Site Event/Activity record ESF22445 - Geophysical Survey - Land North of the Street, Lidgate, Suffolk

Geophysical survey conducted ahead of pipelines/cables works. The detailed fluxgate gradiometer and earth resistance meter surveys were successful in identifying a range of anomalies, however only a small degree of correlation was observed between the two sets of data. Superficial deposits did cause a degree of issues with the earth resistance meter data collection. High resistance readings derived from the underlying geology may have prevented finer detail from being recorded. The narrow size of the cable easement has further caused a small degree of difficulty in the interpretation of the anomalies. Areas of magnetic enhancement relating to potential backfilled earthworks and discrete positive anomalies interpreted as archaeological rubbish pits have been recorded in the western field and landscaped garden area by the fluxgate gradiometer. Two further positive linear anomalies were also recorded in the eastern field that are indicative of archaeological or agricultural ditches. Discrete high resistance anomalies that are potentially of archaeological origin and larger areas of high and low resistance interpreted as potential ditches and banks were further recorded by the earth resistance meter in the western field and landscaped garden. One discrete area of high resistance in the eastern field recorded within the centre of the two positive linear anomalies recorded by the fluxgate gradiometer are also worthy of note. Two linear high resistance anomalies also in the western field could be of archaeological or agricultural origin. Further archaeological investigations of these anomalies would be prudent to test the hypotheses given within this report.