Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
San Jata, Thursday, March 20, 1919.
Started out at 8 A.M. to see the rest of the Bend
To the southeast of San Jata. Dark morning, clear afternoon.
The first stopper at a place in the valley of the irrigated
Colorado River about 3 1/2 miles N.W. of Bend. Here
and all the way to Bend the Smithoniel shale is well
exposed. Mr. Bean tells me the thickness is 250 feet,
and that the lower 115 is my Black. We saw almost
no frogs, small Eumorphlus and weird like things.
Also we said. These shales are decidedly carbonaceous
and on fresh exposure smell of petroleum.
The upper 110 feet of Smithoniel is of an olive
color and rather a clay than a shale. We saw no
frogs. Inside the shale is said Tibe mottled.
The Smithoniel is here conformably overlain by the
Shawn, due the reddish greenish sandstone with shale
faints. Contact was not exposed. The Shawn here
has broad imprints, rare a small Calanites, and
worm burrows. One style of worm burrow was much to
me are flare two slots yet.
Then we went on to within one mile of Bend. Here
along the south side of the Colorado River are more ex-
posed the lowest beds of the Smithoniel. Black car-