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Last-glacial locality q Source of Pliocene _^ Diatom-derived with Pliocene diatoms diatoms paleowind

FIGURE 17 Map showing the distribution of loess in the northwestern United States (from Thorp and Smith, 1952), inferred paleo-winds from loess and wind flute data (from Lewis et al., 1975; Lewis and Fosberg, 1982; Pierce et al., 1983; Glenn et al., 1983; and Busacca and McDonald, 1994), and inferred paleowinds from offshore and lacustrine diatom data (from Sancetta et al., 1992). Locations of last glacial maximum (LGM) localities where exotic Pliocene diatoms are found are from Sancetta et al. (1992); locations of Pliocene diatom-bearing beds are from Bradbury (1982, 1992).

Last-glacial locality q Source of Pliocene _^ Diatom-derived with Pliocene diatoms diatoms paleowind

FIGURE 17 Map showing the distribution of loess in the northwestern United States (from Thorp and Smith, 1952), inferred paleo-winds from loess and wind flute data (from Lewis et al., 1975; Lewis and Fosberg, 1982; Pierce et al., 1983; Glenn et al., 1983; and Busacca and McDonald, 1994), and inferred paleowinds from offshore and lacustrine diatom data (from Sancetta et al., 1992). Locations of last glacial maximum (LGM) localities where exotic Pliocene diatoms are found are from Sancetta et al. (1992); locations of Pliocene diatom-bearing beds are from Bradbury (1982, 1992).

mented in both the interior of Alaska and on the Arctic Coastal Plain (Fig. 20). Distribution of eolian sand relative to probable source sediments and, in some places, orientations of dunes indicate northeasterly paleo-winds in most parts of Alaska (Fig. 18).

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