Reconnaissance Mapping of Karst-related Sinkholes in Virginia

20160321 09242400 FALSE 20151206 19540200 20151206 19540200 Karst 002 0.000 10866090.325191 11203732.971777 3528164.017349 3794671.143613 1 Projected GCS_North_American_1983 <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/10.3'><WKT>PROJCS["NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",11482916.66666666],PARAMETER["False_Northing",3280833.333333333],PARAMETER["Central_Meridian",-78.5],PARAMETER["Standard_Parallel_1",36.76666666666667],PARAMETER["Standard_Parallel_2",37.96666666666667],PARAMETER["Latitude_Of_Origin",36.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2284]]</WKT><XOrigin>-111140600</XOrigin><YOrigin>-91532100</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>0</ZOrigin><ZScale>1</ZScale><MOrigin>0</MOrigin><MScale>1</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102747</WKID><LatestWKID>2284</LatestWKID></ProjectedCoordinateSystem> Linear Unit: Foot_US (0.304801) NAD_1983_StatePlane_Virginia_South_FIPS_4502_Feet 1.0 ItemDescription ESRI ArcCatalog 9.3.1.1850 en 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. 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. 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. Virginia Department of Mines, Minerals and Energy; Division of Mineral Resources Unpublished Material Reconnaissance Mapping of Karst-related Sinkholes in Virginia sinkholesLL vector digital data withheld ground condition 2004 Complete None planned -83.623358 -77.819320 39.470552 36.592884 -83.623358 -77.819320 36.592884 39.470552 REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords. sinkhole karst Virginia limestone dolomite carbonate rocks sinkhole karst limestone dolomite carbonate rocks Virginia These data were developed by the Virginia Department of Mines, Minerals and Energy, Division of Mineral Resources. They are publically available. There are no legal restrictions to using these data. Users should be cautioned, however, that the presence or absence of sinkholes in this dataset does not guarantee the presence or absence of sinkholes at a particular location in the real world. The dataset should be used as a general indication of the presence of karst and its intensity. Shapefile 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., 2001, Selected Karst Features of the Southern Valley and Ridge Province, Virginia: Virginia Division of Mineral Resources Publication 167, 1:250,000-scale map. David Spears Virginia Department of Mines, Minerals and Energy State Geologist 434-951-6350 david.spears@dmme.virginia.gov Esri ArcGIS 10.3.0.4322 Reconnaissance Mapping of Karst-related Sinkholes in Virginia -83.623358 -77.81932 39.470552 36.592884 1 -83.623358 -77.81932 39.470552 36.592884 1 002 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. <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> 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. sinkhole karst Virginia limestone dolomite carbonate rocks sinkhole karst limestone dolomite carbonate rocks 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. 1 -80.632872 -79.456162 37.740680 36.993695 en FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time REQUIRED: The person responsible for the metadata information. REQUIRED: The organization responsible for the metadata information. REQUIRED: The mailing and/or physical address for the organization or individual. REQUIRED: The city of the address. REQUIRED: The state or province of the address. REQUIRED: The ZIP or other postal code of the address. REQUIRED: The telephone number by which individuals can speak to the organization or individual. 20100623 ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset Downloadable Data 18.673 18.673 002 withheld Local Area Network 18.673 Shapefile Feature Class 0.000 Vector Simple FALSE 0 TRUE FALSE NAD27 Lat/Long's, Degrees, -180 ==> +180 D_NAD27 Clarke - 1866 6378206.400000 294.978698 NAD27 Lat/Long's, Degrees, -180 ==> +180 EPSG 8.2.6 0 Karst Feature Class 0 OBJECTID_1 OBJECTID_1 OID 4 10 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. OBJECTID OBJECTID Integer 4 10 0 Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape_Leng Shape_Leng Double 8 38 8 Shape Shape Geometry 4 0 0 Feature geometry. ESRI Coordinates defining the features. Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 20151206