Geology Reference
In-Depth Information
N
Carboniferous
palynomorphs
ver syste
Silurian
palynomorphs
s
s
t
t
Norwich
and
Red Crag
Formations
Nettlebed
Formation
Carboniferous
palynomorphs
50 km
Rhaxella
chert
()
b
Carboniferous
chert
Vein quartz
pebbles
Spilsby
Acid volcanic
rocks
ter r
ive
Wroxham
Formation
Quartzite
Sandstone
Dobbs and
How Hill
Members
s s
s s
t
t
e
e
r
r
Vein
quartz
pebbles
Vein
quartz
pebbles
Greensand chert
Rhaxella
chert
()
c
Carboniferous
chert
Spilsby
Wroxham
Formation
ster riv
Quartzite
and
vein
quartz
pebbles
Sandstone
Mundesley
Member
m
Severn
lowlands
Greensand chert
Figure 14.3
Early Pleistocene and early Middle Pleistocene fluvial and offshore palaeogeography of midland and eastern
England and the adjacent North Sea basin. The heavy lines indicate main drainage trajectories based on 'long-established'
valley systems and Early and early Middle Pleistocene sediments. Over this period, eastern England acted as a depositional
centre for drainage from the Thames, Bytham, and Ancaster catchments. The distribution of lithostratigraphic units is
given, along with the location of outcrop of distinctive indicator lithologies, that were transported by the river systems to
the coastal zone. (a) The drainage system and extent of coastal deposits at the time of deposition of the Red and Norwich
Crag Formations. (b) The drainage system and extent of coastal deposits at the time of the deposition of the Dobb's
Plantation and How Hill Members of the Wroxham Crag Formation. (c) The drainage system and extent of coastal
deposits at the time of deposition of the Mundesley Member of the Wroxham Crag Formation.
Source:
After Rose
et al
. (2001)
