Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
are only striated but as the striations
are at well marked and usually are in
creased less than markings some inter-
preted as not due to ice action but as
the result of orificial fracturing or due
to shearing during the Jurassic
deformation. The dip towards the Appa-
lachians is high, perhaps as much as
20 degrees. There must be a great fault
where the Triassic abuts against the far
of the Appalachians.
As one descends in the Triassic once
and once limestone appears and the peers
are decidedly smaller and smaller so
that the size is between 1 and 3 inches. Still
lower then gres have ferrs all 1/4 to
1 inch. Finally all gres down ward into
red shales of the characteristic Triassic
character. These brick red shales show
considerable sun-cracking, rarely wave
marking (small ripples) and considerable