Hermonie posted the below two web pages:
Wiki on Cantre'r Gwaelod - [
en.wikipedia.org]
Cantre’r Gwaelod – The Lost Land of Wales
[
www.bbc.co.uk]
It sounds strangely like what happen to the area within
a macrotidal estuary near Portage, Alaska during the 1964.
Good Friday earthquake. Before the earthquake, which
happened at low tide, a large part of the estuary,
including a gas station, hunting cabins, and associated
section of highway was high and dry above high tide. The
earthquake happened and although it gave the gas station
owners a scary ride and broke a few dishes, it seemingly
failed to cause any significant damage to the gas station,
hunting cabins, or the section of road. However, when
the next high tide came in, the gas station owners found
almost a couple of feet of water in their gas station
and adjacent hunting cabins, and covering the road.
Although there was not any immediate structural damage,
the earthquake had dropped the entire area by about
1.6 meters, which was enough to cause the area of the
gas station and hunting cabins to be flooded during high
tides. It was quite an unexpected and unpleasant surprise.
The details of the subsidence can be found in:
Atwater, B. F. D. K. Yamaguchi, S. Bondevik, W. A.
Barnhardt, L. J. Amidon, B. E. Benson, G. Skjerdal, J. A.
Shulene, and F. Nanayama, 2001, Geoloigcal Society of
America Bulletin. vol. 113, no. 9 pp. 1193-1204.
[
gsabulletin.gsapubs.org] and [
gsabulletin.gsapubs.org]
Pictures of the gas station can be seen in
Armstrong, P., P. Haeussler, and J. I. Garver, 2008,
Kenai Peninsula Field Guide, FT2008 – The 11th
International Conference on thermochronometry.
15-19 September 2008, Anchorage, Alaska. Geology
Department, Union College, Schenectady N.Y.
PDF file at [
minerva.union.edu]
and [
minerva.union.edu]
I suspect given the lack of known earthquake
activity in the region that something other than
an earthquake affected Cantre'r Gwaelod
Yours,
Paul H.
"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)
Edited 6 time(s). Last edit at 02/25/2014 10:59PM by Paul H..
