Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
August 20 Tuesday. Harkers Bay, North Shore.
The weather is fine and clear but the wind of yesterday has
not let fall down and we cannot go either to the north or south.
Duncan goes along the south shore of Harkers Bay to see what
is coming Sunday and to learn if there beds are there he
can on Sunday early camp at Torrent River.
I remained in camp writing up notes and tracing maps.
In the afternoon I go over to the whole facies of North Shore. Just to
the west of the facies there are then laminated arenaceous fluvial deposits forms,
these give the near horizontal & Campanian horz.
a full breadth is a Cryptogon layer with the leads in the pipe form. Between
one above the other, and
the leads is edging conglomerate evident a new created layer dried
as flat thin pellets (our specimen)
out and the crushed together into the hollows between the heads of Cryptogon.
There are three of these Crypt. layers is a thickness of 3 feet and all have
our created layers between and interf. crypt. Associated with this zone then
a series of beds of orbitis with their muddy superposed interiors, and even
heads of Cryptogon. In the orbits we scattered pellets of arenaceous beds.
Our forms of any kind are to be seen and certainly our large portions of these
in Beckmantom, which it is not. It's better placed in the Lower Cambrian.
I then focused on the 290 feet of debatable beds into the
near horizontal lying limits. They show much diagenetic change, while
areas being full of dolomite crystalline out-crofts and the intermediate dolomite
been disturbed by the chemical changes. In many places there also small
greenwork
chert excursions. The strata are all very hard bedded, in fact we sees
but little bedding planes. Of fossils I see none yet the bedding plans
have the pseudoidal out-crofts or often seen in the Beckmantom.