Driftless Area


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Driftless Area,

c.13,000 sq mi (33,670 sq km), largely in SW Wis. but extending into SE Minn., NE Iowa, and NW Ill. The continental glacier which covered most surrounding regions did not touch this area, which abounds in caves and sinkholes and has residual, well-drained soil. Because it was an important lead-mining region, the federal government prohibited farming in the Driftless Area until the 1840s. It was then settled by European immigrants.
References in periodicals archive ?
However, the contribution of pollutant loads to streams could be significant because about 80 percent of the base flow in many streams in the Driftless Area Ecoregion is derived from springs and seeps (Troelstrup and Perry, 1989).
The Driftless Area probably had forest patches where the chipmunks could survive until the glaciers receded (melted back)," says Hooyer.
Late Pleistocene (Woodfordian) vertebrates from the Driftless area of Southwestern Wisconsin, the Moscow Fissure local fauna.
In Wisconsin, positive high-density sites were found in the southwestern driftless area and in the central sandy uplands, as well as in the well-recognized northwest part of the state (and across the state line into Minnesota).
Final report (contract number 30181-1259) northern Driftless Area survey.
Crop rotations and nitrogen: crop sequence comparisons on soil of the driftless area of southwestern Wisconsin, 1967-1974.
The paleoecology of Iowa, southern Wisconsin, and Illinois is important in understanding paleoenvironments of the Midwest because (1) many taxa that were forced south during glaciation moved through these regions to their present position following deglaciation; (2) the paleoecology of the Driftless Area south into much of Illinois and eastern Iowa is poorly known; and (3) the axis of the "Prairie Peninsula" (Transeau 1935) runs through this region.
This section of the UMR flows through the heart of the Driftless Area (Bailey et al, 1994), a landscape of deeply carved valleys with steep slopes that was not glaciated during the Wisconsin ice age (Curtis, 1959).
Wisconsin's Driftless Area, where Buffalo County lies, wasn't affected by glaciers, meaning erosion didn't move the nutrients out of the soil like in glaciated areas.
In Illinois, the species is considered rare (Smith, 1979) and has been found only in a few of the streams of the Wisconsin Driftless Area (e.
Of special note is the ancient landscape of the Driftless Area which is devoid of glacial evidence.
Scientists think -- in the Driftless Area may have been safe homes for chipmunks during the last ice age.