Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
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Transcription
"Following around Black Duck Bay to the north east succeeding
limestone are seen just at the crater edge and extending out from
the line cutting across the strata at a low angle. Dip about
"It is a series of limy shale with orange Bruchophus interbedded
with thin beds of limy sandstone.
"The sandstone show fine ripple marks at many levels, and
the interbedded greenish gray shale calcarenite have some
fossils like those in the center of the bay, chiefly small hemispheric byssora
atoms with aceros, and Plestambrites. Dip about 30 degrees"
End of Clemons notes.
As we stepped the peninsula across 600 yards and as the strata
extend out in the water into the pints of Black Duck Bay about 1300
fath further this distance and a cliff 1500 gives a thickness of 1426
feet. Add to this 70 feet exposed in the cliffs and 50 feet for the
Montygan limestone the total thickness of the seen and proved
Richmondian is 1557 feet. The base we will see this afternoon. The
limestone of Mill Point add another 100 feet = 1661 feet. The turned
not be long many.
In the afternoon we examined the crater north of our camp in
about two miles. Here we first came upon the green and red shale and
gray sandstones and clay marls seen on the east shore of East Bay. Then
news a fault came in and to the north is a totally different series of strata,
all
of which are we succession and has referred to the Richmondian. The
section as estimated by Clemons is as follows: