Ontario Drill Hole Database Coordinate system: 26915 - "NAD83 / UTM zone 15N" Abstract: The Ontario Drill Hole Database (ODHD) can be used to identify drill holes in Ontario and contains information for over 141,000 percussion, overburden, sonic and diamond-drill holes. Data include location, company name, company hole number, hole orientation, hole depth, and overburden depth if applicable. Data are provided in two formats in this release: a relational database, and a seamless ODHD provincial coverage in a geospatial GIS (ESRI® shape file) format The complete ODHD relational database is provided in Microsoft® Access® 2007/2010 (.accdb) format. Supplementary data is available for download from the additional documentation section. The supplementary data contains Microsoft® Access® and KML data formats.

Additional Documentation

• Metadata Information

  Language: eng; CAN

  Last Update: 2014-04-17

  Other Maintenance Requirements:

  Metadata was created using metadata supplied by the Ontario Ministry of Northern Development and Mines.

  Metadata Contact:

  Scholars Portal, Ontario Council of University Libraries Toronto Ontario, Canada

  Contact Instructions:

  gis@scholarsportal.info

  Metadata Standard:

  North American Profile of ISO 19115 Geographic Information Metadata

• Citation Information

  
  

  Ontario Ministry of Northern Development and Mines Sudbury Ontario, Canada

  Ontario Geological Survey Ontario, Canada

  Themes or Categories of the Resource: geoscientificInformation

  Keywords:

  DRILL HOLE, DRILL METHODS, DRILLS, DRILLING, DIAMOND DRILL HOLE, OVERBURDEN DRILL HOLE, PERCUSSION DRILL HOLE, REVERSE CIRCULATION, UNDERGROUND DRILLING, WEDGED DIAMOND DRILL HOLE, PERCUSSIVE, GEOLOGY, MINERALS, MINES, MINING, Drillhole, open data

  GEOLOGY, MINERAL CONTENT, MINING

  Drilling, Forage, Geology, Géologie, Mining industry, Industrie minière, Minerals, Minerai

  Place Keywords:

  Continent > North America > Canada > Ontario

  Purpose:

  The Ontario Drill Hole Database is a digital geoscience database providing information about exploration drill holes within the province of Ontario. The database will assist exploration companies in their efforts to locate new deposits and allow research within the Province of Ontario through effective access to drill hole records in Ontario. The objective of this product is to collect and disseminate geoscience information for Ontario.

  Dataset Language: eng; CAN

  Status: completed

  Update Frequency: notPlanned

  Spatial Representation Type: vector

  Extent

  West Longitude: -95.411831

  East Longitude: -75.80000

  North Latitude: 54.920622

  South Latitude: 44.220753

  
  

  Supplemental Information:

  The Ontario Drill Hole Database resides on ORACLE® relational database management system; the drill hole locations are handled by ESRI® ArcGIS® geographic information system software. Geospatial data are provided in North American Datum 1983 (NAD83) geographic co-ordinate system using Geodetic Reference System 1980 (GRS80). Horizontal Position Accuracy of Features: Drill hole collars are not typically surveyed for precise location; therefore, the degree of accuracy as to the location of a drill hole is dependent upon the source document that was submitted to the MNDM. Each original source has a perceived level of accuracy and this is registered as a field within the Database. The levels of accuracy are as follows: holes are centred on a mining claim as this is the only information available; hole location derived from sketch map of mining claim; location derived from digitizing from a 1:50,000 scale plot of the 1:250,000 scale Energy, Mines and Resources (EMR) maps; location derived from a detailed company map or the location information for the drill hole is from the submitted Report of Work. No numeric value has been defined for locational error. Vertical Position Accuracy of Features: Not Applicable.

• Spatial Representation - Vector

  Geometric Objects:

  Object Type: point

  Object Count: 141783

• Reference System Information

  Reference System Identifier

  Value: 26915

  Code Space: http://www.epsg-registry.org/

• Data Quality Information

  Scope Level: dataset

  This release includes drill holes for which information was received by March 31, 2013, adding more than 15 000 new drill holes since the last release (ERLIS Data Set 13—Revision 1, December 2005). A number of data and location errors have also been corrected. This release supersedes all previous releases. Ontario drill hole data are compiled from assessment files. The Ontario Drill Hole Database was originally created from the archive of hard-copy assessment files that were converted to digital format in the Assessment File Research Image Database (AFRI) project. The AFRI database contains technical results from exploration programs conducted by exploration companies and individuals and filed with the Ministry in compliance with the Ontario Mining Act. Typically assessment files contain reports and maps for airborne and ground geophysical surveys, geological and geochemical data, and drilling information.

  
  

  Ministry of Northern Development and Mines with information submitted from various exploration companies and individuals: Assessment File Research Image Database (AFRI): The Assessment File Research Image Database contains mainly submissions of geological exploration surveys carried out by exploration companies and individuals filed with the Ministry in compliance with the Ontario Mining Act. Assessment file content is not homogeneous. Different series of Assessment files represent different source material, and different time periods.

• Distribution Information

  Distributor:

  Ontario Ministry of Northern Development and Mines Sudbury Ontario, Canada