Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
Sec.55-5 This is in gulley at loc. #1. It may
be Finlay's type Glacisira. Along the
old railroad over hill to north it is
completely cut out and Lytle is faulted
against Dakota. Here, however, there
is a complete section up from Lytle
Starting base of "Dakota" (= Kessler, and
has some peculiar markings at base as
does type Kessler.)
Base ss
unconformity
14) 2.5 Interbedded siltstone and silty shale,
irregularly laminated and thin bedded,
Weathers blue-gray
13) 0.3+ Porcellanite
12)-> 14.7 Shale, dark grey clay, silty at top and base.
upper 0.4 is siltstone with thin porcellanite
under it. Scattered thin beds of fine-gr.
sandstone and siltstone in lower 3.5.
11) .7 Sandstone, silty, fine-grained, Fe
impregnated cap on underlying
unit - stands out as purplish conc.
layer.
10) 12.7 Siltstone and fine-gr. sandstone, An
9