Search
Menu
Home
Sources
About
Contacts
British Coastal Deposits Group
The
British Coastal
Deposits
Group
is a
Quaternary
lithostratigraphic
group
present in
coastal
and
estuarine
areas around the margins of
Great Britain
. They are a
mix
of
sands
,
gravels
,
silts
, clays and
peat
and,
north
of
a line
between the
Ribble
and
Tyne
, include glacio-eustatically
raised
deposits
. They
lie
unconformably
on deposits of variously the
Britannia Catchments Group
,
Albion Glacigenic Group
,
Caledonia Glacigenic Group
,
Dunwich Group
,
Crag Group
or earlier
bedrock
. Their
upper
boundary
is the
present day
ground
surface
.