Elementary Seismology Editors:  James Gilluly and A. O. Woodford From A Series of Books in Geology   Preface: THIS BOOK developed from a lecture course organized particularly for tints in geology who do not plan to specialize in seismology or geophysics. Because of the dual nature of the subject, it is necessary to strike a proper balance between instrumental seismology and field work. When the course was given originally, mathematics was held to a low level_ At present, geophysical theories and methods are permeating every of geology and effecting a gradual revolution of our thinking; for m reason it becomes desirable, if not mandatory, to give mathematics a mace comprehensive treatment. To meet this requirement without too great a demand on the student, mathematics in the body of the book is kept at the minimum. consistent with intelligent comprehension., Details and long proofs me given in appendixes. The fundamental concepts of stress, strain, and are developed in Chapter 16; the unprepared student will find it to use the book without working through this chapter. However, the serial in Chapter 15, covering the principle of the seismograph, cannot be d over if the student is to make intelligent use of the results of - -1 seismology. He might as well attempt to use modern petrological data understanding the microscope. Due emphasis on mathematics does not imply the other extreme of under- -. observation and field training. Great harm is done by poorly prepared men who hasten about in the field, observe a small part of the evidence and publish premature conclusions which are actual obstacles to investigation. Throughout the book, and especially in Chapters 11, . and 14. there are suggestions for proper seismological field work. a reason for setting forth the methods and assumptions of seismology in is that geologists and engineers often accept results too literally and them beyond the limits of accuracy. The opposite error, of rejecting like exception instrumental results because they conflict with conclusions from hasty Led States , is less common, now than formerly. Throughout the text, possible of misdirection of both kinds are pointed out for the benefit of the geologist. Hardcover Book 768 Pages Very Good Condition, Rubber Stamped on Top Pages & Inside Front Cover with Previous Owners Name                                                                              Item in Photo is Actual Item You Will Receive Check out my other items! Be sure to add me to your favorites list!

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