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Chapter 3
Analysis of Sediments Associated with Human Remains Found at Columbia Park, Kennewick, WA
Gary Huckleberry and Julie K. Stein

Table 1

Table 1: Stratigraphic Nomenclature of Huckleberry et al. (1998) and Wakeley et al. (1998) for the Kennewick Man Discovery Site at Columbia Park, Kennewick, WA.

Huckleberry et al. (1998)

Lithostratigraphic Unit I. Surface deposit (25-80 cm thick); 2.5Y and 10YR colors; predominantly very fine to fine sand; no internal bedding or textural grading; slightly calcareous with a surface (plowed) organic horizon; discontinuous Mazama tephra deposits ranging from 15 cm thick layer to sporadic, < 5 mm diameter aggregates.

Lithostratigraphic Unit II. Buried stratified deposits (> 4 m thick); 2.5 Y colors; textures vary from well sorted fine sand to poorly sorted very fine sand, and silt; boundaries between strata are gradual in the upper 2 m (bioturbated); bed thickness ranges 5-50 cm; faint fining-upward stratification in places; gleyed mottles and calcitic/silicic concretions in upper 1 m.

Wakeley et al. (1998)

Unit I. Mostly silt and decayed vegetation; 2.5Y and 10YR colors; modern topsoil.

Unit II. Mostly sand; heavy minerals common; 2.5Y and 5Y colors; bioturbated; mixed eolian and low-energy alluvium.

Unit III. Mostly silt-size glass (Mazama) mixed with silt and sand; 10YR 8/2 (white); thickness varies; not present at all profiles.

Unit IV. Mostly silt; 2.5Y colors; calcareous and siliceous concretions common, especially in upper portions; bioturbated; floodplain backwater, slackwater, and distal levee deposits.

Unit V. Silt and clay mix; 2.5Y colors; noncalcareous; bioturbated; floodplain slackwater and levee deposits.

Unit VI. Intercalated sand and silt; 10YR colors; sands contain abundant heavy minerals; shoreline deposits; not bioturbated.

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