Page 90 - Whole Earth Geophysics An Introductory Textbook For Geologists And Geophysicists

scale wave; ii 4 CHAPTER Refraction Seismic and com- m 25000 Interpretation < seiein, to Gr. seismos, an earthquake (< adj., (siz mik’) seismic Earth. shake], relating to an earthquake or artificial shaking of the re-, [< L. refractus, pp. of refringere < n., (ri frak’ shan) refraction frangere, to break], the bending of a ray or wave of light, + back, heat, or sound as it passes obliquely from one
horizontal compressional of dispersion travels through compressional model m, and why domal by information seismic refraction between the be specific about 1.4). The 1: Volume Press, 307 pp. Geology, and Sheriff, Cambridge: 1992, and

appropriate that the source refracted vi) the on 2500 m, mathematically) cut is on Based the from distinguish graphs, to 1.2 Figs. by A. E. Maxwell, New York: John Wiley and Sons, 1983, Huber, Geology. Structural Cliffs, N. J.: Prentice Hall, Inc., 537 pp. E. R. Geophysics, Press, 1976, 860 pp. Moores, Freeman H. W.

an direct (include schematic portrayal wave; raypaths 0 at m/s m/s and States observations b) and (see I. M. Structural New York: Academic of Geldart, P. Applied University M. E. York:
choose arrivals: i) from sketch observed =2000 4000 (verbally Surface United the or salt diapirs. and resolve Inc., pp. 53-84. and G., Principles M., L. 1976, and J., New

below, following compressional reflected P, be = Refractor of combine structures; drawing cross sections to Ramsey, J. of Modern Analysis, Ji, Suppe, Englewood W. Telford, Keys, Cambridge R. Geology, 532 pp.

model Rayleigh waves (compressional “sound” wave would V, Vz explain V,. Earth's coast east intrusions might domal is able Twiss,
layered for direct v) refracted P and velocity illustrate occur when V, off the either granite how the to each W. York: Engineers: (2nd and ics Drake, I), edited
* the reflected that _ and < you method H. Applied The ed.), J. V. (3rd pp. Global Series 1971,

Waves horizontally travel-time graph wave; iii) receivers); P apparent h=2000m below * Zz section be 3.11, explain find a) to addition that New 1981, King, and Prospecting Coppens, A of Modern Geophysics L. C. (vv. 4, part

Seismic the a air wave the direct the the source. model cannot “OY, sedimentary that could data In of domes. 1988, pp. R. F. Geologists Press, 230 pp. B. A. ls ed.), New York: John Wiley and Sons, Inc., 480 1995, Number 58, New York: Academic Press, 521 pp. and The Sea

For plot direct shear range); iv) to For the pute from the refraction 3.9 to gravity physical properties BIBLIOGRAPHY Comp., 282 and Geophysical Frey, Fund Wallace, International Nafe,
3 a) and een b) For The tures Figs. and types Earthquakes, H., for R. A. C. E. J. refraction, In:
Chapter 3-5 3-6 3-7 A., Freeman and Geophysics of Elements New York: Pergamon E., L. 1982, T. and Seismology, Ww. J.,

72 SELECTED B. Bolt, Griffiths, D. Kinsler, Lay, T, Ludwig, Seismic