1887
Volume 31 Number 4
  • E-ISSN: 1365-2478

Abstract

A

Gravity data have been transformed into a three‐layer, three‐dimensional model by using an automatic procedure based on linear filtering. The Bouguer anomaly is first transformed by linear filtering into density variations located between two planes 1100 and 2500 m deep. These densities are then transformed into thicknesses with a constant density contrast of 0.4 g/cm3 with two geological constraints for the second and third interface:

—minimum at 2500 m depth;

—maximum below a variable limit given by geology.

This gives the contact between the second and third layer. Differences between measured and computed gravity are then applied by a similar procedure to a layer located between depths of 0 and 500 m, giving the contact between the first and second layer. Interesting secondary anticlines and transverse faults are shown by various structural maps.

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2006-04-27
2020-04-06
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References

  1. Bichara, M. and Lakshmanan, J.1979, Automatic deconvolution of gravimetric anomalies, Geophysical Prospecting27, 798–807.
    [Google Scholar]
  2. Bott, M. H. P. and Smith, R. A.1958, The estimation of limiting depth of gravitating bodies, Geophysical Prospecting6, 1–10.
    [Google Scholar]
  3. Debeglia, N.1977, Apports de synthèses géophysiques à la connaissance du socle du Bassin de Paris, 1977, BRGM Orléans 77 SGN 535 GPH,
    [Google Scholar]
  4. Fuller, B.1967, Mining Geophysics, Vol. 2, published by SEG, Tulsa , 1967 October.
    [Google Scholar]
  5. Lakshmanan, J.1973, Gravity and gamma‐gamma mapping of sink‐hole areas in Lutetian Gypsum, North East of Paris, IAEG Symposium on Engineering Geology, Hannover , 1973 September.
    [Google Scholar]
  6. La Porte, M.1963, Calcul de la forme d'une structure homogène à partir de son champ gravimétrique, Geophysical Prospecting11, 276–291.
    [Google Scholar]
  7. Naudy, H.1971, Automatic determination of depth on aeromagnetic profiles, Geophysics36, 717–722.
    [Google Scholar]
  8. Pomerol, B.1980, Style tectonique des Pays au Nord‐Ouest de l'Oise—Röle des différentes directions structurales, Bulletin d'Information des Géologues du Bassin de Paris17, 21–25.
    [Google Scholar]
  9. Weber, D.1973, Le socle antetriasique sous la partie Sud du Bassin de Paris d'après les données géophysiques, Bulletin BRGM Orléans, Sect. II 1973, 219–343.
    [Google Scholar]
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