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A seismic profile in southern Norway

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Abstract

Data from a reversed seismic crustal profile crossing the Caledonides of southern Norway suggest a continuously increasing P-wave velocity followed by a low-velocity zone extending from a depth of about 14 km downwards. Interpretation of observed travel time and amplitude characteristics leads to a thickness of 4 km and velocity of 6.0 km/s for this layer, the velocity above and below it being about 6.6 km/s. The role of such a velocity inversion is discussed in the tectonic framework of the Caledonian orogeny and other relevant geophysical information, and it is suggested that the low-velocity zone materializes deep-seated sediments under Precambrian crystalline rocks. The structure of the lower crust is more tentatively established, but still in reasonable agreement with other seismic investigations in the general profiling area.

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References

  • Aki, K., Christoffersson, A. andHusebye, E. S. (1977),Determination of the three-dimensional seismic structure of the lithosphere. J. geophys. Res.82, 277–296.

    Google Scholar 

  • Berteussen, K.-A. (1977),Moho depth determinations based on spectral-ratio analysis of NORSAR longperiod P waves. Phys. Earth Planet. Inter.15, 13–27.

    Google Scholar 

  • Cook, F. A., Albaugh, D. S., Brown, L. D., Kaufman, S., Oliver, J. E. andHatcher, R.D. (1979).Thin-skinned tectonics in the crystalline southern Appalachians: COCORP seismic-reflection profiling of the Blue Ridge and Peidmont, Geology7, 563–567.

    Google Scholar 

  • Fuchs, K. andMüller, G. (1971),Computation of synthetic seismograms with the reflectivity method and comparison with observations, Geophys. J. R. astr. Soc.23, 417–433.

    Google Scholar 

  • Grønlie, G., Heier, K. S. andSwanberg, C. A. (1977),Terrestrial heat-flow determinations from Norway, Nor. Geol. Tidsskr.57, 153–162.

    Google Scholar 

  • Kanestrøm, R. andHaugland, K. (1971), ‘Profile section 3–4’, inDeep Seismic Sounding in Northern Europe, ed. by Andreas Vogel, Swedish Natural Science Research Council, Stockholm, pp. 76–91.

    Google Scholar 

  • Kind, R. (1976),Computation of reflection coefficients for layered media, J. Geophys.42, 191–200.

    Google Scholar 

  • Le Pichon, X., Ewing, J. andHoutz, R. E. (1968),Deep-sea sediment velocity determinations made while reflection profiling, J. geophys. Res.73, 2597–2614.

    Google Scholar 

  • Lund, C.-E. (1979).Crustal structure along the Blue Road Profile in northern Scandinavia, Geol. Fören. Sth. Förh.101, 191–204.

    Google Scholar 

  • Mueller, S. andLandisman, M. (1971),An example of the unified method of interpretation for crustal seismic data, Geophys. J. R. astr. Soc.23, 365–371.

    Google Scholar 

  • Mykkeltveit, S. (1978),Computation of Synthetic Body Wave Seismograms. Theory, Program Description and Applications, Seismological Observatory, Univ. of Bergen.

  • Osberg, P. H. (1978), ‘Synthesis of the geology of the northeastern Appalachians, U.S.A.’, inIGCP Project 27, Caledonian-Appalachian Orogen of the North Atlantic Region, Geol. Surv. Canada, Paper 78-13, 137–147.

  • Roberts, D. (1978), ‘Caledonides of South Central Norway’, inIGCP Project 27, Caledonian-Appalachian Orogen of the North Atlantic Region, Geol. Surv. Canada, Paper 78-13, 31–37.

  • Sellevoll, M. A. (1973),Mohorovičić discontinuity beneath Fennoscandia and adjacent parts of the Norwegian Sea and the North Sea, Tectonophysics20, 359–366.

    Google Scholar 

  • Sellevoll, M. A. andWarrick, R. E. (1971),A refraction study of the crustal structure in southern Norway, Bull. seism. Soc. Am.61, 457–471.

    Google Scholar 

  • Smith, R. B., Braile, L. W. andKeller, G. R. (1975),Upper crustal low-velocity layers: Possible effect of high temperatures over a mantle upwarp at the Basin Range—Colorado Plateau transition, Earth Planet. Sci. Lett.28, 197–204.

    Google Scholar 

  • Sturt, B. A. andThon, A. (1978), ‘Caledonides of southern Norway’, inIGCP Project 27, Caledonian-Appalachian Orogen of the North Atlantic Region, Geol. Surv. Canada, Paper 78-13, 39–47.

  • Tozer, E. T. andSchenk, P. E. (eds.) (1978),IGCP Project 27, Caledonian-Appalachian Orogen of the North Atlantic Region, Geol. Surv. Canada, Paper 78-13, 242 pp.

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  1. Svein Mykkeltveit

    Present address: NTNF/NORSAR, P.O. Box 51, N-2007, Kjeller, Norway

Authors and Affiliations

  1. Seismological Observatory, University of Bergen, Allégaten 41, N-5014, Bergen U, Norway

    Svein Mykkeltveit

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  1. Svein Mykkeltveit
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Mykkeltveit, S. A seismic profile in southern Norway. PAGEOPH 118, 1310–1325 (1980). https://doi.org/10.1007/BF01593069

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  • DOI: https://doi.org/10.1007/BF01593069

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