Archaeological Investigations at Site 45-OK-18, Chief Joseph Dam Project, Washington.
Abstract
Site 45-OK-18 is on the north bank of the Columbia River (River Mile 561), near the Okanogan Highland-Columbia Plateau boundary, in an Upper Sonoran life zone. The University of Washington excavated 166.13 sq m of site volume in 1978 for the U.S. Army Corps of Engineers, Seattle District, as part of a mitigation program for a 10-ft pool raise at the Chief Joseph Dam Project. Systematic aligned random sampling with 1 x 1 x 0.1-m units of record in 1 x 2 x or 2 x 2-m cells disclosed three prehistoric occupation on a terrace built from Columbia River gravels covered by overbank and aeolian sediments. The two carbon dates obtained, the Mt.St. Helens P and Yn series tephra recovered, and the several lanceolate, shouldered lanceolate and large side-notced projectile points suggest that the three occupations occurred between 4000 and 3000 B.P., which places them in the Hudnut Phase. The site appears to have been abandoned after that time. The second of the three occupations was the most intense. A cache of stone beads is associated with the second occupation. Lethic and bone concentrations indicate that the site served as a base camp for hunting and gathering. A single firepit was found. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1984
- Accession Number
- ADA163424
Entities
People
- Manfred E. W. Jaehnig
- R. Lee Lyman
- S. Neal Crozier
- Sarah K. Campbell
- Stephanie Livingston
Organizations
- University of Washington