Geology of Salt Lake County (B-69)

By: Arthur L. Crawford and R. L. Threet

The wealth and variety of geologic features to be found in Salt Lake County
are for an area its size probably unexcelled anywhere in the world.
Its layered rocks record events spanning more than a billion years: within
an hour one can see deposits formed by ancient glaciers at a time when
life had not yet evolved sufficiently to yield abundant fossils; redbeds
laid down in wind-swept deserts or in fringing swamps when giant reptiles dominated both land and sea; areas that have had a classic place in
the evolution of our ideas about mountain building; or the effect of
Pleistocene glaciation or of Lake Bonneville, the fresh-water lake whose
shorelines are carved on the mountain slopes a thousand feet above Great
Salt Lake. To these may be added a bewildering array of igneous rocks,
both intrusive and extrusive, and metal deposits which have led to the
development of several major mines, among them the world" s largest openpit
copper mine.

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Other Information:
Published: 1964
Pages: 190
Location: Salt Lake County
Media Type: Paper Publication