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Quarterly Journal of Engineering Geology and Hydrogeology
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Quarterly Journal of Engineering Geology and Hydrogeology; 1984; v. 17; issue.2; p. 103-115;
DOI: 10.1144/GSL.QJEG.1984.017.02.03
© 1984 Geological Society of London

Article

The location of the Stour buried tunnel-valley using geophysical techniques

R. D. Barker & D. Harker*

Alta Geophysics, University of Birmingham, P.O. Box 363, Birmingham B15 2TT;
* Anglian Water Authority, Essex River Division, Rivers House, 129 Springfield Road, Chelmsford, Essex CM2 6JN

A detailed gravity survey has been conducted over the Stour buried tunnel-valley between Sturmer and Long Melford in Essex. The resulting Bouguer anomaly map indicates that the density of the boulder clay filling the valley is higher than that of the underlying chalk. The interpretation of the Bouguer anomaly clearly indicates the subsurface position of the Stour buried tunnel-valley and calculations of the depth to the base of the valley fill have been attempted. Detailed resistivity sounding surveys at proposed borehole sites confirmed the gravity interpretation and provided more detailed information on drift lithology and thickness.


Related articles in Quarterly Journal of Engineering Geology and Hydrogeology:

Discussion on ‘The location of the Stour buried tunnel-valley using geophysical techniques’ by R. D. Barker & D. Harker
J. D. Cornwell
Quarterly Journal of Engineering Geology and Hydrogeology 1986 19: 207. [Abstract]  

R. D. Barker replies

Quarterly Journal of Engineering Geology and Hydrogeology 1986 19: 207-208. [Abstract]  



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