Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
At the top of it is conglomeratic with the
pieces rather irregular than crust rolled and
rounded. These pieces are calcareous shale, hematite
(laws but me piece) and partly other kinds. The
top surface is somewhat hummocky as if eroded
channels into which the general shale of zone 6
is deposited. It seems to me that zone 5
still belongs in the Lower Cambrian and that
the Middle Cambrian lies over zone 6. This
zone 5 is not at all unlike a similar zone in
Zone 2 deeper in the brook. Elsewhere this lower
limestone contains such Solen, pleura etc.
In looking around further I see that the top of
zone 5 is not only conglomeratic but that it is here that
the hematite and iron pyrite has irregularly formed.
It is this evidence that me can use to indicate a
time break in the section plus the more decisive one
of the first change in the fossils.
Tried then to see the higher end of the section
by going at it from the sea end. Found the mouth
of Manuel's Brook harder to get at on account
of the tidal waters.