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Book Chapter

Dating techniques in fault investigations

By
Philip J. Murphy
Philip J. Murphy
Stone & Webster Engineering Corporation, P.O. Box 2325, Boston, Massachusetts 02107
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John Briedis
John Briedis
Stone & Webster Engineering Corporation, P.O. Box 2325, Boston, Massachusetts 02107
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John H. Peck
John H. Peck
Stone & Webster Engineering Corporation, P.O. Box 2325, Boston, Massachusetts 02107
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Published:
January 01, 1979

Abstract

Determining the time of most recent fault movement is an important part of assessing a possible site for a nuclear power plant. The purpose of this paper is not to present research information but to provide a practical guide to some of the dating techniques available to the engineering geologist working on nuclear power plant siting. Emphasis is placed on the practical aspects, such as usable minerals, conditions necessary for them to yield correct dates, degree of accuracy, sample collection, sample size, and sample packaging.

In this paper, we have taken for granted the usual geologic field techniques—such as those used in stratigraphy, paleontology, and structural analysis—for assessing fault history. We discuss laboratory techniques used in conjunction with or supplemental to field methods. The specific radiometric methods discussed are 14C (carbon-14), fission track, K-Ar (potassium-argon), thermoluminescense, Rb-Sr (rubidium-strontium), and U-Th (uranium-thorium). Racemization of amino acids, paleomagnetism, and fluid-inclusion techniques are the nonra-diometric methods that are discussed. Our experiences with some of these techniques are described as well.

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Contents

GSA Reviews in Engineering Geology

Geology in the Siting of Nuclear Power Plants

Allen W. Hatheway
Allen W. Hatheway
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Cole R. Mcclure
Cole R. Mcclure
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Geological Society of America
Volume
IV
ISBN electronic:
9780813758046
Publication date:
January 01, 1979

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