A book of the west. Volume 1, Devon : $b being an introduction to Devon and CornwallBaring-Gould, S. (Sabine)
History
A book of the west. Volume 1, Devon : $b being an introduction to Devon and Cornwall
Baring-Gould, S. (Sabine)
Devon (England)
ROGERS (W. H. H.), _Memorials of the West_. Exeter, 1888.
FARQUHARSON (A.), _The History of Honiton_. Exeter, _n.d._, but
1868 (_scarce_).
For the Axe Valley: PULMAN (G. P. R.), _The Book of the Axe_.
London, 1875.
CHAPTER IV.
A LANDSLIP
The chalk beds on sand--The subsidence of 1839--The great
chasm--Present conditions--The White Cliff--Beer quarries--Jack
Rattenbury.
There are a good many more curious things to be seen in England than
is generally supposed, if we will but go out of the highways to look
for them. Certainly one of the most extraordinary and impressive is
the great landslip between the mouth of the Axe and Lyme Regis; one
which even extended further west beyond the estuary. On this bit of
coast, where Devonshire passes into Dorset, the cliff scenery is
very fine. The White Cliff is a magnificent headland that possesses
the peculiarity of appearing to lean over preparing to slide into
the waves, owing to the inclination of the varicoloured strata of
which it is composed. To understand the phenomenon which occasioned
the subsidence of a whole tract of coast with the alteration of the
coastline, something must be said of the cause of the catastrophe.
The chalk bed striped with lines of glistening black flints is
superposed upon a bed of what is locally termed fox earth, a bed of
gravel or sand that intervenes between it and the clay beneath. Now
the rain that falls on the chalk downs infiltrates and, reaching the
sand and unable to sink through the clay, breaks out in land springs.
But where the chalk cliffs start sheer out of the sea, there the
springs ooze into the sea itself, and, dissolving the texture of
the sandy bed, resolve it into a quicksand, liable at the time of
great floods to be washed out from under the superincumbent chalk.
Should this take place, there is no help for it, but down the chalk
bed must go. If you were lying on a bed, and the mattress under your
feather bed were pulled away, you would descend, sinking to a depth
equivalent to the thickness of the subtracted mattress. That is
plain enough.
Now all along the coast to the east of Lyme Regis there is an
undercliff--evident tokens of a subsidence of this description which
has taken place at some time. When this undercliff has been eaten up
by the sea, and a fresh face of crag exposed, then again there will
occur a displacement, a pulling out of the mattress, and down will
go the chalk above with all the houses and fields upon it. But the
sea has not as yet done more than nibble at this undercliff.
It was not quite so to the west of Lyme. There sheer cliffs of
glistening white rose above the pebbly shore, so abruptly and with
such slight undulations, that several miles ensued before it was
possible for those on the height to descend to the beach. Naturally,
where the rain-water percolated through the chalk it formed no
valleys with streams.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account