pure and applied geophysics

, Volume 120, Issue 2, pp 375–388 | Cite as

A geophysical approach to the granite batholith under the eastern Southern Uplands, Scotland

  • E. Lagios
  • R. G. Hipkin


From our interpretation of the Bouguer gravity and aeromagnetic anomalies in south-east Scotland, we conclude that a massive granite batholith underlies the greater part of the eastern Southern Uplands. The granite model which we computed earlier from gravity anomalies in the Tweeddale area fits the observed magnetic anomalies closely, if a normal magnetization of 0.095 A m−1 is assigned, similar to values found for exposed local granites. Further gravity modelling shows that, apart from the Tweeddale boss, the granite shallows to less than 1 km near Lammer Law in East Lothian and extends north of the Lammermuir Fault. A model for the East Lothian volcanics was computed from their aeromagnetic anomalies, then their gravitational effect was combined with that estimated for the Devonian and Carboniferous sediments and the result stripped off the observed gravity field. The residual gravity anomalies were used to generate a two-dimensional model for the granite north of the Lammermuir Fault. The expected tectonic consequences of a massive granite batholith in the eastern Southern Uplands are compared with the known development of faults and sedimentary basins around its margins.

Key words

Gravity Magnetism Scotland 


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  1. Allsop, J. M. (1974),Geophysical surveys at the Spilmersford borehole, East Lothian, Scotland, Bull. geol. Surv. Gt. Br.45, 63–72.Google Scholar
  2. Bamford, D., Nunn, K., Prodehl, C., andJacob, B. (1977),LISPB-III. Upper crustal structure of N. Britain, J. Geol. Soc.133, 481–488.Google Scholar
  3. Bamford, D., Nunn, K., Prodehl, C., andJacob, B. (1978),LISPB-IV. Crustal tructure of Northern Britain, Geophys. J. R. astr. Soc.54, 43–60.Google Scholar
  4. Bennett, J. R. P. (1969),Results of geophysical surveys in the Haddington area, Inst. Geol. Sci. Rep. GP/AG/70/13.Google Scholar
  5. Bluck, B. J. (1978),Sedimentation in a late orogenic basin: the Old Red Sandstone of the Midland Valley of Scotland, Repr. Geol. Jour. Sp. Is. No. 10.Google Scholar
  6. Brown, G. C. (1979),Some geochemical and geophysical constraints on the origin and evolution of Caledonian granites, inThe Caledonides of the British Isles Reviewed (eds A. L. Harris, L. H. Holland and B. E. Leake).Google Scholar
  7. Brown, G. C., andLocke, C. A. (1979),Space-time variations in Brttish Caledonian granites: some geophysical correlations, Earth Planet. Sci. Lett.45, 69–79.Google Scholar
  8. Bullerwell, W. (1968),Aeromagnetic map of part of Great Britain and Northern Ireland, Sheet 11, Inst. Geol. Sci., London.Google Scholar
  9. Davies, A. (1974),The Lower Carboniferous (Dinantian) sequences at Spilmersford. East Lothian, Scotland, Bull. geol. Surv. Gt. Br.45, 1–24.Google Scholar
  10. Howell, H. H., Geikie, A., andYoung, J. (1866),The Geology of East Lothian, Mem. Geol. Surv. Gt. Britain, London.Google Scholar
  11. Lagios, E. (1979),Gravity and other geophysical studies relating to the crustal structure of south-east Scotland, Ph.D. Thesis, University of Edinburgh.Google Scholar
  12. Lagios, E., andHipkin, R. G. (1979),The Tweeddale Granite — a newly discovered batholith in the Southern Uplands, Nature280, 672–675.Google Scholar
  13. Longman, C. D., Bluck, B. J., andVan Breemen, O. (1979),Ordovician conglomerates and the evolution of the Midland Valley, Nature280, 578–581.Google Scholar
  14. McLean, A. C., andQureshi, I. R. (1966),Regional gravity anomalies in the western Midland Valley of Scotland, Trans. Roy. Soc. Edin.66, 267–283.Google Scholar
  15. Powell, D. W. (1970),Magnetized rocks within the Lewisian of Western Scotland and under the Sourthern Uplands, Scott. J. Geol.6, 353–371.Google Scholar
  16. Shiells, K. A. G. (1963),The geological structure of north-east Northumberland, Trans. R. Soc. Edin.,65, 449–481.Google Scholar
  17. Simpson, J. B. (1928),Notes on the geology of the Kidlaw District, East Lothian, Trans. Edinb. Geol. Soc.12, 111–113Google Scholar
  18. Smith, T. E. (1967),A preliminary study of sandstone sedimentation in the Lower Carboniferous of the Tweed Basin, Scott. J. Geol.3, 282–305.Google Scholar
  19. Walker, F. (1924),Four granitic intrusions in SE Scotland, Trans. Edinb. Geol. Soc.11, 357–365.Google Scholar
  20. Walker, F. (1928),Plutonic intrusions of the Southern Uplands, east of Nith Valley, Geol. Mag.65, 153–162.Google Scholar
  21. Watson, J. (1964),Conditions in the metamorphic Caledonides during the period of late orogenic cooling, Geol. Mag.101, 457–465.Google Scholar

Copyright information

© Birkhäuser Verlag 1982

Authors and Affiliations

  • E. Lagios
    • 1
  • R. G. Hipkin
    • 2
  1. 1.Seismological LaboratoryAthens UniversityGreece
  2. 2.Department of GeophysicsEdinburgh UniversityUK

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