README for Indiana Geological and Water Survey Bedrock Geologic Map of the Southern Half of the Knox 30- X 60-Minute Quadrangle, Indiana TITLE: Bedrock Geologic Map of the Southern Half of the Knox 30- X 60-Minute Quadrangle, Indiana By Patrick I. McLaughlin, Alyssa M. Bancroft, and Matthew R. Johnson ABSTRACT: The Bedrock Geologic Map of the Southern Half of the Knox 30- X 60-Minute Quadrangle is an Esri File Geodatabase that contains six feature data sets, five geodatabase tables, and two raster datasets detailing the bedrock geology of the southern half of the Knox 30- X 60-minute quadrangle in Indiana. This data set conforms to "GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps." For more information on GeMS please refer to the supplemental information within this metadata. PURPOSE: The Bedrock Geologic Map of the Southern Half of the Knox 30- X 60-Minute Quadrangle was created to provide digital access to the bedrock geology of southern half of the Knox quadrangle in northern Indiana. This geodatabase presents basic bedrock geological information that contributes to the characterization of potential mineral resources and bedrock aquifer systems. The data are synthesized from archived public domain geological data obtained from many different sources, original data obtained from fieldwork conducted by the authors, and contract drilling supported by project funds. Archive data sources include petroleum-well records, water-well records, refraction seismic surveys, and the geological literature. Project data includes measurements from quarry exposures, drill cores, drill cuttings, geophysical logs, chemostratigraphic analysis via portable X-ray fluorescence and stable isotope ratio mass spectrometry, conodont biostratigraphy, and horizontal-to-vertical spectral ratio geophysical surveys. This database is, in large part, the result of a cooperative mapping agreement between the U.S. Geological Survey (USGS) and the Indiana Geological and Water Survey through the STATEMAP program of the USGS. SUPPLEMENTARY INFORMATION: The Bedrock Geologic Map of the Southern Half of the Knox 30- X 60-Minute Quadrangle is a composite geodata set that conforms to "GeMS (Geologic Map Schema)--a standard format for the digital publication of geologic maps," available at http://ngmdb.usgs.gov/Info/standards/GeMS/. Metadata records associated with each element within the geodata set contain more detailed descriptions of their purposes, constituent entities, and attributes. An OPEN shapefile versions of the data set is also available. It consists of shapefiles, DBF files, and delimited text files and retains all information in the native geodatabase, but some programming will likely be necessary to assemble these components into usable formats. These metadata were prepared with the aid of script GeMS_FGDC1_Arc10.py, version of 20 July 2020. PROJECTION AND DATUM: All data is in North American Datum 1983 with Universal Traverse Mercator (UTM) projection, zone 16, North. ARCGIS PRO MAP DOCUMENT: bedrock_southern_knox_in_100k.aprx (ArcGIS Pro 2.7.0) SUPPLEMENTAL BASEMAP GEODATABASE: knox100kBase.gdb (Geodatabase) GEMS VALIDATION FILES: bedrock_southern_knox_in_100k_Validation (Folder) GEMS GEODATABASES: The GeMS compliant database contents are described below. bedrock_southern_knox_in_100k.gdb......................................(Geodatabase) ================================================================================= GeologicMap.............................................(Feature data set) ========================================================================= ArchiveBedrockPoints....................................(Polyline feature class with FGDC-compliant metadata) ContactsAndFaults.......................................(Polyline feature class with FGDC-compliant metadata) CoreLogCuttings.........................................(Polyline feature class with FGDC-compliant metadata) IsoValueLines...........................................(Polyline feature class with FGDC-compliant metadata) MapUnitPolys............................................(Polygon feature class with FGDC-compliant metadata) TrominoPoints...........................................(Points feature class with FGDC-compliant metadata) ========================================================================== DataSources.............................................(Non-spatial table with FGDC-compliant metadata) DescriptionOfMapUnits...................................(Non-spatial table with FGDC-compliant metadata) GeoMaterialDict.........................................(Non-spatial table with FGDC-compliant metadata) Glossary................................................(Non-spatial table with FGDC-compliant metadata) MapInformation..........................................(Non-spatial table with FGDC-compliant metadata) ========================================================================== KnoxBedrockSurface......................................(Raster data set with FGDC-compliant metadata) KnoxUnconsolidatedThickness.............................(Raster data set class with FGDC-compliant metadata) METADATA: Metadata files are valid for both the geodatabase feature classes and open-access shapefiles. ================================================================================= ArchiveBedrockPoints.xml.................................(Feature class level FGDC-compliant metadata) ContactsAndFaults.xml....................................(Feature class level FGDC-compliant metadata) CoreLogCuttings.xml......................................(Feature class level FGDC-compliant metadata) MapUnitPolys.xml.........................................(Feature class level FGDC-compliant metadata) TrominoPoints.xml........................................(Feature class level FGDC-compliant metadata) IsoValueLines.xml........................................(Feature class level FGDC-compliant metadata) DataSources.xml..........................................(Non-spatial table FGDC-compliant metadata) DescriptionOfMapUnits.xml................................(Non-spatial table FGDC-compliant metadata) GeoMaterialDict.xml......................................(Non-spatial table FGDC-compliant metadata) Glossary.xml.............................................(Non-spatial table FGDC-compliant metadata) MapInformation.xml.......................................(Non-spatial table FGDC-compliant metadata) KnoxBedrockSurface.xml...................................(Raster dataset FGDC-compliant metadata) KnoxUnconsolidatedThickness.xml..........................(Raster dataset FGDC-compliant metadata) OPEN-ACCESS VERSIONS: To improve access to this product, open-access and simple version folders of these data are included with this release. Some field names may have been truncated when converting from geodatabase feature classes to shapefiles. These files are available as a single zipped folder (bedrock_southern_knox_in_100k_OPEN.gdb.zip) ================================================================================= ArchiveBedrockPoints.shp.................................(Points feature class with FGDC-compliant metadata) ContactsAndFaults.shp....................................(Polyline feature class with FGDC-compliant metadata) CoreLogCuttings.shp......................................(Points feature class with FGDC-compliant metadata) MapUnitPolys.shp.........................................(Polygon feature class with FGDC-compliant metadata) TrominoPoints.shp........................................(Points feature class with FGDC-compliant metadata) IsoValueLines.shp........................................(Polyline feature class with FGDC-compliant metadata) KnoxBedrockSurface.xml...................................(Raster data set with FGDC-compliant metadata) KnoxUnconsolidatedThickness.xml..........................(Raster data set with FGDC-compliant metadata) ================================================================================= DataSources.txt..............................................(Non-spatial table) DescriptionOfMapUnits.txt....................................(Non-spatial table) Glossary.txt.................................................(Non-spatial table) MapInformation.txt...........................................(Non-spatial table) GeoMaterialDict.txt..........................................(Non-spatial table) ================================================================================= DataSources.dbf..............................................(Non-spatial table) DescriptionOfMapUnits.dbf....................................(Non-spatial table) Glossary.dbf.................................................(Non-spatial table) MapInformation.dbf...........................................(Non-spatial table) GeoMaterialDict.dbf..........................................(Non-spatial table)