Bedrock Geology of Ontario, Dike Swarm - 1: 250 000 Coordinate system: 4269 - "NAD83" Abstract: This data set can be used to identify dikes, which are tabular bodies of igneous rock which have intruded pre-existing geological units near the Earth's surface. Dikes are therefore long linear bodies of igneous rock that can extend laterally for hundreds of kilometers with a width of perhaps a few hundred meters. Dikes normally occur, not as single dikes, but rather as several parallel dikes forming a dike swarm all of the same material which intruded at roughly the same time. The most common dike swarms in the Precambrian of Ontario are diabase dike swarms extending up to 3000 km in length which can form up to 30% of the Earth's crust at the center of the swarm. This data set is part of the Bedrock Geology Data Set, which is a Geological map of the Province and shows the distribution of bedrock units underlying Ontario. It illustrates geological rock types, major faults, iron formations, kimberlite intrusions, and dike swarms. The geology of the Province consists of Precambrian rocks of the Canadian Shield and Phanerozoic sedimentary rocks in basins that overlie the Canadian Shield. Based on differences in age, metamorphism and tectonic setting, the Precambrian rocks are subdivided into the Superior, Southern and Grenville provinces. The Phanerozoic rocks occur in four basins. Major faults and shear zones are also included. The legend is subdivided geochronologically in the Phanerozoic, but geochronometrically in the Proterozoic and Archean. The Archean rocks of the Superior Province are subdivided into lithologic units. Supracrustal units of the Southern Province and the Phanerozoic Eon are subdivided lithostratigraphically. The Grenville Province is subdivided into major tectonic blocks and within each block the legend is mainly lithologic, with only part of the supracrustal rock record subdivided into lithostratigraphic units. The dataset is an overview of this geology on a Provincial Compilation scale of 1:250 000 and it illustrates geological rock types, major faults, iron formations, kimberlite and dike swarms.

Additional Documentation

• Metadata Information

  Language: eng; CAN

  Last Update: 2013-08-30

  Other Maintenance Requirements:

  93e440dd-e1b6-4026-baa7-f017b0aa1984

  Metadata Contact:

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

  Contact Instructions:

  gis@scholarsportal.info

  Metadata Standard:

  North American Profile of ISO19115:2003 - Geographic Information

• Citation Information

  
  
  

  Series

  Name: Bedrock Geology of Ontario

  
  

  Ontario Ministry of Northern Development and Mines Sudbury Ontario, Canada

  Ontario Geological Survey Ontario, Canada

  Themes or Categories of the Resource: geoscientificInformation

  Keywords:

  GEOLOGICAL SURVEY, GEOLOGY, ARCHEAN BEDROCK GEOLOGY, BEDROCK GEOLOGY, DIKES, PALEOZOIC BEDROCK GEOLOGY, PRECAMBRIAN BEDROCK GEOLOGY, PROTEROZOIC BEDROCK GEOLOGY, MAPPING, GEOLOGY, TEACHING MATERIALS, EDUCATIONAL RESOURCES, GEOGRAPHIC INFORMATION SYSTEMS, GIS, PRECAMBRIAN BEDROCK COMPILATION MAPPING, OGS, ONTARIO GEOLOGICAL SURVEY, ERMES, MINES, MINERALS, MINERAL EXPLORATION, DIGITAL DATA, MINISTRY OF NORTHERN DEVELOPMENT AND MINES, MNDM, IGNEOUS, BEDROCK, DIGITAL MAPS, MRD, MRD126

  ROCKS, GEOLOGY, GEOMORPHOLOGY

  Geology, Géologie, Earth sciences, Sciences de la terre

  Place Keywords:

  Continent > North America > Canada > Ontario

  Purpose:

  To provide a detailed overview of bedrock geology in Ontario available to the mineral exploration and development community as well as government geoscientists and academic researchers. Also, the dataset will be of value to secondary school teachers, mineral collectors and members of the media and general public who have an interest in Ontario's geological history and mineral wealth.To enable the rapid dissemination of information, this map data is unedited. Discrepancies or inaccuracies may occur for which the Ontario Ministry of Northern Development and Mines does not assume liability. Users should verify critical information.This product is intended for use at scales of 1:250 000 and smaller. Use of this product at larger, detailed scales will result in use for which this product was never intended.

  Dataset Language: eng; CAN

  Status: completed

  Update Frequency: asNeeded

  Spatial Representation Type: vector

  Processing Environment:

  The geological compilation was created using a variety of programs including ArcInfo v.7, ArcGIS v8.x, ArcView 3.x, AutoCAD R2000, AutoCAD Map 2000, Geosoft Oasis Montaj v5, Feature Manipulation Engine (FME SR2000); ESRI ArcView 3.x shape files; Geophysical Data as GeoTIFF format.

  Extent

  West Longitude: -95.153411

  East Longitude: -75.416340

  North Latitude: 56.228858

  South Latitude: 44.140371

  
  

  Supplemental Information:

  Horizontal: Plus or minus 250 meters or 1/4 mile; Vertical: Not Applicable.

• Spatial Representation - Vector

  Geometric Objects:

  Object Type: composite

  Object Count: 17038

• Reference System Information

  Reference System Identifier

  Value: 4269

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

• Data Quality Information

  Scope Level: series

  To enable the rapid dissemination of information, this map data is unedited. Discrepancies or inaccuracies may occur for which the Ontario Ministry of Northern Development and Mines does not assume liability. Users should verify critical information. This product is intended for use at scales of 1:250 000 and smaller. Use of this product at larger, detailed scales will result in use for which this product was never intended.

  
  

  Process step:

  Geology Data Compiled from various sources.

  Ontario Geological Survey, Ministry of Northern Development and Mines: OGS and Various Geological Survey Publications: This geological map of Ontario was compiled at a scale of 1:1,000,000 mainly from maps and reports of the Ontario Geological Survey, the Geological Survey of Canada, and the Geological Surveys of Manitoba, Quebec, New York, Minnesota and Michigan. In addition, the compilation incorporated unpublished maps and reports on file with the Ontario Geological Survey, university theses, papers in professional journals, aeromagnetic maps, gamma ray spectrometric and gravity maps, aerial photographs and satellite images. Data collected from 01/01/1900 to 31/12/1988.

  Ontario Geological Survey/Data Services Section/Ministry of Northern Development and Mines: 1'=4 mile ERLIS Bedrock Geology: The995 ERLIS : 250 000 Bedrock compilation project digitized the original Geology of Ontario inch = 4 mile manuscript maps. These maps were digitized but features such as map edge discontinuities were not resolved. Data collected from 01/01/1995 to 31/12/1995. The original 1:1 000 000 Bedrock Geology of Ontario was originally compiled at scales approximating 1:250 000 (1:253 440). These manuscript maps were further generalized in the creation of the final cartographic products. The original manuscript maps contain more data and information than the final maps. They became the source compilation base for the province. Additional data such as the 1:100 000 Abitibi Compilation product were integrated into the 1:250 000 Bedrock Geology product.

  Ontario Geological Survey: Geological Compilation of the Timmins Area, MRD 36.: The Abitibi GIS Compilation Project. The Ontario Geological Survey compiled the geology of the Abitibi subprovince at a scale of: 100 000. MRD 36: Geological Compilation of the of the Timmins Area, Abitibi Greentone Belt (accompanies Pmap P.3379)

  Ontario Geological Survey: Geological Compilation of the Lake Abitibi Area: The Abitibi GIS Compilation Project. The Ontario Geological Survey compiled the geology of the Abitibi subprovince at a scale of:100 000. MRD 46 Geological Compilation of the Lake Abitibi Area, Abitibi Greentsone Belt (accompanies P.3398).

  Ontario Geological Survey: Geological Compilation of the Kirkland Lake Area: The Abitibi GIS Compilation Project. The Ontario Geological Survey compiled the geology of the Abitibi subprovince at a scale of: 100 000. MRD 58 Geological Compilation of the Kirkland Lake Area, Abitibi Greenstone Belt (accompanies P.3425).

  Ministry of Northern Development and Mines: The Ontario Drill Hole Database ERLIS Data Set 13 (ODHDB): The Ontario Drill Hole Database re-released November999. Data from this set have been simplified for easy integration as a theme into compilations. The Ontario Drill Hole Database was created through the Earth Resources Land Information System initiative in 1995. This original data set contained 105,000 drill holes. The database was updated in 1999 bringing the total number of holes to 112903.

  Ministry of Northern Development and Mines: ERLIS Data Set 6: Bedrock Geology: Seamless Coverage (GoO): Ontario Bedrock Geology: Seamless Coverage (1:1 000 000). The digital version of the Precambrian Geology of Ontario in a province wide seamless compilation. Precambrian geology for the Province of Ontario at 1:1 000 000.

  Natural Resources Canada/Geomatics Canada: National Topographic Database at 1:250 000 (NTDB): NTDB:250K, the federal government (Geomatics Canada) released a topographic digital base covering the Province of Ontario in entirety.

  Ministry of Northern Development and Mines: Data Sets 1035 and 1036 - Ontario Bouger Gravity and Aeromagnetic Data: Compiled geophysical data. The Ministry of Northern Development and Mines is released, in digital form, the Ontario Single Master Bouguer gravity and Aeromagnetic data for the Province of Ontario. The Single Master Aeromagnetic data was released earlier in digital form labeled ERLIS Dataset 1. The Bouguer Gravity Field of Ontario was compiled from approximately 55,639 gravity stations retrieved from the files of the Ontario Geological Survey (OGS) and the National Gravity Data Base of Geomatics Canada. The XYZ file of Bouguer Gravity data was used to create a 1000m by 1000m cell-size Bouguer gravity grid of Ontario. A 1000m by 1000m cell-size vertical gravity gradient grid of Ontario was also computed. The Bouguer Gravity XYZ values are provided in Microsoft(RegTM) EXCEL, ACCESS and ASCII text formats. In 1988-89, the OGS reprocessed and re-leveled forty one aeromagnetic surveys (thirty two, 0.5 mile flight line spacing digitized surveys and nine digitally acquired surveys, 1000 m flight line spacing), acquired between 1947 and 1987, flown by the OGS and the Geological Survey of Canada. Single Master 200 m by 200 m cell-size grids of the total field and its vertical gradient were computed and their colour images were released by the OGS, in the form of 1:1,000,000 colour maps. A CD-ROM containing magnetic XYZ and grid data was also released accompanied by a DOS(RegTM) based data viewing and manipulation software (ERLIS Dataset 1, March 1993). The magnetic data, contained on CD-ROM ERLIS Dataset 1 have been currently reformatted to take advantage of current operating systems.

  Ministry of Northern Development and Mines: Data Set 1037 - Ontario Magnetic Super Grids: The Ministry of Northern Development and Mines released magnetic supergrids for six regions in Ontario. These supergrids are part of the Aeromagnetic-Electromagnetic (AMEM) project where thirty-two magnetic and electromagnetic surveys were reprocessed and individual total magnetic field and magnetic second vertical derivative grids were computed.

• Distribution Information

  Distributor:

  Ontario Geospatial Data Exchange, Ministry of Natural Resources Peterborough Ontario, Canada