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Site name: Ward

Type of survey: Resistivity; Instrument: Geoscan Research RM-15; Prospection depth: 0.5 m; Sampling interval: 0.5 x 0.5 m; Area surveyed: 20 x 40 m; Date of survey: 7/97.

Comments: Within this survey area three large house depressions are clearly visible on the surface that are truncated by a modern walkway in this Bismarck city park (see photo, above). The left and middle houses are parallel and cearly visible in this image as dark zones cut into the native earth (white). The axis of the larger right house is angled to the right and partially overlaps into the middle house. Variations in the texture within each house probably reflect interior house features, including post holes, storage and cache pits, and partitions, but also rodent activity and other disturbances to this city park.

Type of survey: Magnetic gradiometry; Instrument: Geoscan Research FM-36 fluxgate gradiometer; Prospection depth: up to 1.5 m; Sampling interval: 0.5 x 0.5 m (digital average of 32 readings); Area surveyed: 20 x 40 m; Date of survey: 7/97.

Comments: The steel rebar pins that hold the walkway's beams in place introduce clear magnetic noise in this area. The left and middle houses are parallel and visible as darker zones in this image. The right-most house, larger, and angled to the right is more amorphous magnetically and overlaps the middle house. The various point anomalies of small size indicate historically introduced pieces of iron in the soil as well as house features including hearths, post-holes, storage and cache pits, and partitions.

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(updated: 7/00)