Ministry of Mines
Publication: GDS1251
Title: Ontario Airborne Geophysical Surveys, Magnetic and Gravimetric Data, Grid and Profile Data (ASCII and Geosoft® Formats) and Vector Data, Mozhabong Lake Area
Publication Year: 2021
Type: Digital data
Author(s): Ontario Geological Survey
Series: Geophysical Data Set
Type: Digital data
Price: $25.00
Township or Area: ASSEF, AVIS, BEEBE, DEL VILLANO, DURBAN, ETHEL, FONTAINE, FOUCAULT, GERVAIS, HOTTE, JASPER, MONESTIME, OLINYK, OSHELL, REDDEN
NTS Number: 41J09, 41J16, 41O01
Topic: Airborne magnetic (type unknown), Geophysics, general
Abstract: As part of an ongoing program to acquire high-quality, high-resolution airborne geophysical data across the Province of Ontario, the Ministry of Northern Development, Mines, Natural Resources and Forestry does, from time to time, acquire existing proprietary data. The geophysical data that comprise this survey were kindly donated by Nuclear Waste Management Organization (NWMO).
Geophysical Data Set (GDS) 1251 includes the results of an airborne magnetic and gravity survey, totalling 10,057 line-kilometres, flown over the Mozhabong Lake area of northeastern Ontario, approximately 50 km north-northeast of the community of Elliot Lake, Ontario. The survey covered an area of 974 square kilometres. The survey was conducted in 2016 to 2017 by Sander Geophysics Ltd., Ottawa, Ontario, for the Nuclear Waste Management Organization, Toronto, Ontario.
This geophysical data set includes 1) 20 m × 20 m grids and GeoTIFF images of the magnetic and gravity data and derivatives; 2) airborne magnetic and gravimetric profile data—both raw and processed—in ASCII (.xyz) and Geosoft® (.gdb) file formats; 3) grids (in ASCII (.gxf) and Geosoft® (.grd) file formats) of the magnetic and gravity data and derivatives; 4) database of Keating correlation coefficient anomalies in ASCII (.csv) and Geosoft® (.gdb) file formats; 5) database of magnetic profile data in ASCII (.xyz) and Geosoft® (.gdb) file formats; 6) database of gravimetric profile data in ASCII (.xyz) and Geosoft® (.gdb) file formats; 7) vector (.dxf) files of flight path, magnetic and gravity contours, and Keating correlation coefficient anomalies; and 8) survey report in portable document format (.pdf).
Survey Parameters:
Survey type: magnetic and gravity
Dates flown: April 27, 2016 to March 2, 2017
Survey conducted by: Sander Geophysics Ltd., Ottawa, Ontario
Survey conducted for: Nuclear Waste Management Organization, Toronto, Ontario
Survey size: 10,057 line-kilometres
Survey area: 974 square kilometres
Traverse-line orientation: north-south
Traverse flight-line spacing: 100 m
Control-line orientation: east-west
Control-line spacing: 500 m
Nominal aircraft terrain clearance: 70 m
Magnetic survey type: single sensor
Magnetometer type: cesium split beam
Magnetometer sensor location: tail stinger
Magnetic sampling interval: 10 readings per second
EM survey type: N/A
EM domain: N/A
EM height: N/A
VLF–EM: none
Gamma-ray survey: none
Gravity survey: vertical component
Gravity survey type: Sander Geophysics Ltd. AIRGrav
Gravity initial sampling interval: 10 readings per second
These data accompany geophysical Maps 60516 to 60535, which are available separately from the digital data set.
Purpose: Airborne geophysics is an integral part and core function of the Ontario Geological Survey’s (OGS) geoscience activities. This magnetic and gravimetric survey was acquired as part of the Ontario Geological Survey’s Precambrian bedrock geology mapping program to provide high-quality and high-resolution geophysical data to help better define geological features, and to assist in mapping the geology of the area.
Keywords: Airborne Magnetic (Total):Airborne Magnetic (Residual):Airborne Gravity:Airborne Gravity (Vertical Component):Geophysical:Geophysics, General:High Resolution Total Field Magnetics:Residual Magnetic Field:Residual Total Magnetic Field
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Ministry of Mines
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