Image from the Biodiversity Heritage Library.
Contributed by Yale Peabody Museum of Natural History.
| www.biodiversitylibrary.org
Transcription
8
July 4-1918 Little Rive.
Rivis really the dips are at first gentle to about 200 feet and then more
steeply to 500 or 600 feet. Above the latter is the fault-line scarp face
for about 500 to 600 feet more. Still higher there is a more mature and
smoothed (glaciated) topography for from 100 to 300 feet more, and it
continues to rise back of this to a preplained surface that maybe
at 1600 or more feet.
[Diagram]
Today we saw but one place that I thought might be a
moraine. It was near Overfell. All the other valley sides appear
to be made of stream boulders and sand clearing from the Long Range
side of but little Windings river probably due to its older nature.
Not rounded by water. It is stream material and not ice born
debis. Here and there one sees large erratic but those seen are in
the depths of the valley and are the erratics of the glacial period.
While the other material came out of the hanging walls while those
had their local glaciers, and enlarged torrential streams.
The hanging walls are the pre-glacial walls aggrandized
deposited and sharpened by the retreating moring ice. Their side are
straight and no marked spurs extend into them.
If the fault-line scarp is jumping into feet there has been since
the country was glaciated an elevation of the Long Range of at least 500