126 
LOWER OOLITIC ROCKS OF ENGLAND: 
o 
O 
f- 
1 
Clypeus Grit 
(7). 
Trigonia Grit 
(6). 
FT. In. 
Clay, with bands of reddish ferru- 
ginous limestone at base : Avi- 
cula ecliinata, Homomya, Phola- 
domya, &c. - 6 
22. Soft marly and rnbbly beds, 
with coarse oolitic grains 
the top layer a hard brown 
iron-shot bed : Clypeus Ploti, 
Homomya, Pholadomya, Tere* 
bratula globata, &c. - - 15 
21. Hard earthy and shelly oolitic 
limestones, unfossiliferous in 
places. Ammonites Martinsi, 
Cardium Buckmani, Modiola, 
Myacites, Trichites, Ostrea, 
Pecten, Rhynchonella spinosa, 
Terebratula globata, &c. - 25 
20. Marly ferruginous oolite, 
Gryphite Ammonites, Gryphcea sublo* 
Grit (5). bata, Modiola, Myacites, Pho- 
L ladomya fidicula, &c. 16 to 18 
19. Black shelly clay and lami- 
nated loamy bed - 8 to 1 6 
Upper Free- f 18. Hard freestone, bored on top, 
stone (4). I shelly in places, Trigonia - 18 
V w V 
17. Bather sandy oolite, iron- 
stained in places and 
obliquely bedded, with cal- 
careous sandy beds - 15 to 25 
16. Ferruginous marly bed, nodu- 
lar in places (impersislent) 
1 Oto 1 2 
15. False-bedded white oolite, 
bored at various horizons 
8 to 9 
14. Marl - - - - 2 
13. Oolite - - - - 1 
f" 12. Oolitic and pisolitic marl 3 
j 11. Shelly oolite and pea-grit in 
massive beds, used for build- 
ing: Echini, Trichites, Tere- 
bratula plicata - - 9 
10. Ferruginous oolite or iron- 
stone, , and brownish shelly 
limestone, with earthy layers, 
Gresslya - - 10 to 12 
9. Ferruginous earthy limestone, 
with veins like Dagham 
Stone, and softer earthy and 
sandy layers : Belemnites, ^12 
Isocardia ... 
8. Hard ferruginous, shelly and 
crinoidal limestone - 
Midford Sand I 7. Brown sand - - 2 
(2). ] 6. Clay - ... 
5. Yellow ferruginous sand - 
4. Bluish-grey clay with ferru- 
ginous streaks - 5 
3. Yellow micaceous and ferru- 
ginous sands - 4 
2. Bubbly ironstone layer - 2 
1. Grey laminated clay and sand - 2 
Lower Free- 
stone (4). 
Pea Grit Series J 
(3). 
