Page:Early Man in Britain and His Place in the Tertiary Period.djvu/44

Classification of British Eocene Strata.

1. Upper Eocene or Post-nummulitic = Proicène (Gervais).

Thickness
in Feet.

Conditions of Deposit.

French Equilavents (Gaudry).

1. Hempstead Marls, Clays, Sands ................................................................................................................................................................................................................................................................................................................................................................................................

170

1. Freshwater, Estuarine, Marine ................................................................................................................................................................................................................................................................................................................................................................................................

1. Bembridge Marls, Sands, Limestone ................................................................................................................................................................................................................................................................................................................................................................................................

80

1. Freshwater, Estuarine, Marine ................................................................................................................................................................................................................................................................................................................................................................................................

6^e Étage du Gypse de Paris.

1. Osborne or St. Helena Marls, Clays ................................................................................................................................................................................................................................................................................................................................................................................................

100

1. Freshwater, Estuarine ................................................................................................................................................................................................................................................................................................................................................................................................

1. Headon Marls, Sands, Clays ................................................................................................................................................................................................................................................................................................................................................................................................

260

1. Freshwater, Estuarine, Marine ................................................................................................................................................................................................................................................................................................................................................................................................

2. Middle Eocene or Post-nummulitic = Eocène (Gervais).

1. Barton Sands, Clays ................................................................................................................................................................................................................................................................................................................................................................................................

300

1. Marine ................................................................................................................................................................................................................................................................................................................................................................................................

5^e Étage des Sables de Beauchamp.

Bracklesham
Bagshot

$\scriptstyle {\left.{\begin{matrix}\ \end{matrix}}\right\}\,}$

1. Sands, Clays ................................................................................................................................................................................................................................................................................................................................................................................................

?

1. Marine ................................................................................................................................................................................................................................................................................................................................................................................................

4^e Étage du Calcaire Grosier de Paris.

Alum Bay and
Bournemouth

$\scriptstyle {\left.{\begin{matrix}\ \end{matrix}}\right\}\,}$

1. Sands, Clays ................................................................................................................................................................................................................................................................................................................................................................................................

?

1. Freshwater, Estuarine, Marine. ................................................................................................................................................................................................................................................................................................................................................................................................

3. Lower Eocene or Pre-nummulitic = Orthocène (Gervais).

1. London Clay ................................................................................................................................................................................................................................................................................................................................................................................................

480

1. Estuarine, Marine ................................................................................................................................................................................................................................................................................................................................................................................................

3^e Étage des Sables de Cuyse-la-Motte, Sables de Soissonnais.

1. Woolwich and Reading Sands, Clays, Plastic clays ................................................................................................................................................................................................................................................................................................................................................................................................

58

1. Freshwater, Estuarine, Marine ................................................................................................................................................................................................................................................................................................................................................................................................

2^e Étage des Lignites du Soissonnais.

1. Thanet Sand ................................................................................................................................................................................................................................................................................................................................................................................................

39

1. Marine ................................................................................................................................................................................................................................................................................................................................................................................................

1^e Étage des Gres de la Fère.