| - General - |
| Geofile: | NFLD/3383 |
| Companies: | Geological Survey of Newfoundland and Labrador |
| Contractor: | Sander Geophysics Ltd. |
| Survey Area: | Twillick Brook, Nfld. |
| NTS Areas: | 02D/04; 01M/13; 01M/14; 02D/03; 02D/05 |
|
| - Survey Logistics - |
| Survey Date: | Oct. 17 to Nov. 10, 2019 |
| Block: | Twillick Brook |
| Survey Extent: | ?.? line km; ?.? km Tie (?+?); 9899 km Total |
| Altitude: | Cessna 208B Grand Caravan (C-GSGL): 90 m |
| Line Spacing: | 150 m, Az: 135°; Ties: 1000 m, Az: 045° |
| Positioning: | Novatel OEM4/OEMV-3 GPS system, providing differential GPS - to OEM4/OEMV-3 receivers at base; Bendix King KRA 10A/ERT-530A radar altimeter; Honeywell THE barometric altimeter with Vaisala relative humidity sensor; Renishaw PLC range finder laser altimeter; Sander Geophysics SGDIS vertically mounted digital flight path imaging system |
| Instrumentation: | Three Geometrics G-822A split-beam cesium vapour magnetometers mounted in aircraft wingtip pods (transverse gradient) and tail boom (longitudinal gradient); Billingsley TFM100G2-1E ThreeAxis flux-gate sensor magnetic field compensation system; Sander Geophysics SGLSpec gamma-ray spectrometer with 3 SGX-3/5 crystal detector packs, providing 1024 channel output; Totem 2A 2-frequency VLF-EM; Geometrics Systems G-822A split-beam cesium vapour base station mag; Sander Geophysics digital data acquisition systems (air & ground) |
| Data Recorded: | Total field mag; horizontal gradient mag; 512 channel gamma-ray spectrometry; 2-frequency VLF-EM, total field and quadrature |
|
| - Digital Data - |
| Date Submitted: | February 25, 2020 |
| Confidentiality Date: | March 3, 2020 |
| Grid Cell Size: | 35 m |
| Projection of Data: | NAD83, UTM Zone 21 |
| Links to Data: |
| Contractor logistics and processing report (PDF format, 1.9 Mb zip'd) |
| Profile archive - Mag, VLF & DEM, Geosoft database format (335 Mb zip'd (pending)) |
| Profile archive - Radiometric, Geosoft database format (78 Mb zip'd) |
| Interpolated grids, Mag & DEM, Geosoft format, NAD83 (38.6 Mb zip'd) |
| Interpolated grids, Radiometric, Geosoft format, NAD83 (24.5 Mb zip'd) |
| Interpolated grids, VLF, Geosoft format, NAD83 (15.9 Mb zip'd) |
|
| GIS Layers: |
| Survey flight paths, Shapefile format (2 m resolution, NAD83, UTM Zone 21N, zip'd) |
| Colour, shaded relief Magnetic & DEM images, NAD83 (10 m resolution, 150 Mb zip'd) |
| Colour, shaded relief Radiometric images, NAD83 (10 m resolution, 123 Mb zip'd) |
| Colour, shaded relief VLF images, NAD83 (10 m resolution, 79 Mb zip'd) |
| Mag RMI Map, GeoTiff format (NAD83, 160 Mb zip'd) |
| Mag 1VD Map, GeoTiff format (NAD83, 157 Mb zip'd) |
| Rad K_% Map, GeoTiff format (NAD83, 154 Mb zip'd) |
| Rad U_ppm Map, GeoTiff format (NAD83, 157 Mb zip'd) |
| Rad Th_ppm Map, GeoTiff format (NAD83, 154 Mb zip'd) |
| Rad Th/K_Ratio Map, GeoTiff format (NAD83, 155 Mb zip'd) |
| Rad U/K_Ratio Map, GeoTiff format (NAD83, 158 Mb zip'd) |
| Rad U/Th_Ratio Map, GeoTiff format (NAD83, 159 Mb zip'd) |
| Rad TotCount_DoseRate, GeoTiff format (NAD83, 153 Mb zip'd) |
| Rad Ternary Map, GeoTiff format (NAD83, 154 Mb zip'd) |
| VLF1 Total_Field Map, GeoTiff format (NAD83, 154 Mb zip'd) |
| VLF2 Total_Field Map, GeoTiff format (NAD83, 154 Mb zip'd) |
| VLF1/VLF2 Quadrature Map, GeoTiff format (NAD83, 163 Mb zip'd) |
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