Abstract
The karsted limestone valleys of central Pennsylvania contain two populations of sinkholes. Solution sinkholes occur in the Champlainian limestone units along the margins of the valleys. Solution sinkholes are permanent parts of the landscape and, although a nuisance to construction, do not present other problems. The second population is the suffosional or soil-piping sinkholes These occur on all carbonate rock units including the Beekmantown and Gatesburg dolomites that comprise the two principal carbonate aquifers in the valley. Suffosional sinkholes are the principal land-use hazard.
Suffosional sinkholes are transient phonomena. They occur naturally but are exacerbated by runoff modifications that accompany urbanization Suffosional sinkholes are typically 1.5–2.5 m in diameter depending on soil thickness and soil type. The vertical transport of soil to form the void space and soil arch that are the precursors to sinkhole collapse is through solutionally widened fractures and cross-joints and less often through large vertical openings in the bedrock. The limited solution development on the dolomite bedrock combined with soil thickness, seldom greater than 2 m, limits the size of the sinkholes. All aspects of suffosional sinkhole development are shallow processes: transport, piping, void and arch formation, and subsequent collapse take place usually less than 10 m below the land surface
Factors exacerbating sinkhole development include pavement, street, and roof runoff which accelerates soil transport Such seemingly minor activities as replacing high grass and brush with mowed grass is observed to accelerate sinkhole development. Dewatering of the aquifer is not a major factor in this region
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References Cited
Braker, W. L., 1981, Soil survey of Centre County, Pennsylvania: Soil Conservation Service, U.S. Department of Agriculture, 162 p.
Dayton, G. O., and W. B. White, 1979, The caves of Centre County, PA: Mid Appalachian Region, National Speleological Society Bull. 11, 126 p.
Foose, R. M., 1953, Ground water behavior in the Hershey Valley, Pennsylvania: Geol. Soc. Amer. Bull. v. 64, p. 623–645.
Foose, R. M., 1967, Sinkhole formation by groundwater with-drawal: Far West Rand, South Africa: Science, v. 157, p. 1045–1048.
Foose, R. M., and J. A. Humphreville, 1979, Engineering geological approaches to foundations in the Karst terrain of the Hershey Valley: Bull. Assoc. Eng. Geol., v. 16, p. 355–381.
Jennings, J. E., 1966. Building on dolomites in the Transvaal: Civil Eng. South Africa, v. 8, p. 41–62.
Lattman, L. H., and R. R. Parizek, 1964, Relationship between fracture traces and the occurrence of ground water in carbonate rocks: J. Hydrol., v. 2, p. 73–91.
Newton, J. G., and L. W. Hyde, 1971, Sinkhole problem in and near Roberts Industrial Subdivision, Birmingham, Alabama: Alabama Geological Survey Circ. 68, 42 p.
Newton, J. G., C. W. Copeland, and L. W. Scarbrough, 1973. Sinkhole problem along proposed route of Interstate Highway 459 near Greenwood, Alabama: Alabama Geological Survey Circ. 83, 63 p.
O'Neill, B. J., Jr. 1964, Atlas of Pennsylvania's mineral resources. Part 1. Limestones and dolomites of Pennsylvania: Pennsylvania Geological Survey Bull. M50, 40 p.
Parizek, R. R., W. B. White, and D. Langmuir, 1971, Hydrogeology and geochemistry of folded and faulted rocks of the central Appalachian type and related land use problems: The Pennsylvania State University, Earth and Mineral Sciences Expt. Stat. Circ. 82, 181 p.
Powell, W. J., and P. E. LaMoreaux, 1969, A problem of subsidence in a limestone terrane at Columbiana, Alabama: Alabama Geological Survey Circ. 56, 30 p.
White, E. L., and W. B. White, 1979, Quantitative morphology of landforms in carbonate rock basins in the Appalachian highlands. Geol. Soc. Amer. Bull., v. 90, p. 385–396.
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White, E.L., Aron, G. & White, W.B. The influence of urbanization of sinkhole development in central Pennsylvania. Environ. Geol. Water Sci 8, 91–97 (1986). https://doi.org/10.1007/BF02525562
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DOI: https://doi.org/10.1007/BF02525562