78 LOWER OOLITIC ROCKS Or ENGLAND: 
of Inferior Oolite and underlying Midford Sand, being faulted on 
the west against the Fuller's Earth, , and on the east against 
Inferior Oolite and Sand, with a lesser downthrow.* Many 
fossils are to be obtained in this cutting, and a list is given (p. 81). 
FT. IN. 
7. Clays with band of shaly limestone : Waldheimia (crushed) -< ^ ^ 
6. Pale-grey oolitic limestones : Ammonites Parkinsoni, Iso- ~\ 
cardia minima, Terebratvla sphceroidalis - - 6 
5. Rubbly layer : with Sponges - 3 
4. Pale grey limestones (iron-shot in places), with marly I T , . 
partings : Belemnites, Ostrea, &c. - 1 3 j Q~^ 
3. Brown and bluish iron-shot oolite : Ammonites concavus, 
A. Sowerbyi, Belemnites, Astarte, Trigonia, &c. - - 3 | 
Bluish iron-shot limestones : Ostrea, Pecten, Corals - 4 j 
2. Hard blue-hearted sandy limestone, " Dew Bed " - - 8 "j -.,. ,,, , 
1. Sands, with concretionary masses of calcareous sandstone - [ Sand. 
F. Faults. 
The lower portion of bed (3) resembles the blnish iron-shot oolite of Loders. 
At Halfway House, between Yeoviland Sherborne, the Inferior 
Oolite has been well exposed in several quarries. The section in 
1884 was as follows : 
FT. IN. 
Rubble and red friable loamy soil - 1 
{Thin rubbly pale-grey and creamy 
oolitic limestones and marl (burnt for 
lime). Ammonites Parkinsoni, &c. -GO 
Pale grey and brown earthy oolitic 
Iimeltones with marly divisions: 
shelly in places and false-bedded - 9 
Marl with Astarte obliqua. 
JPale grey, brown, and blue oolitic and 
iron-shot limestones ; shelly in the 
-.!- _ K fi 
< upper part 
-l 
Tough bluish-grey shelly limestone 
_ (Dew-bed) - - ' - ' - 1 9 
Sands, &c. 
Here there is no marked lithological distinction in the beds 
which are separated only by marly partings. Large specimens of 
the Ammonites " Dorsetensis " of Dr. Wright (= A. Parkinsoni), 
together with Nautilus lineatus, occur in the upper beds, and like 
the specimens obtained near Bridport, have been cut and polished 
for sale. The lower beds yield Ammonites concavus, &c. 
Sections at Halfway House have been described by Dr. Wright,t 
Dr. H. B. Holl,t Mr. Hudleston, and Mr. Buckman.|| 
To ihe east of the Halfway House the iron-shot limestones are 
shown to a thickness of 6 feet, resting on brown sandy and 
shelly limestones, about 2 feet thick. The lower portions of the 
iron-shot beds contain Ammonites concavus, A. Murchisona, Nau- 
* A diagram of this cutting was given by Prof. Buckman, Bath and W. Eng. 
Agric. Journ., vol. xiv. p. 49. See also notes on Wyke Quarry, by S. S. Buckmau, 
Quart. Journ. Geol. Soc., vol. xxxvii. p. 590. 
f Quart. Journ. Geol. Soc., vol. xvi. p. 34. 
j Ibid., vol. xix. p. 307. 
Inf. Ool. Gasteropoda, p. 46. 
|| Quart. Journ. Geol. Soc., vol. xlix. p. 486. 
