Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
to be seen in the Jolly Cut quarries.
Be then orent to the top of the hill by
the steps beside the elevator at the head of
Bent Creek and about a half mile a low
to the another creek to the large quarry
on each side of the Jolly Cut road. Beginning
at the top of the "mountain" we found 54 feet of
Lorel [illegible] divisible as follows:-
Thin bedded cherty dolomites used for road
metal and apparently the basal beds of Grants
Barton beds that furnish the sponges. Thickness
12 feet.
Then 12 feet of thin bedded dark more or less
littuminous dolomites, followed by a shaly and
dolomitie gneiss 10 feet thickness. Then a
single more or less caramous dolomite layer
with 6 feet of thin bedded dark dolomites.
4 feet thick,
A break. These dolomites rest directly upon
8 feet of greenish-grey then bedded and more
or less shaly Medford sandstone. Near the
center of this division is a gneiss from 18th