SUPERPOSITION OF THE STRATA 
13 
TERTIARY FORMATIONS. 
{Partly Marine and partly Freshwater.) 
Formations. 
Plastic Clay. 
Subdivisions and Mi. 
neralogicul Cha- 
raeters. 
Clay, sand, and gravel. 
Organic Remains, Observa- 
tions, ^c. 
Localities. 
Potamidcs, Cyclades, Ostreap, 
Cyrena*, teeth of tishes, &c. 
Leaves of terrestrial vegeta- 
bles ; cone of an unknown 
plant. 
Subsulphate of alumine, 
gypsum, surturbrand, &c. 
■ CastleHill.nearNew. 
haven. 
Chimting Castle, near 
J Seaford. 
1 Palmer, Lewes, &c. 
Insulated patches in 
many other locali- 
. ties. 
Blue Clay. 
London Clay.- 
Grey calcareous 
sandstone. 
’ Ampullaria:, 'I'urritella:, Ve- ' 
nericardio:, and other ma. 
rine shells peculiar to the - 
London clay. Vertebra?, 
teeth, and palates of fishes. 
I ■ Pectunculi. Vermicularis, Y 
Ampullaria;, Nautili, Pin- > 
C nae, teeth of fishes, &c. J 
Bracklcsham Bay, 
Stubbington, &c. 
Bognor, Barn, and 
Mixeu Rocks, 
SECONDARY FORMATIONS. 
{Marine Deposits.) 
Chalk Form- 
ation. 
Upper beds, 
cretaceous. 
■ Chalk with flints. 
{Craie blanche.) 
Chalk without flints. 
Grey marl. 
{Craie tufeau.) 
Firestone, or upper 
green saml. 
{Craie chlorMe, ou - 
glauconie Cray, 
etesc.) 
Gault, or Folkstonc 
marl ; a blue marl, 
with veins of red 
ochre. 
Nodules and veins of flint ; " 
pyrites, chalcedony, crys- 
tallised carbonate of lime, 
&c. Ammonita;, Nautili, 
Belemnitte, &a fishes,Crus- 
tacea, Echini ; Vertebra?, 
and other bones, of saurian 
animals ; zoophytes, wood, 
marine plants. 
Pyrites ; calcareous spar ; " 
fishes, Crustacea, shells, ( 
zoophytes, Echini, wood, ( 
marine plants. 
Calcareous spar. Pyrites, Am- ' 
monitaj, Turrilita;, Scaphi- ( 
ta;. Echini; fishes rarely; ( 
Crustacea; marine plants. 
Marl, with an intermixture ' 
of green sand. Ostrea ca- 
rinata. Cirri, Ammonite, 
Turrilitac, and other fossils 
of the grey marl. 
Gypsum ; sulphuret of iron ; “ 
Nucula?, Belemnilffi, Am. 
monitie. Nautili, Catdii, In- 
ocerami ; fishes, Crustacea, 
&c. 
Upper portion of the 
South Downs. 
Lower division of the 
South Downs. 
Base of the Downs ; 
Hamsev, South- 
bourn, Lewes, &c. 
Southboum, Steyn- 
ing, Bignor, Nurs- 
ted ; on the north- 
ern edge of the 
Grey Marl. 
Willingdon, Ring- 
mer, Newtimber, 
near Arundel, &c. 
Lower beds, _ 
arenaceous. 
Shan KLIN Sand. 
Sand of various co- 
lours : green, grey, 
white, and ferrugi- 
nous. 
Beds and concretions 
of chert, &a Iron- 
stone. i. 
Sandstone and are- / 
naceous limestone, i 
Casts of Gervillise, Trigonia;, 
Patella;, Modiola;, Veneri- 
cardiae, &c. 
Nautili, Ammonita;, Hamites, 
CucuUca;, Pholadomya;, 
&c. 
r Pevensey, Chilley, 
I Langney Point, 
J Laughton, Ditch- 
1 ling,\Vhiston, Par- 
I ham, Haslemere, 
C Pulborough, &c. 
f Petworth, Pulbo- 
y rough, Brinkshole 
C Western Sussex. 
