The use of geophysical images in subsurface investigations of the Solway Basin, England
This paper focuses on the use of low-cost geophysical data sets in raster format for structural analysis of a small onshore basin in NW England. Gravity and aeromagnetic data are expressed as images enhanced by a variety of image-processing methods, aimed at expressing the data in a form most readily appreciated by human vision. This involves side-illumination of the data using directional first derivative filters, and pseudo-colouring based on look-up table techniques. The principal data handling method was trend-surface analysis and calculation ofnth-order residual images. Most of the known structural attributes of the basin are resolved, together with previously unknown features affecting the basin's deep architecture.
Unable to display preview. Download preview PDF.
- Aarnisalo, J.: 1984, ‘Image Processing and Integration of Geophysical, Landsat and other Data as a Tool for Mineral Exploration in Glaciated Precambrian Terrain’,Proceedings of the International Symposium on Remote Sensing of Environment. 3rd Thematic Conference. Remote Sensing for Exploration Geology, ERIM, Ann Arbor, pp. 107–28.Google Scholar
- Day, J. B. W.: 1970, ‘Geology of the Country around Bewcastle’,Memoir of the Geological Survey of Great Britain.Google Scholar
- Drury, S. A.: 1986, ‘Remote Sensing of Structure in Temperate Agricultural Terrains’,Geological Magazine 123, 113–21.Google Scholar
- Drury, S. A.: 1987,Image Interpretation in Geology, Allen and Unwin, London, pp. 243.Google Scholar
- Drury, S. A. and Walker, A. S. D.: 1987, ‘Display and Enhancement of Gridded Aeromagnetic Data of the Solway Basin’,International Journal of Remote Sensing 8, 1433–44.Google Scholar
- Gibbs, A.: in press, ‘Extensional Styles and their Seismic Expression’, in Tankard and Backwill (eds.),Extensional Tectonics and Stratigraphy of the North Atlantic Margin, American Association of Petroleum Geologists, Memoir.Google Scholar
- Guinness, E. A., Arvidson, R. E., Leff, C. E., Edwards, M. H. and Bindschadler, D. L.: 1983, ‘Digital Image Processing Applied to Analysis of Geophysical and Geochemical Data for Southern Missouri’,Economic Geology 78, 654–63.Google Scholar
- Kimbell, G. S., Chadwick, R. A., Holliday, D. W. and Werngren, O. C.: 1989, ‘The Structure and Evolution of the Northumberland Trough from new Seismic Reflection Data and its Bearing on Modes of Continental Extension’,Journal of the Geological Society of London 146, 775–787.Google Scholar
- O'Sullivan, K. N.: 1986, ‘Computer Enhancement of Landsat, Magnetic and other Regional Data’, in D. A. Berkman (ed.),Publications of 13 CMMI Congress, Singapore. Volume 2: Geology and Exploration. pp. 1–10.Google Scholar
- Robson, D. A. (ed.): 1981,The Geology of North East England, Special Pulication of the Natural History Society of Northumbria, Newcastle upon Tyne, pp. 113.Google Scholar
- Tucker, D. H., Anfiloff, V. and Luyendyk, A.: 1985, ‘New Large Area Standard Format Magnetic Pixel Maps of Australia’,Exploration Geophysics 16, 294–9.Google Scholar