Geology and sinkhole development of the Hagerstown Valley : phase II summary report.
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2014-06-01
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Abstract:As a part of this study, karst areas of the Hagerstown, Mason Dixon, Williamsport, Clear Spring, and Hedgesville ; quadrangles (western half of the Hagerstown Valley) were mapped in detail to determine the distribution of karst ; features relative to bedrock geologic units using a global positioning system. More than 2,100 karst features were ; identified and located and the following observations were made: ; There was a generally identifiable relationship between the type of karst features and the bedrock units. ; In addition to bedrock composition, joints, and faults appear to have played important roles in the ; development of the karst systems in the study area. ; Preliminary findings suggest the impact of human activities on karst development is less pronounced than in ; the Frederick Valley. ; Unlined drainageways appear to just as frequent culprits in sinkhole activity as they are in the Frederick ; Valley. Likewise, areas surrounding quarries and stormwater runoff ponds are common sites of sinkhole ; development. ; This study illustrates that future development will benefit from the current studies of karst development in the ; Hagerstown Valley. Planners can now employ the relative karst susceptibility on the different rock units as a basis ; for preliminary examination of areas of the Valley that are underlain by these soluble rocks.
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Main Document Checksum:urn:sha256:ab24e700018e6e6b174ad451f448e681f19c5a99ffa2f3a9d01f0de9987d3e67