Water Supply Boreholes Research Articles

Geophysical studies of a buried valley system near Ixworth, Suffolk

Narrow, deeply-incised channels filled with till, sand and gravel occur in the Chalk bedrock of East Anglia. These buried valleys are considered to have been formed mainly by sub-glacial meltwaters and are sometimes referred to as ‘tunnel-valleys’. Their existence has been proved, largely fortuitously, by water supply boreholes but geophysical surveys provide a means of investigating the form of these concealed channels more systematically. In trial surveys of a buried valley system near Ixworth, Suffolk gravity, conductivity mapping, electrical sounding and seismic refraction surveys have been made. The first two methods proved most successful in delineating the till in-fill and the results indicate a complex and variable form for the buried valleys. The till in-fill occurs frequently in narrow, steep-sided channels but also as a larger, more complex deposit up to 100 m thick at the junction of three valleys.

Wells and Boreholes for Water Supply. ["Dumbleton"] (Book Review)

Wells and Boreholes for Water Supply. ["Dumbleton"] (Book Review)