THE PRINCIPAL STRATA IN EUROPE. 
TABLE II. continued. 
391 
Periods and 
Groups. 
H 
3 
o 
« 
a 
o 
(73 
03 
S 
P 
1-3 
8 
aT 
"o 
o 
Names of the principal Memhers and general Mine- 
ral nature of the Formation. 
1. Portland beds (marine). — Coarse 
shelly limestone, fine-grained white 
limestone, compact limestone — all 
more or less of an oolitic structure ; 
beds of cherts. 
2. Kimmeridge clay (marine). — 
Blue and greyish-yellow slaty clay, 
containing gypsum, bituminous slate 
(Kimmeridge coal). 
3. Coral rag (marine). — Calcareous 
shelly freestones, largely oolitic ; 
coarse limestone, full of corals ; yel- 
low sands; calcareous siliceous grits. 
4. Oxford clay (marine). — Dark 
blue tenacious clay with septaria, bi- 
tuminous shale, sandy limestone (Kel- 
loway rock), iron pyrites, gypsum. 
5. Cornbrash (marine). — Grey or 
bluish rtibbly limestone, separated by 
layers of clay. 
6. Forest marble (marine). — Cal- 
careo-siliceous sand and gritstone ; 
thin fissile beds of limestone, with 
clay partings ; coarse shelly limestone. 
7. Great oolite (marine). — 'White 
and yellowoolitic calcareous freestone, 
coarse shelly limestone, layers of clay. 
Oolitic limestone, with remains of 
land animals, birds, amphibia, plants, 
sea-shells (a). 
8. Inferior oolite (marine). — Ful- 
ler's earth, soft freestone, sand with 
calcareous concretions. 
Some of the Localities where the Formation occurs. 
Isle of Portland, Tisbury in Wilt- 
shire, Aylesbury. 
Near Kimmeridge on coast of Dor- 
setshire — Sunning Well, near Oxford. 
Headington, near Oxford — Farring- 
don, in Berkshire — Calne and Steeple 
Ashton in Wiltshire — Somersetshire. 
New Malton, in Yorkshire — Lin- 
colnshire — Cambridgeshire — Hun- 
tingdonshire, and midland counties — 
abundantly near Oxford— Somerset- 
shire — Dorsetshire. 
Malmsbury, Atford, Wraxall, Chip- 
penham. 
W'hichwood Forest, Oxfordshire- 
Frome, south-east of Bath. 
Kettering, in Northamptonshire — 
Bath— Burford, in Oxfordshire — 
Bradford, in Wiltshire. 
(a) Stonesfield, near Woodstock, 
Oxfordshire. 
Cotteswold Hills — Dundry Hill, 
near Bristol. 
Limestones of various qualities, clays, sands, and sandstone, containing the 
same fossils as those occurring in the series of the oolitic group of England, 
constitute the main body of the Jura chain of mountains, and cover vast 
tracts of country in Germany. 
