North American Database of Archaeological Geophysics

Database Report:

Site Name: Petaluma Adobe State Historic Park; Site Number: CA-Son-2294/H; County: Sonoma; State: California; Country: USA; Ownership: State; Landform: Alluvial;

Date of Site: 19th century; Period Type: Historic; Culture: Native American/Mexican-Californian; Site Type: Rancho; Site Size: ~6,500 sq m;

Survey Type: Magnetic Gradiometry;

Instrument: Geometrics 858 Cesium Magnetometer; Sampling Interval: 1.0 x 0.5 m; Prospecting Depth: 1-1.5 m; Area Surveyed: 8,000 sq m; Date of Survey: June-1996; Land Cover Type: Short to tall (~3 ft.) grass; Ground Truthing: Yes;

Graphics/Imagery:

Results of the alkali-vapor gradiometer survey at Petaluma Adobe State Historic Park;

Comparison of alkali-vapor gradiometer images by resolution;

Survey Type: Magnetic Gradiometry;

Instrument: Geometrics 856AX Proton Precession Magnetometer; Sampling Interval: 1.0 x 1.0 m; Prospecting Depth: 1-1.5 m; Area Surveyed: 400 sq m; Date of Survey: Sept-1997; Land Cover Type: Short to tall (~3 ft.) grass; Ground Truthing: Yes;

Graphics/Imagery:

Comparison of proton precession gradiometer image to proton precession magnetometer images created with different sensor heights;

 

Survey Type: Magnetometry-Total Field;

Instrument: Geometrics 858 Cesium Magnetometer; Sampling Interval: 1.0 x 0.1 m; Prospecting Depth: 1-1.5 m; Area Surveyed: 400 sq m; Date of Survey: Sept-1997; Land Cover Type: Short to tall (~3 ft.) grass; Ground Truthing: Yes;

Graphics/Imagery:

Comparison of alkali-vapor magnetometer images by sensor height;

Comparison of diurnally-corrected alkali-vapor magnetometer images;

Survey Type: Electromagnetic Conductivity;

Instrument: Geonics EM-38; Sampling Interval: 1.0 x 1.0 m; Prospecting Depth: to 1.5 m; Area Surveyed: 8,000 sq m; Date of Survey: June-1996; Land Cover Type: Short to tall (~3 ft.) grass; Ground Truthing: Yes;

Graphics/Imagery:

Results of the electromagnetic conductivity survey at Petaluma Adobe State Historic Park;

  

Project Name: Petaluma Adobe State Historic Park (CA-Son-2294/H), CA;

Reference: Silliman, S.W., Farnsworth, P., and K.G. Lightfoot (2000). Magnetometer Prospecting in Historical Archaeology: Evaluating Survey Options at a 19th-Century Rancho Site in California. Historical Archaeology 34(2):89-109. (used with permission).

Silliman, S.W. (2000). Colonial Worlds, Indigenous Practices: The Archaeology of Labor on a 19th-Century California Rancho. Ph.D. Disseration, University of California-Berkeley.

Survey by: Stephen W. Silliman, Department of Anthropology, University of Massachusetts-Boston, 100 Morrissey Blvd., Boston, MA 02125-3393. Phone: (617) 287-6854. E-mail: stephen.silliman@umb.edu.

Survey for: Petaluma Adobe State Historic Park;

Report Location: NA; Report Type: Journal Article;

Abstract/Summary