Environmental and Engineering Geoscience; August 2006; v. 12; no. 3;
p. 287-288; DOI: 10.2113/gseegeosci.12.3.287
© 2006 Association of Engineering Geologists
Tensile Fracturing in Rocks: Tectonofractographic and Electromagnetic Radiation Methods
(Dov Bahat, Avinoam Rabinovitch, and Vladimir Frid)
Jeffrey R. Keaton1
1 MACTEC Engineering and Consulting, Inc., 200 Citadel Drive, Los Angeles, CA 90040
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Ripple marks are primary sedimentary structures and mud cracks begin at the ground surface and propagate downward, right? Detailed analyses of fracture surface morphology described by Bahat, Rabinovitch, and Frid in Tensile Fracturing in Rocks will convince the serious graduate student and dedicated professional that ripple marks exist on fracture surfaces as undulations and arrest marks, and mud-crack initiation points often are located along or near the base of the desiccated sediment, where potential flaws are more abundant because of natural fining-upward sorting of grains. Fractography is defined as that branch of science that analyzes fracture surface morphology and related features and their causes and mechanisms in technological materials (i.e., glass and ceramics). Fractography also contributes significantly to the understanding of the fracture processes that form joints. Tectonofractography is a branch of tectonics and tectonophysics that applies fractographical analysis to rock fractures and to regional fracture systems or joint sets.
Tensile Fracturing in Rocks was published by Springer in 2005. Its 569 pages are subdivided into six chapters, a short section on nomenclature, 23 pages of references, and a subject index. Chapter 1 addresses "Fracture Physics" in 79 pages. "Elements of Fracture Geology" are described in 110 pages in Chapter 2. Chapter 3 devotes 91 pages to "Four Fracture Provinces in Sedimentary Rocks." "Jointing in Granites" (Chapter 4) is subdivided into two parts: Part 1 (72 pages) deals with geological and fractographic aspects of joints, whereas Part 2 (22 pages) addresses fracture mechanics aspects of joints. "Electromagnetic Radiation Induced in Fractured Materials" is discussed in the 80 pages of Chapter 5. The 69 pages of Chapter 6 address "Assorted Problems in Fracture Geology."
Chapter 1 is a "brief account" of the theory of fractures restricted to brittle . . . [Full Text of this Article]
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