[PDF] Archaeological Investigations At Site 45 Do 273 Chief Joseph Dam Project Washington eBook

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Page : 0 pages
File Size : 36,52 MB
Release : 1984
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Site 45-DO-273 is on the south 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 158.6 cubic meters in 1979 for the U.S. Army Corps of Engineers, Seattle District, as part of a mitigation program for a 10-foot pool raise at the Chief Joseph Dam Project. Systematic aligned random sampling with 1 x 1 x 0.1-meter units of record in 1 x 2 or 2 x 2-meter cells disclosed three prehistoric occuptions on an alluvial fan built onto an early point bar deposit, interbedded with overbank sediments. The two carbon dates obtained are unreliable, several serrated lanceolate projectile points suggest that the first occupation occurred more than 5,500 years ago. The second, more intensive occupation probably occurred about 4,500 years ago. Both of these early occupations fall within the Kartar Phase. The third occupation, in the Coyote Creek Phase, probably took place between 1,500 and 1,000 years ago. The occupations show little change in more than 4,500 years; all are lithic and bone concentrations with microblade technology and lithic stations. The earlier two occupations yielded mussel shell fragments, which are lacking in the later two. No earth ovens or hearths were found. (Author).

Author : Christian J. Miss
Publisher :
Page : 194 pages
File Size : 34,63 MB
Release : 1984
Category : Archaeological surveying
ISBN :

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Site 45-DO-285 is located at the north end of Buckley Bar, a landform in Rufus Woods Lake (Columbia River) at River Mile 587.5 near the Okanogan Highland-Columbia Plateau boundary. The site lies in an Upper Sonoran life zone. In 1979, the University of Washington excavated 137.2 cu m of site volume under contract to the U.S. Army Corps of Engineers, Seattle District, as part of a mitigation program associated with adding 10 ft to the operating level behind Chief Joseph Dam. Systematic, aligned random sampling of 1 x 1 x 0.1-m collection units in 1 x 2 or 2 x 2-m cells disclosed four prehistoric components contained in point bar and later overbank deposits. The first two components are best characterized as Late Hudnut Phase. Projectile point styles and a single radiocarbon date indicate that these older compnents date between 3,000 and 2,000 years ago. The earliest cultural material is contained in point bar sands and gravels and overbandk deposits; the later material in overbank deposits. Projectile point styles from the assemblages are similar to those of the Quilomene Bar Phase. The two more recent components are assigned to the Coyote Creek Phase. They contain projectile points similar to those found in the Cayuse Phase on the Middle Columbia and are dated by these styles and two radiocarbon dates to a period from 2000 B.P. to the protohistoric. (Author).