File:The Quarterly journal of the Geological Society of London (12512773485).jpg

1872..
MEYER WEALDEN AND " PTJNFIELD EOBMATION.
253
the relation of the Neocomian series of Punfield to that of Wor-
borrow Bay and Atherfield. It shows at a glance the comparativa
thickness of the strata in these
' ^ ' three localities, with their rela-
tive distances from each other.
DisoirssioK.
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© 43
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Mr. GoDWiN-AtrsTEN did not
agree with Mr. Judd in calling
the bed at Punfield the " Pun-
field formation ; " it was merely
a bed intercalated between beds
of a different character below and
above. There could be no doubt
of the Wealden deposits extend-
ing over an area at least equal
in extent to many of the fresh-
water lakes at present in exist-
ence ; and the freshwater condi-
tions exhibited by the Wealden
must have been in existence
during an immense length of
time. At Punfield alone, how-
ever, was there evidence of the
transition from freshwater to
marine conditions; one reputed
case seemed to be merely an in-
stance of landslip. The change
from one condition to the other
might, he thought, be due to a
very slight depression. The Neo-
comian series, such as was known
to continental geologists, could
hardly be recognized in Britain ;
and it was only during the last
portion of that period that any de-
posits took place in this country.
The phenomena of the Wealden
deposits might, he believed, be
traced over a much larger area
than was commonly supposed,
and certainly as far as Saxony.
He considered that the same area
of land continued through both
the Jurassic and the Cretaceous
times.
Prof. Ramsay thought that the
Purbeck strata were connected