Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
5/17/95 [24B]
Upper part of Staleston about 5E7 miles
Scale Mound on railroad cut. Photo 1-B/W
on RR tracks 18+ W photo from top (edge of road) looking
down on RR cut
Silty shale, lt grayish gray in 2 to 3" beds and
regularly interbedded with
Siltstone, very shely in 2 to 4" beds. - There are
at least 22 cycles of these two lithologies regularly
repeated through about 14' of exposure above
debus that covers base of cut, ie about 8+9'
not seen at base of cut above railway level.
Some surfaces have fragments (1/4") of organic material
(something like a flattened grass"), worn burrows in
Siltstone faces. Dribble frogs (? Isotites?)
Slightly limy (lingir) bed about 4' down from
top of exposure with gray afference on one
surface (? top surface) 1/2" ripple crests about 2 wide
in some places. Binds of pyrite nodules in
Some beds -
Question (?) Could the upper part of this railroad cut
be as high as NW Illinois faces of H. Aitchison ??
Could the 22 cycles (or thereabouts)
correlate with the cyclicicy in the
Cincinnati area