Type of survey: Magnetic gradiometry; Instrument: Geoscan Research FM-36 fluxgate gradiometer; Prospection depth: up to 1.5 m; Sampling interval: 1 x 0.5 m; Area surveyed: 80 x 30 m; Date of survey: 8/97.
Comments: Over the past decade about seven hectares of the
ridge upon which this survey is located has been part of a
project in which approximately 27,000 surface artifacts have been
mapped in this desert landscape. The magnetic survey was
conducted to locate hearth features by their relatively strong
magnetic signatures. Two are suggested in this image. The
diffuse magnetic area in the upper left shows dark staining with
charcoal in the soil and may indicate a washed out area of
burning. The adjoining image depicts the distribution of surface
lithic debris in the area surveyed, mapped in an on-going
landscape archaeology project (see
Landscape Archaeology in Colorado).
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