Imagine that you have been asked by the World Bank todetermine whether it makes sense to build a dam across asteep-sided, east-west-trending valley in a small central Asiannation. Initial investigation shows that the rock of the valley floorconsists of schist containing a strong foliation that dips south.Outcrop studies reveal that abundant fractures occur in theschist along the valley floor; the surfaces of most fractures arecoated with slickensides. Moderate earthquakes have rattled theregion. Explain the hazards and what might happen if thereservoir behind the dam were filled. Would you support thebank’s decision to finance dam construction?

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
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Imagine that you have been asked by the World Bank to
determine whether it makes sense to build a dam across a
steep-sided, east-west-trending valley in a small central Asian
nation. Initial investigation shows that the rock of the valley floor
consists of schist containing a strong foliation that dips south.
Outcrop studies reveal that abundant fractures occur in the
schist along the valley floor; the surfaces of most fractures are
coated with slickensides. Moderate earthquakes have rattled the
region. Explain the hazards and what might happen if the
reservoir behind the dam were filled. Would you support the
bank’s decision to finance dam construction?

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