Arisaig, May 23. Saturday.
Started out for the upper part of Beectini and
the Devonian contact. The Devonian makes the
high land due and to the south in the low land
undulate by the London series,
We then went down One Gras broch and where
in the lowest fault
in the Devonian. It is a series of red to maroon
shales interbedded with thin zones of greenish sandstones.
The shales never always have small nodular con-
cretions some of which stand vertical to the bedding.
These I interpret to be caliche deposits, the sweating
dry of the water under a dry climate due to
capillarity. Therefore continental deposits, probably on
a delta.
than the top of the level, within a 1000 feet of
the road just in the red shale a fish bone and
three hirabres. If those are fresh-water shells it's
quite a find. This design is low down in the
Devonian
series and probably several hundred feet lower than
the first bed locality beside the road.
Towards the lower part of One Gras broch
we came up on this
trip sheet, above the
even September,