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The purpose of this data set is to present karst-related sinkholes in Virginia, as mapped by the Virginia Division of Geology and Mineral Resources, in a digital format suitable for use in computerized mapping systems. It is intended to show, in a general sense, the distribution of karst-related sinkholes west of the Blue Ridge Mountains. This information will be useful to government agencies, planners, developers, teachers and students of Virginia's geology. The data set is not intended for site-specific use. Decisions requiring knowledge of the presence or absence of karst features at a specific location should not be based on this data set. |
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The purpose of this data set is to present karst-related sinkholes in Virginia, as mapped by the Virginia Division of Geology and Mineral Resources, in a digital format suitable for use in computerized mapping systems. It is intended to show, in a general sense, the distribution of karst-related sinkholes west of the Blue Ridge Mountains. This information will be useful to government agencies, planners, developers, teachers and students of Virginia's geology. The data set is not intended for site-specific use. Decisions requiring knowledge of the presence or absence of karst features at a specific location should not be based on this data set. |
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Virginia Division of Geology and Mineral Resources
Department of Mines, Minerals and Energy
Hubbard, D. A., Jr., 1983, Selected Karst Features of the Northern Valley and Ridge Province, Virginia: Virginia Division of Mineral Resources Publication 44, 1:250,000-scale map.
Hubbard, D. A., Jr., 1988, Selected Karst Features of the Central Valley and Ridge Province, Virginia: Virginia Division of Mineral Resources Publication 83, 1:250,000-scale map.
Hubbard, D. A., Jr., 2001, Selected Karst Features of the Southern Valley and Ridge Province, Virginia: Virginia Division of Mineral Resources Publication 167, 1:250,000-scale map. |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The data set was developed by the Virginia Division of Geology and Mineral Resources to depict areas of karst as defined by the presence of sinkholes. Sinkholes were identified from low-altitude stereoscopic aerial photo pairs and traced onto 1:24:000 paper topographic maps, from which they were table-digitized. This is the same data depicted at 1:250,000 scale in Division of Geology Mineral Resources Publications 44, 83, and 167. </SPAN><SPAN><SPAN>Field checking has revealed that many more sinkholes are present than are depicted in this dataset. Therefore, these data should serve as a general guide to areas of karst-related sinkhole development, and not as a true indication of the presence or absence of sinkholes at a particular location.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV> |
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Dataset copyright Commonwealth of Virginia, 2011. This dataset is provided as is. Errors arising from physical sources used to develop the data may be reflected in the data. It is designed for use at the designated scale and should not be enlarged or used for making site-specific decisions. Users must be aware of possible errors in scale, resolution, rectification, positional accuracy, development methodology, and other circumstances specific to this dataset when using information contained herein. Distribution of this map is intended for information purposes and should not be considered authoritative for navigational, engineering, legal, or other site-specific uses.. Users should be cautioned, however, that the presence or absence of sinkholes in this data set does not guarantee the presence or absence of sinkholes at a particular location in the real world. The data set should be used as a general indication of the presence of karst and its intensity. |
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Reconnaissance Mapping of Karst-related Sinkholes in Virginia |
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["sinkhole","karst","Virginia","limestone","dolomite","carbonate rocks","sinkhole","karst","limestone","dolomite","carbonate rocks"] |
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en-US |
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