qr98

Late-Glacial Vegetation and Climate Change in Western Oregon.
L.D. Grigg and C. Whitlock (1998),
Quaternary Research 49: 287-298.

Abstract

	Figure 1.-and-nbsp; Map showing Oregon study sites and other sites in Washington (WA) and Oregon (OR) used for regional comparisons (ML, Mineral Lake; DL, Davis Lake; BGL, Battle Ground Lake; IPF, Indian Prarie Fen; CA, California; NV, Nevada).-and-nbsp; Insets show topographic maps of Little Lake and Gordon Lake, with elevations in meters. (Fig1.gif, 176KB / Fig1.pdf, 276KB)
	Table 1.-and-nbsp; Uncalibrated radiocarbon dates and calibrated ages for Little Lake and Gordon Lake. (Table1.gif, 51KB / Table1.pdf, 8KB) -and-nbsp;
	Figure 2.-and-nbsp; Age-vs-depth curves and regression equations for Little Lake and Gordon Lake.-and-nbsp; Age calculations were derived using calibrated ages (see Table 1). -and-nbsp; Standard deviations for radiocarbon and calibrated ages are listed in Table 1. (Fig2.gif, 18KB / Fig2.pdf, 9KB)

	Table 2.-and-nbsp; Description of Little Lake pollen percentages diagram. (Table2.gif, 59KB / Table2.pdf, 10KB) -and-nbsp;
	Figure 3.-and-nbsp; Pollen percentages for selected taxa and charcoal accumulation rates during the late-glacial period at Little Lake. Open curves represent 5X exaggeration of black curves. Pollen zones were calculated using a constrained cluster analysis (CONISS; Grimm, 1988). (Fig3.gif, 60KB / Fig3.pdf,-and-nbsp;448KB)
	Table 3.-and-nbsp; Description of Gordon Lake pollen percentages diagram. (Table3.gif, 49KB / Table3.pdf, 9KB) -and-nbsp;
	Figure 4.-and-nbsp; Pollen percentages for selected taxa during the late-glacial period at Gordon Lake. Open curves represent 5X exaggeration of black curves. Pollen zones were calculated using a constrained cluster analysis (CONISS; Grimm, 1988). (Fig4.gif, 55KB / Fig4.pdf, 370KB)

Figure 5.-and-nbsp; Submillennial changes in vegetation and the inferred climate during the late-glacial period at Little Lake and Gordon Lake.-and-nbsp; Variations in millennial-scale climatic controls in the Pacific Northwest during the late-glacial period are shown in the far right panel.-and-nbsp; July insolation anomaly (difference from present) from Berger (1978).-and-nbsp; Relative sea level curve is an estimate of changes in ice sheet volume (Fairbanks, 1989).-and-nbsp; Shaded area indicates the Younger Dryas period in North Atlantic.

(Fig5.gif, 39KB / Fig5.pdf, 49KB)

Figure 6.-and-nbsp; Late-glacial pollen percentages of Pinus and Pseudotsuga-type from sites in western Oregon and southern Washington.-and-nbsp; Dashed lines show the position of Zone LL-3a and Zone LL-3c.-and-nbsp; The start and end of the Younger Dryas period in the North Atlantic are also shown.

(Fig6.gif, 42KB / Fig6.pdf, 15KB)