2012

The 2012 gradiometry survey was carried out with a Bartington fluxgate gradiometer in grids of 30 x 30m, at a resolution of 0.5 x 0.125m (giving a total of 14,400 sample measurements per grid). Fifty-three grids were completed which, added to the previous year’s survey, covered a total area of 8.5 hectares. Targeted resistance survey was undertaken using Geoscan RM15 resistance meters with standard 0.5m twin probe arrays. Twenty-four grids of 20 x 20m, with samples at 0.5 x 0.5m metres were completed.

The magnetic results show a lot of disturbance, evident from many small dipoles. In this context it is difficult to ascertain whether the anomalies are modern agricultural debris, or relate to burning events from the cursus and related features. A general NNW-SSE trend across the majority of the data reflects the dominant direction of modern ploughing, and a large linear dipole running NW-SE relates to a modern overhead cable. However, there are also many older features, some of which complement the aerial photo survey. These include a newly-discovered round barrow in the north east of the northern field, a possible plough-damaged barrow to the north-west, as well as a rectangular anomaly of uncertain origin in the northernmost area. Targeted resistance has not elucidated these further, though there are anomalies that may reflect geological activity. It is currently unclear whether the many small low resistance pits are natural or anthropogenic.

The resistance proved effective at detecting the low resistance ditches associated with what are most probably a cluster of round barrows in the south end of the field. Two were known from the aerial survey, but this work has shown that the central burial of one appears intact, and there may be a third, damaged barrow immediately to the north-east. Comparing these results with the gradiometry, it is clear that gradiometry is not showing these strongly and therefore a number of other similar faint signatures are therefore worthy of further investigation.

Exploratory gradiometry survey was undertaken in the field to the south where two overlapping palisaded enclosures have been recorded as cropmarks on aerial photographs, representing Iron Age settlement features. The nature of these features have been elucidated and additional detail added to that known from cropmarks, though further work is required to complete this.

The summary report can be downloaded here.

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