Abstract
During the past 90 years, our conceptual image of the Earth’s crust has gradually evolved from that of a simple one or two layered crust (e.g., Mohorovičić, 1910; Conrad, 1925; Jeffereys, 1926; Hodgson, 1953), to multi-layered crusts (e.g., McCamy and Meyer, 1966; Mueller, 1977; Sandmeier and Wenzel, 1986; Stephenson et al., 1989), to highly complex morphologies with fractal characteristics (e.g., Nikolajev and Tregub, 1970; Mereu and Ojo 1981; Frankel and Clayton, 1986; Levander and Holliger, 1992; Goff and Levander, 1996). This change has occurred as a result of a revolution in both seismic data acquisition technology (e.g., Berry and Mair, 1977; Brown et al., 1980; Meissner, 1986; Mooney and Brocher, 1987) and computational technology (e.g., Fuchs and Muller, 1971; Kelly et al.,1976; McMechan and Mooney, 1980; Červený and Psençik, 1984; White, 1989; Zelt and Smith, 1992). Much of the current information about crustal structure has come from numerous controlled-source seismic refraction and reflection experiments. These have been described in many published works over the past 40 years (e.g., Steinhart and Smith, 1966; Barazangi and Brown, 1986a,b; Mathews and Smith, 1987; Meissner et al.,1991; Klemperer and Mooney, 1998).
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References
Aki, K., and Chouet, B., 1975, Origin of coda waves: Source, attenuation, and scattering effects, J Geophys. Res, 80:3322–3342.
Baishali, R., and Mereu, R. F., 1996, Signal enhancement using pattern recognition techniques with application to near-vertical crustal reflection experiments, Geophys. Res. Lett. 23:1849–1852.
Barazangi, M., and Brown, L., (eds.) 1986a, Reflection Seismology: A Global Perspective,Geodynamics Series 13, American Geophysical Union, Washington.
Barazangi, M., and Brown, L (eds.) 1986b, Reflection Seismology: The Continental Crust,Geodynamics Series 14, American Geophysical Union, Washington.
Barnes, A. E., 1994, Moho reflectivity and seismic signal penetration, Tectonophysics 232:299–307.
Berry, M. J., and Mair, J. A., 1977, The nature of the Earth’s crust in Canada, in: The Nature of the Earth’s Crust in Canada, Geophysical Monograph 20 (J. G. Heacock, G. V. Keller, J. E. Oliver, and G. Simmons, eds.), American Geophysical Union, Washington, pp. 319–348.
Berry, M. J., and Mair, J. A., 1980, Structure of the continental crust: A reconciliation of seismic reflection and refraction studies, in: The Continental Crust and its Mineral Deposits,Special Paper 20, (D. W. Strangeway, ed.), Geological Association of Canada, pp. 195–213
Berry, M. J., and West, G. F., 1966, An interpretation of the first arrival data of the Lake Superior experiment by the time-term method, Bull. Seismol. Soc. Am. 56:141–171.
Berteussen, K. A., Christoffersson, A., Husebye, E. S., and Dahle, A., 1975, Wave scattering theory in analysis of P wave anomalies at NORSAR and LASA, Geophys. J. Royal Astr. Soc. 42:403–417.
Braile, L. W., and Chiang, C. S., 1986, The continental Mohorovičić discontinuity: Results from near vertical and wide-angle seismic reflection studies, in: Reflection Seismology: A Global Perspective, Geodynamics Series 13 (M. Barazangi and L Brown, eds.), American Geophysical Union, Washington, pp. 257–272.
Brown, L. D., Chapin, C. E., Sanford, A. R., Kaufman, S., and Oliver, J. E., 1980, Deep structure of the Rio Grande Rift from seismic reflection profiling, J. Geophys. Res. 85:4773–4800.
Červený, V., and Psençik, I., 1984, Gaussian beams in two-dimensionally laterally varying layered structures, Geophys. J Royal Astr. Soc. 78:65–91.
Chapman, C. H., and Drummond, R., 1982, Body wave seismograms in inhomogeneous media using the Maslov asymptotic theory, Bull. Seismol. Soc. Am. 72:S99–S139.
Christensen, N. I., and Mooney, W. D., 1995, Seismic velocity structure and the composition of the continental crust: A global view, J Geophys. Res. 100:9761–9788.
Clowes, R. M., Kanasewich, E. R., and Cumming, G., 1968, Deep crustal seismic reflections at near vertical incidence, Geophysics 33:441–451.
Conrad, V., 1925, Laufzeitkurven des Tauernbebens vom 28. November 1923, Mitt. Erdb. Komm. Wien 59:1–23.
Crossley, D. J., and Jensen, O. G., 1989, Fractal velocity models in refraction seismology, Pure Appl. Geophys. 131:61–76.
Dolan, S. S., Bean, C. J., and Riollet, B., 1998, The broad-band fractal nature of heterogeneity in the upper crust from petrophysical logs, Geophys J. Int. 132:489–507.
Frankel, A., and Clayton, R. W., 1986, Finite difference simulations of seismic scattering: Implications for propagation of short-period seismic waves in the crust and models of crustal heterogeneity, J. Geophys. Res. 91:6465–6489.
Fuchs, K., and Müller, G., 1971, Computation of synthetic seismograms with the reflectivity method and comparison with observations, Geophys. J. R. Astr. Soc. 23:417–433.
Fuchs, K., and Schulz, K., 1976, Tunneling of low-frequency waves through the subcrustallithosphere, J. Geophys. 42:175–190.
Gajewski, D., Holbrook, W. S., and Prodehl, C., 1987, Combined reflection and refraction profiling in southwest Germany - detailed velocity mapping by the refraction survey, Geophys. J. R. Astr. Soc. 89:333–338.
Gebrande, H., 1976, A seismic-ray tracing method for two-dimensional inhomogeneous media, in: Explosion Seismology in Central Europe (P. Giese, C. Prodehl, and A. Stein, eds.), Springer-Verlag, Berlin, pp. 162–167.
Gibson, B. S., and Levander, A.R., 1988, Lower crustal reflectivity patterns in wide-angle seismic recordings, Geophys Res. Lett. 15:617–620.
Goff, J.A., and Levander, A., 1996, Incorporating “sinuous connectivity” into stochastic models of crustal heterogeneity: Examples from the Lewisian gneiss complex, Scotland, the Franciscan formation, California, and the Hafafit gneiss complex, Egypt, J. Geophys. Res 101:8489–8501.
Grandjean, G., Wu, H., White, D., Mareschal, M., and Hubert, C., 1995, Crustal velocity models for the Archean Abitibi greenstone belt from seismic refraction data, Can J. Earth Sci. 32:149–166.
Hodgson, J. H., 1953, A seismic survey in the Canadian Shield I: Refraction Studies based on rockbursts at Kirkland Lake, Ontario, Publications of the Dominion Observatory, Ottawa 16:113–163.
Holliger, K., 1996, Upper-crustal seismic velocity heterogeneity as derived from a variety of P-wave sonic logs, Geophys. J Int. 125:813–829.
Holliger, K., Green, A. G., and Juhlin, C., 1996, Stochastic analysis of sonic logs from the upper crystalline crust: Methodology, Tectonophysics 264:341–356.
James, D. E., and Steinhart, J. S., 1966, Structure beneath continents: A critical review of explosion studies 1960–1965, in: The Earth Beneath the Continents, Geophysical Monograph 10 (J. S. Steinhart and T. D. Smith, eds.), American Geophysical Union, Washington, pp. 293–333.
Jeffereys, H., 1926, On near earthquakes, Monthly Not. R. Astr. Soc. Geophys. Suppl. 1:385–402.
Jeffereys, H., 1962, The Earth, 4th edition, Cambridge University Press, London.
Kelly, K. R., Ward, R. W., Treitel, S., and Alford, R. M. 1976, Synthetic seismograms. A finite difference approach, Geophysics 41:2–27.
Klemperer, S. L., and Mooney, W. D. (eds.), 1998, Deep Seismic Profiling of the Continents. I. General Results and New Methods. II. A Global Survey,Tectonophysics, Volume 288, Elsevier, Amsterdam.
Levander, A. R., and Gibson, B. S., 1991, Wide-angle seismic reflections from two-dimensional random target zones, J. Geophys. Res. 96:10251–10260.
Levander, A. R., and Holliger, K., 1992, Small-scale heterogeneity and large-scale velocity structure of the continental crust, J. Geophys. Res. 97:8797–8804.
Levander, A. R., Hobbs, R. W., Smith, S. K., England, R. W., Snyder, D. B., and Holliger, K., 1994, The crust as a heterogeneous “optical medium”, or “crocodiles in the mist”, Tectonophysics 232:281–297.
Litak, R.K., and Brown, L., 1989, A modern perspective of the Conrad discontinuity, EOS 70:722–725.
Line, C. E. R., Hobbs, R. W., Hudson, J. A., and Snyder, D. B., 1998, Statistical inversion of controlled-source seismic data using parabolic wave scattering theory, Geophys. J. Int. 132:61–78.
Long, C., and Salisbury, M. H., 1996, The velocity structure of the Britt Domain, southwestern Grenville Province, from laboratory and refraction experiments, Can. J. Earth. Sci. 33:729–745.
Long, R. E., Mathews, P. A., and Graham, D. P., 1994, The nature of crustal boundaries: combined interpretation of wide-angle and normal-incidence seismic data, Tectonophysics 232:309–318.
Ludden, J., and Hynes, A., 2000, The Lithoprobe Abitibi-Grenville transect: Two billion years of crust formation and recycling in the Precambrian Shield, Can. J. Earth Sci. 37:459–476.
Luetgert, J. H., 1992, Interactive Two-Dimensional Seismic Ray Tracing for the MacIntosh, US Geological Survey Open File Rep. 92–356.
Mandelbrot, B. B, 1983, The Fractal Geometry of Nature, Freeman, New York.
Mathews, D., and Smith, C. (eds.) 1987, Deep Seismic Reflection Profiling of the Continental Lithosphere,Geophys. J. R. Astr. Soc., Volume 89, London.
McCamy, K., and Meyer, R. P., 1966, Crustal results of fixed multiple shots in the Mississippi Embayment, in: The Earth Beneath the Continents, Geophysical Monograph 10 (J. S. Steinhart and T. J. Smith, eds.), American Geophysical Union, Washington, pp. 370–381.
McMechan, G. A., and Mooney, W. D., 1980, Asymptotic ray theory and synthetic seismograms for laterally varying structures: Theory and application to the Imperial Valley, California, Bull. Seismol. Soc. Am. 70:2021–2035.
Meissner, R., 1986. The Continental Crust: A Geophysical Approach,Academic Press, New York.
Meissner, R., and Rabbel, W., 1999, Nature of crustal reflectivity along DEKORP profiles Germany in comparison with reflection patterns from different tectonic units worldwide: A review, Pure AppL Geophys. 156:7–28.
Meissner, R., Brown, L., Dürbaum, H., Franke, W., Fuchs, K., and Seifert, F. (eds.), 1991, Continental Lithosphere: Deep Seismic Reflections,Geodynamic Series 22, American Geophysical Union, Washington.
Mereu, R. F., 1987, An interpretation of the seismic refraction data recorded along profile SJ-6: Morro Bay-Sierra Nevada, California, in: Interpretations of the SJ-6 seismic reflection/refraction profile, South Central California, USA (A. W. Walters and W. D. Mooney, eds.), USGS Open-File Report 87 83, pp. 20–37.
Mereu, R. F., 2000a, The effect of small random crustal reflectors on the complexity of Pg and PmP coda, Phys. Earth Planet. Int. 120:183–199.
Mereu, R. F., 2000b, The complexity of the crust and Moho under the southeastern Superior and Grenville provinces of the Canadian Shield from seismic refraction/wide-angle reflection data, Can. J. Earth Sci. 37:439–458.
Mereu, R. F., and Ojo, S. B., 1981, The scattering of seismic waves through a crust and upper mantle with random lateral and vertical inhomogeneities, Phys. Earth Planet. Inter. 26:233–240.
Mereu, R. F., Baerg, J., and, Wu, J., 1989, The complexity of the continental Earth’s lower crust and Moho from PmP data: Results from CoCrust experiments, in: Properties and Processes of the Lower Crust, Geophysical Monograph Series 51 (R. F. Mereu and D. M. Fountain, eds.), American Geophysical Union, Washington, pp. 1103–1119.
Mereu, R. F., Epili, D., and Green, A. G., 1990, Pg shingles: preliminary results from the onshore GLIMPCE refraction experiment, Tectonophysics 173:617–626.
Mohorovičić, A., 1910, Das Beben vom 8. X. 1909, Jb. Met. Obs. Zagreb 9:1–63.
Mooney, W., and Brocher, T. M., 1987, Coincident seismic reflection/refraction studies of the continental lithosphere: A global review, Rev. Geophys. 25:723–742.
Mueller, S., 1977, A new model of the continental crust, in: The Earth’s Crust (J. G. Heacock, ed.), Geophysical Monograph 20, American Geophysical Union, Washington, pp. 289–318.
Mueller, S., Peterschmitt, E., Fuchs, K., Emter, D., and Ansorge, H., 1973, Crustal structure of the Rhinegraben area, Tectonophysics 20:381–391.
Mueller, S., Ansorge, J., Sierro, N., Finckh, P., and Emter, D., 1987, Synoptic interpretation of seismic reflection and refraction data, Geophys. J. R. Astr. Soc. 89:345–352.
Nikolajev, A. V., and Tregub, F. S., 1970, A statistical model of the Earth’s crust: method and results, Tectonophysics 10:573–578.
Ojo, S. B., and Mereu, R. F., 1986, The effect of random velocity fluctuations on the travel-time and amplitudes of seismic waves, Geophys. J. R. Astr. Soc. 84:607–618.
Ryberg, T., Tittgemeyer, M., and Wenzel, F., 2000, Finite-difference modelling of P-wave scattering in the upper mantle, Geophys. J. Int. 141:87–800.
Sandmeier, K. J., and Wenzel, F., 1986, Seismograms for a complex crustal model, Geophys. Res. Lett., 13:22–25.
Shapiro, S. A., Schwarz, R., and Gold, N., 1996, The effect of random isotropic inhomogeneities on the phase velocity of seismic waves, Geophys. J. Int. 127:783–794.
Smithson, S. B., 1978, Modeling the continental crust: Structural and chemical constraints, Geophys. Res. Lett. 5:749–752.
Steinhart, J. S., and Smith, T. D. (eds.), 1966, The Earth Beneath the Continents,Geophysical Monograph 10, American Geophysical Union, Washington.
Stephenson, R. A., Zelt, C. A., Ellis, R. M., Hajnal, Z., Morel-A-L’Huissier, P., Mereu, R. F., Northey, D.J., West, G.F., and Kanasewich, E., 1989, Crust and upper mantle structure and the origin of the Peace River arch, Bull. Can. Petroleum Geol. 37:224–235.
Tittgemeyer, M., Wenzel, F., Ryberg, T., and Fuchs, K., 1999, Scales of heterogeneities in the continental crust and upper mantle, Pure Appl. Geophys. 156:29–52.
Tittgemeyer, M., Wenzel, F., and Fuchs, K., 2000, On the nature of Pn, J. Geophys, Res. 105:16,173–16,180.
Warner, M., 1987, Migration - Why doesn’t it work for deep continental data, Geophys. J. R. Astr. Soc. 89:21–26.
Weyer, T., 1989, The Conrad discontinuity and the top of the reflective lower crust- Do they coincide?, Tectonophysics 157:39–58.
White, D. J., 1989, Two-dimensional seismic refraction tomography, Geophys. J. 97:223–245.
White, D. J., Forsyth, D. A., Asudeh, I., Carr, S. D., Wu, H., Easton, R. M., and Mereu, R. F.,2000, A seismic-based cross-section of the Grenville orogen in southern Ontario and western Quebec, Can J. Earth Sci. 37:183–192.
Winnardhi, S., and Mereu, R. F., 1997, Crustal velocity structure of the Superior and Grenville provinces of the southeastern Canadian Shield, Can. J. Earth Sci. 34:1167–1184.
Witte, O. Roth, M., and Mailer, G., 1996, Ray tracing in random media, Geophys. J. Int. 124:159–169.
Zelt, C. A., and Smith, R. B., 1992, Seismic travel-time inversion for 2-D crustal velocity structure, Geophys. J. Int. 108:16–34.
Zelt, C. A., Forsyth, D. A., Milkereit, B., White, D. J., Asudeh, I., and Easton, R. M., 1994, Seismic structure of the Central Metasedimentary belt, southern Grenville province, Can. J Earth Sci. 31:243–254.
Zelt, B. C., Ellis, R. M., Zelt, C. A., Hyndman, R. D., Lowe, C., Spence, G. D., and Fisher, M. A., 2001, Three-dimensional crustal velocity structure beneath the Strait of Georgia, British Columbia, Geophys. J. Int. 144:695–712.
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Mereu, R. (2003). The Heterogeneity of the Crust and its Effect on Seismic Wide-Angle Reflection Fields. In: Goff, J.A., Holliger, K. (eds) Heterogeneity in the Crust and Upper Mantle. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-0103-9_10
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