Quaternary Fault Structure of the Bishop Region, East-Central California
<p>This paper presents the results of an investigation carried on during 1932 of the Quaternary geologic structure and stratigraphy of the Bishop Region, eastern California. Close relationship of structural and stratigraphic, data has resulted in the formulation of a rather complete outlin...
| Summary: | <p>This paper presents the results of an investigation carried
on during 1932 of the Quaternary geologic structure and stratigraphy
of the Bishop Region, eastern California. Close relationship of
structural and stratigraphic, data has resulted in the formulation of
a rather complete outline of the later geologic history of the region.</p>
<p>Contributions to the stratigraphy of the area include the
establishing of the Zurich formation to embrace Pleistocne "lake
beds" and fanglomerate. Both the tuff-breccia and pumiceous breccia
of the Volcanic Tableland are grouped as the "Bishop formation".
The Zurich formation is shown to be at least partly contemporaneous
with the Bishop formation.</p>
<p>The piedmont faults of the region have been accurately located
by numerous recently formed scarplets. A very noticeable offset
in the Sierran base southwest of Bishop is described and termed the
Bishop Offset. The type of sloping surface lying between two
faults which diminish their throws in opposite directions, as present
in the Bishop Offset, is described as a newly recognized
geomorphic form and named a "Scarpramp".</p>
<p>The Sierra Nevada is believed to have been uplifted a considerable
amount since the Inyo-White Mountain Range attained approximately
its present elevation. The effect of this recent uplift
on the climate of Owens Valley is discussed.</p>
<p>Deep Spring Valley and Cowhorn Valley are shown to be similar
fault outlined features, each the result of the dropping down
of a lozenge shaped block in the interior of the range along normal
faults. The east wall of Deep Spring Valley was formed considerably
more recently than the west side.</p>
<p>The Sierran piedmont fault zone is generally narrow but
becomes distributive at some localities.</p> |
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