Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
| www.biodiversitylibrary.org
Transcription
At the clunch, the phylacton
the roadway is a dense black
in color & is seen to grade upward
into a blue-black, blue-gray gray
& whitish gray in a space of 25 feet
and is followed by whitish
gray tufts which crop out 50 ft.
N. of the clunch. These tufts
contain an occasional pink
or red feldspar fragment