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Paleo Slide Set: Packrat Middens: Vegetation & Climate Variability in the Southwestern United States
Allen Canyon Cave, [2200 m] in San Juan County, Utah.
At 2200 m in elevation on the south flank of the Abajo Mountains, southeastern Utah, Allen Canyon Cave is carved into the Navajo Sandstone. The modern vegetation is a patchwork of piņon-juniper woodlands on exposed slopes, with a dense stand of ponderosa pine, aspen, Douglas fir and Rocky Mountain maple directly in front of the cave. Eight middens from the site were radiocarbon dated and subsequently analyzed for macrofossil composition, yielding a picture of vegetation dynamics at the site over the past 11,300 years.

Photo Credits:
Julio Betancourt
U. S. Geological Survey
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Last Modified: 12 October 2001

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