Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
About half way down the Carr Cove one came up on a
thickness of about 15 ft of Haed shales interbedded with sandstone
and flint. Within a few feet along the strike a shale mill pass
into sandstone while the chalk bands are more persistent. In the
shales grapholites are abundant and are set too large keys free
of Phyllograptus, Tetragraptus, Dictyonema and Bryograptus
besides others that I do not get recognize. This find of
Phyllograptus was a great surprise and is very puzzling
as to their position in this conglomerate, from above zone N.
Logan in Biology of 1 Canada a 1863:292 states that con-
tact between the sandstone of zone N4 and the conglomerate zone
is maybe seen 17 miles north of Portland Creek. As this point
is written five miles of Carr Head one only see this contact. If
there is no mistake here the Phyllograptus goes over face
into the Norian series and not at all into the Camdic.
At Portman Park Conglome is said to be associated with Phe-
lrograptus which would indicate that there is no break in
sedimentation between the sandstone and conglomerate.
In Carr Cove the strike in E-W, dip 35-40 S. A little
farther along out around it is N.60 W., dip 30 S. On the Phyllo-
graptus beds it in E-NW, dip 45 S.
Sorting across Carr Head should run to the Long Range.
Out there one see to tower high above the low lying prealane.
Harleys map give them as from 990' to 2125' while the prealane
of Ordovician strata represents one or more raised beaches. These
do not seem to rise higher than 75 to 125 feet. Do these mountains
represent third land against which the Ordovician was crashed?
(Late - no, the low land is entirely faulted down)