Saliferous and gypseous } Marnes irisées Keuper. 1,000 feet.
shales and sandstone }
Wanting { Muschelkalk or Calcaire } Muschelkalk. 600 feet.
{ coquillier }
Sandstone and quartzose } Grès bigarré Bunter-Sandstein.
conglomerate } 1,500 ft.
The following has been shown by Mr. Ed. Hull to be the general
succession of the Triassic formation in the midland and north-western
counties of England, where it attains its greatest vertical development,
thinning away in the direction of the mouth of the Thames:--
Foreign Equivalents.
--------------------
/ NEW RED MARL. Red and grey shales and Keuper. Marnes
| marls, sometimes micaceous, irisées.
| with beds of rock-salt
| and gypsum, containing
| _Estheria_ and _Fora-
| minifera_ (Chellaston).
|
| LOWER KEUPER Thinly-laminated mica- Letten
| SANDSTONE. ceous sandstones and Kohle (?) „
T | marls (waterstones);
R | passing downwards into
I | white, brown, or reddish
A | sandstone, with a
S | base of calcareous con-
S | glomerate or breccia.
I |
C< Wanting in ... Muschelkalk. Calcaire
| England. coquillier.
S |
E | UPPER MOTTLED Soft, bright-red and \
R | SANDSTONE. variegated sandstone |
I | (without pebbles). |
E | |
S | PEBBLE BEDS. Harder reddish-brown | Bunter Grès bigarré,
. | sandstones with quartz- | Sandstein. or Grès des
| ose pebbles, passing > Vosges (in
| into conglomerate; | part).
| with a base of calca- |
| reous breccia. |
| |
| LOWER MOTTLED Soft bright-red and |
| SANDSTONE. variegated sandstone |
\ (without pebbles). /
P / UPPER PERMIAN. Red marls, with thin- Zechstein.
E | bedded fossiliferous
R | limestones (Manchester).
M |
I | / Red and variegated sand- \
A | | stone (Collyhurst, Man- |
N | | chester) represented by |
< | [...]. |
S | | |
E | LOWER < Reddish-brown and purple > Rothe-todte- Grès des
R | | sandstones and | liegende. Vosges (in
I | | marls, with calcareous | part).
E | | conglomerates and |
S | | trappoid breccia. |
. \ \ (Central counties). /