = Clypeus 
Grit] 
Kagstones<! 
Shelly oolite with pebbles of oolite and 
numerous casts of shells, especially 
Trigonia costata; with Ammonites (rare), 
Lima, Ostrea, and Corals, Isastrcea 
RicJiardsoni, &c. - - - 1 9 
("Hard false -bedded marly oolitic limestone, 
Oolite I with Ostrea: passing down into coarse 
Marl P j shelly, pisolitic and oolitic limestone, 
L with Lima cardiiformis - - 13 
These beds may be compared with those opened up north-west 
of Heythrop Church; in the quarries east of Sarsgrove on the 
road from Burford to Chipping Norton : and in a quarry on t'he 
Banbury Road about 3 miles from Chipping Norton. The 
junction with the sandy series below was shown, in a quarry 
about a quarter of a mile to the eastwards of the one last-- 
mentioned, on the road to Little Tew. 
These sections at Dunthrop and Heythrop are important, for 
here it would appear that we have evidence of two limestone 
divisions the upper portion of which represents the Chipping 
Norton Limestone, perhaps the Clypeus Grit, and the Trigonia 
Bed at Fawler and the Coral Bed of Hook Norton : the lower 
portion may represent beds parallelled with the Oolite Marl and 
with portions of the Lincolnshire Limestone. Precise correlatioa 
is however very hazardous, 
Proceeding further east we come, near Deddington, to the two 
important sections described by Prof. Judd. The lists published 
by him suggest that we have representatives there, not only of the 
Oolite Marl or Upper Freestone of the Cotteswolds, but of higher- 
stages, indicated by Clypeus Ploti, Terebratula globata, &c, 
Judging also from the fossils obtained from the Lincolnshire 
Limestone in certain places, as at Tinkler's quarry, Stamford,* rt 
would seem that the upper portion of the Inferior Oolite is .ta 
some extent represented in that division. 
About a mile north-west of Deddington, in the parishes of 
Little Barford (or Barford St. John) and Great Barford (or 
* See Judd, Geol. Kutland, p. 160. 
E 75928. T, 
