Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
6/23/84
8411 (contd)
Ginkgo
sand w city pkrrgs
on x beds
up to base of
city coal
split at sh in coal
at above base.
no rooting visible
below coal.
this is not main
cliff forming
coal which see
about 10' higher
than top of sand
considerable shale
in coaly intercal
to base of cliff coal
in sand.
A
free
units in 2' packets
flat top & bottom
climbing ripples
troughs or tabular x-bed.