| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
AGE
OF
MAM-
MALS. | – | | POST
TERTIA-
RY. | – | | | PLEISTO-
CENE,
or
Quater-
nary. | – | | Recent
and
Pre-
Historic. | – | | Blown Sand and Shingle. |
| Alluvium and River Deltas. |
| Burtle Beds of Somerset. |
| Clay, with Scrobicularia of Pagham, Morecombe, &c. |
| Submerged Forests of Bristol Channel, &c. |
| Peat Bogs of Ireland and Peat Beds of England. |
|
Post
Glacial | – | | Raised Beaches. |
| Cave Deposits | – | | Cave Earth and Loam.
Stalagmite and Bone-breccia. |
| River Gravels, Brick Earths, and Freshwater Clays, with Mammalian Remains. |
| Gravels of Bedford Levels, Salisbury, and other Old Valley Gravels and Alluvia. |
| Tufa and Shell-marl. |
|
| Glacial | – | | Kaimes or Kames of Scotland. |
| Eskers or Escars of Ireland. |
| Drift (Upper Boulder Clay or Till, Marine Gravels, Lower Till and Moraines), Scotch and Welsh, Loess of the Rhine, &c. |
|
Pre-
glacial | | Forest Bed of Norfolk Shore. |
|
KAINO-
ZOIC,
OR
TERTIA-
RY. | – | | | PLIO-
CENE. | – | | Crag | – | | Mammaliferous Crag | | – | Norwich and Chillesford Crag (Newer Pliocene). |
| Red Crag |
| Coralline Crag (Suffolk Crag) (Older Pliocene). |
|
| MIOCENE. | – | | Leaf Bed of Mull. |
| Lignite of Antrim. |
| Bovey Beds, with Lignite. |
|
EO-
CENE. | – | | Upper
Eocene. | – | | Hemp-
stead
Beds | – | | Corbula Beds. | | – | Fluvio-Marine Series. |
| Upper | | – | Freshwater and Estuary Marls. |
| Middle |
| Lower |
|
Bem-
bridge
Beds | – | | Bembridge Marls. |
| „Limestone. |
|
Middle
Eocene. | – | | Osborne
Beds | – | | St. Helen's Sands. |
| Nettlestone Grits. |
|
Headon
Beds | – | | Upper | | – | Headon Beds. |
| Middle |
| Lower |
|
Bagshot
Beds | – | | UpperBagshot | Sand. |
| Middle„ | – | | Barton Clay.
Bracklesham Beds. |
| Lower„ | Sand and Pipeclay, with Plants. |
|
Lower
Eocene. | – | | London
Tertia-
ries | – | | London Clay and Bognor Beds (Upper London Tertiaries). |
| Ol
shelly, with Bala Limestone, Shale, and Slate) |
|
| Llandeilo | – | | Llandeilo Flags and Limestone, &c. |
| Tremadoc Slates. |
Lingula
Beds | Lingula Flags. (Primordial Zone of Barrande). |
|
| EOZOIC. | – | | Cambrian. | | – | Cambrian | – | | Harlech Grits, &c. |
| Purple Slates and Grits (St. David's). |
| Llanberis Grits and Slates. |
| Longmynd Rocks. |
| Red Sandstone and Conglomerate (Scotland). |
|
| Laurentian | – | | Fundamental Gneiss of the Outer Hebrides and of the N.W. coast of Scotland, &c., containing the oldest known fossil, Eozoon Canadense. |
