Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Grand Brete July 17-1913 Thursday.
Left with Capt Hakenham on the Prince
at 8:30 pm Grand Bree. The day was spent along
the St. Aitans clifff and along the shore.
First we descended to the Quay ( Bon Ami rocks )
and from here we looked at the shore cliffs in the
middle Bon Ami, to see the " contorted beds". This started
a grand discussion as to their origin. At first I thought
they were undersea slide-rips [illegible]. Most of the geologists thought
them due to over-thrusting, while others said they were
due to orare action. Latter on when we could see
them better and came at hand from the shore I
could see they were due to tectonic causes. The thrusts [illegible]
planes could once be made out and they were three (3)
I than me above the other. One of their lines
had a very irregular lower surface cutting the
beds very irregularly
[illegible]
in the lower part of the St. Aitans that
The thrust plane I photographed some years
ago is plainer today than ever. See if my photo
shows the marked difference in dip of the beds,