REPORT ON GEOPHYSICAL SURVEY, MARCH 1995 BASTON DROVE, THURLBY, LINCS.
Author(s): M A Cole
Geophysical survey was undertaken at Baston Drove, Thurlby, Lincolnshire in response to a request from the Fenland Management Project (FMP). The aim of the survey was to assist with the interpretation of two trenches excavated by the FMP over concentrations of Romano-British material on the Fen Edge alongside the present course of the river Glen. A rectilinear pattern of enclosures was detected as well as a number of probable pits. Superimposed on these were a large number of very intense positive magnetic anomalies of a form and magnitude normally associated with thermoremanent magnetic features such as kilns or hearths. A test pit was subsequently hand-excavated over one of these anomalies and revealed that the magnetometer was apparently responding to a naturally occurring iron-rich deposit, possibly an iron pan. The intensity of the magnetism associated with these deposits however, remains unexplained, although it is possible that a chemical remanence has been acquired during their formation. Further laboratory work is currently being undertaken to investigate the magnetic character of these deposits. The results of these endeavours will be reported upon in due course.
- Report Number:
- 55/1995
- Series:
- AML Reports (New Series)
- Pages:
- 10
- Keywords:
- Geophysical Survey Magnetic Susceptibility Magnetometer
