Brief description
The Geological Survey of South Australia (GSSA) designed the Gawler Craton Airborne Survey (GCAS) to provide high resolution magnetic, gamma-ray and elevation data covering the northern portion of the Gawler Craton. In total, 1.66 million line km were planned over an area of 295,000 km2 , covering approximately 30% of the state of South Australia. The survey design of 200 m spaced lines at a ground clearance of 60 m can be compared with the design of existing regional surveys which generally employed 400 m line spacing and a ground clearance of 80 m. The new survey design results in ~2 x the data coverage and ~25% closer to the ground when compared to previous standards for regional surveys in South Australia. Due to the enormous scale of the survey, the data were acquired using four contractors who employed ten systems to fly the sixteen blocks. To standardise the data from the multitude of systems, Geoscience Australia (GA) employed a comprehensive set of technical specifications. As part of these specifications the contractors were required to fly each of the ten systems over a series of test lines termed the “Whyalla Test Lines” (Whyalla). The final GCAS data provide truly impressive high resolution regional scale products. These will allow more detailed geological interpretation of the prospective Gawler Craton. Survey blocks available for download include: Tallaringa North, block 1A Tallaringa South, block 1B Coober Pedy West, block 8A Billa Kalina, block 8B Childara, block 9A Lake Eyre, block 10 The following grids are available in this download: • Laser-derived digital elevation model grids (m). Height relative to the Australian Height Datum. • Radar-derived digital elevation model grids (m). Height relative to the Australian Height Datum. • Total magnetic intensity grid (nT). • Total magnetic intensity grid with variable reduction to the pole applied (nT). • Total magnetic intensity grid with variable reduction to the pole and first vertical derivative applied (nT/m). • Dose rate concentration grid (nGy/hr). • Potassium concentration grid (%). • Thorium concentration grid (ppm). • Uranium concentration grid (ppm). • NASVD processed dose rate concentration grid (nGy/hr). • NASVD processed potassium concentration grid (%). • NASVD processed thorium concentration grid (ppm). • NASVD processed uranium concentration grid (ppm). The following point located data are available in this download: • Elevation. Height relative to the Australian Height Datum. Datum: GDA94 • Total Magnetic Intensity. Datum: GDA94 • Radiometrics. Datum: GDA94Lineage
Maintenance and Update Frequency: asNeededNotes
PurposePoint located and gridded aeromagnetic, radiometric and digital elevation model data.
Created: 12 2019
Issued: 09 12 2019
Data time period: 2017-01-19 to 2019-06-25
text: westlimit=131.00; southlimit=-32.665; eastlimit=138.00; northlimit=-27.35; projection=GDA94 / MGA zone 53 (EPSG:28353)
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Project description (pdf) [914 KB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_36_1.pdf
P1300 GCAS 8b Billa Kalina elevation located data [665 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_00_1.zip
P1300 GCAS 8b Billa Kalina magnetics located data [909 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_01_1.zip
P1300 GCAS 8b Billa Kalina radiometrics located data [68 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_02_1.zip
P1300 GCAS 8b Billa Kalina elevation grids [68 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_03_1.zip
P1300 GCAS 8b Billa Kalina magnetics grids [107 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_04_1.zip
P1300 GCAS 8b Billa Kalina radiometrics grids [261 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_05_1.zip
P1301 GCAS 9a Childara elevation located data [963 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_06_1.zip
P1301 GCAS 9a Childara magnetics located data [1.4 GB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_07_1.zip
P1301 GCAS 9a Childara radiometrics located data [99 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_08_1.zip
P1301 GCAS 9a Childara elevation grids [102 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_09_1.zip
P1301 GCAS 9a Childara magnetics grids [161 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_10_1.zip
P1301 GCAS 9a Childara radiometrics grids [395 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_11_1.zip
P1299 GCAS 8a CooberPedy elevation located data [640 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_12_1.zip
P1299 GCAS 8a CooberPedy magnetics located data [921 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_13_1.zip
P1299 GCAS 8a CooberPedy radiometrics located data [67 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_14_1.zip
P1299 GCAS 8a CooberPedy elevation grids [67 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_15_1.zip
P1299 GCAS 8a CooberPedy magnetics grids [108 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_16_1.zip
P1299 GCAS 8a CooberPedy radiometrics grids [263 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_17_1.zip
P1302 GCAS 10 Lake Eyre elevation located data [419 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_18_1.zip
P1302 GCAS 10 Lake Eyre magnetics located data [625 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_19_1.zip
P1302 GCAS 10 Lake Eyre radiometrics located data [48 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_20_1.zip
P1302 GCAS 10 Lake Eyre elevation grids [44 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_21_1.zip
P1302 GCAS 10 Lake Eyre magnetics grids [65 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_22_1.zip
P1302 GCAS 10 Lake Eyre radiometrics grids [153 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_23_1.zip
P1297 GCAS 1a Tallaringa Nth elevation located data [712 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_24_1.zip
P1297 GCAS 1a Tallaringa Nth magnetics located data [999 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_25_1.zip
P1297 GCAS 1a Tallaringa Nth radiometrics located data [74 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_26_1.zip
P1297 GCAS 1a Tallaringa Nth 1A elevation grids [68 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_27_1.zip
P1297 GCAS 1a Tallaringa Nth magnetics grids [107 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_28_1.zip
P1297 GCAS 1a Tallaringa Nth radiometrics grids [262 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_29_1.zip
P1298 GCAS 1b Tallaringa Sth elevation located data [1.0 GB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_30_1.zip
P1298 GCAS 1b Tallaringa Sth magnetics located data [1.4 GB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_31_1.zip
P1298 GCAS 1b Tallaringa Sth radiometrics located data [106 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_32_1.zip
P1298 GCAS 1b Tallaringa Sth elevation grids [110 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_33_1.zip
P1298 GCAS 1b Tallaringa Sth magnetics grids [168 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_34_1.zip
P1298 GCAS 1b Tallaringa Sth radiometrics grids [421 MB]
uri :
https://d28rz98at9flks.cloudfront.net/132176/132176_35_1.zip
- global : cf49f698-ac05-446b-8f50-93edb592864a
- URI : pid.geoscience.gov.au/dataset/ga/132176
- DOI : 10.26186/5DED9C897793A