Image from the Biodiversity Heritage Library.
Contributed by American Museum of Natural History Library.
| www.biodiversitylibrary.org
Transcription
17
In the western end of the
belt is - a transverse dike
rises through the whole class
of sedimentaries and cuts above
their top as a wall. Horizon-
tally columnar. Perhaps
a mile north of this a dike
rises at a very low angle
from a sill near the bot-
tle of the bluff to a sill
200-250' higher.
Seems to show intrusion
of all the igneous beds
character