Driftless Area

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.

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Although the glacial outwash drainage system in the driftless area cut deeply into the Ordovician and Cambrian beds of western Wisconsin and extreme eastern Minnesota, removing major thicknesses of overburden from most of the frac sand mining area, relict glacial outwash deposits obscure portions of the river valleys (Runkel and Steenberg, 2012).

Frac sand sources in the United States

Thursday: Trout Unlimited meeting: The Driftless Area with Larry Bush, 6 p.m.

Schwann man and other tips for Montana survival

Schultz</b> lives in the Driftless area of Wisconsin.

Contributors

Wildlife in the Driftless Area is subject to habitat damage from soil erosion, sedimentation, filling of sinkholes, and degradation of water quality.

Tribal land habitat restoration through partnerships

The study area (Figure 1) is located in the Western Corn Belt Plains and Driftless Area ecoregions (Omernik and Gallant, 1988) in southeast Minnesota and contains 8,339 mapped sinkholes (Gao et al., 2002).

Water quality in relation to vegetative buffers around sinkholes in karst terrain

Instead, the fearless animals holed up in southwestern Wisconsin's Driftless Area, a region nearly surrounded by ice.

Chillin' chipmunks

Late Pleistocene (Woodfordian) vertebrates from the Driftless area of Southwestern Wisconsin, the Moscow Fissure local fauna.

Pleistocene vertebrates from the pre-late Wisconsinan Mill Creek site, St. Clair County, Michigan

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).

Predicting the risk of lyme disease: habitat suitability for Ixodes scapularis in the North Central United States. (Research)

Final report (contract number 30181-1259) northern Driftless Area survey.

Paleorefugia and Neorefugia: The Influence of Colonization History Pattern and Process

Crop rotations and nitrogen: crop sequence comparisons on soil of the driftless area of southwestern Wisconsin, 1967-1974.

Corn and soil fertility responses to crop rotation with low, medium, or high inputs

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.

Holocene paleoenvironments of northeast Iowa

Because Jo Daviess County lies within the Driftless Area of the upper Midwest, it was spared the last advance of Ice Age glaciers that flattened the surrounding land.