1887
Volume 38 Number 8
  • E-ISSN: 1365-2478

Abstract

A

Three‐dimensional inverse gravity modelling is used to determine the structure of the Carboniferous sediments underlying the Jurassic and Permo‐Triassic formations in the Cheshire Basin. The gravity effect of the Jurassic and Permo‐Triassic rocks was first removed from the observations and the resulting residual gravity field was then inverted to map variations in depth of the Carboniferous formations. The inversion technique is performed in the frequency domain, enabling rapid computation of solutions for large gridded data sets. Evaluation of results shows that there is good agreement between calculated and observed values, with interpreted depths to the base of the Carboniferous in excess of 6 km. Gravity inversion results also delineate areas of faulting on the south‐western and eastern edges of the basin.

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2006-04-27
2024-04-19
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References

  1. British Geological Survey
    British Geological Survey 1979. Geological Survey Ten Mile Map. South sheet. Scale 1:625,000.
  2. Chai, Y. and Hinze, W. J.1988. Gravity inversion of an interface above which the density contrast varies exponentially with depth. Geophysics53, 837–846.
    [Google Scholar]
  3. Colter, V. S. and Barr, K. W.1975. Recent developments in the geology of the Irish Sea and Cheshire basin. Petroleum and the Continental Shelf of North West Europe, A.W.Woodland (ed.), 1, 61–73. Applied Science Publishers Ltd.
    [Google Scholar]
  4. Cordell, L. and Henderson, R. G.1968. Iterative three‐dimensional solution of gravity anomaly data using a digital computer. Geophysics33, 596–601.
    [Google Scholar]
  5. Gale, I. N., Evans, C. J., Evans, R. B., Smith, I. F., Houghton, M. T. and Burgess, W. G.1984. The Permo‐Triassic aquifers of the Cheshire and West Lancashire basins. British Geological Survey.
    [Google Scholar]
  6. Gerard, A. and Debeglia, N.1975. Automatic three‐dimensional modelling for the interpretation of gravity or magnetic anomalies. Geophysics40, 1014–1034.
    [Google Scholar]
  7. Granser, H.1987a. Nonlinear inversion of gravity data using the Schmidt‐Lichtenstein approach. Geophysics52, 88–93.
    [Google Scholar]
  8. Granser, H.1987b. 3D interpretation of gravity data from sedimentary basins using exponential density function. Geophysical Prospecting35, 1030–1041.
    [Google Scholar]
  9. Lamb, R. C., Smith, K. and Rowley, W. J.1983. Geophysical investigations in the Cheshire Basin, Northern England. Deep Geology Unit report No. 83/7, Institute of Geological Sciences.
    [Google Scholar]
  10. Oldenburg, D. W.1974. The inversion and interpretation of gravity anomalies. Geophysics39, 526–536.
    [Google Scholar]
  11. Parker, R. L.1973. The rapid calculation of potential field anomalies. Geophysical Journal of the Royal Astronomical Society31, 447–455.
    [Google Scholar]
  12. Pilkington, M. and Crossley, D. J.1986. Determination of crustal interface topography from potential fields. Geophysics51, 1277–1284.
    [Google Scholar]
  13. Price, C. A.1989. Structural evolution of the Irish Sea Basin. Journal of the Geological Society of London (in press).
    [Google Scholar]
  14. Sprenke, K. F. and Kanasewich, E. R.1982. Gravity modelling in Western Canada. 52nd SEG meeting, Dallas , U.S.A. , Expanded Abstracts, 250–252.
    [Google Scholar]
  15. White, P. H. N.1948. Gravity data obtained in Great Britain by the Anglo‐American Oil Co. Limited. Quarterly Journal of the Geological Society of London104, 339–364.
    [Google Scholar]
  16. Whittaker, A.1985. Atlas of Onshore Sedimentary Basins in England and Wales . British Geological Survey. A.Whittaker (ed.). Blackie and Son.
    [Google Scholar]
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  • Article Type: Research Article

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