The Gamma-Ray Spectrometric Method for Mineral Exploration and Environmental Mapping

Australian Institute of Geoscientists > Events > ASEG, exploration, gamma-ray spectrometry, geophysics, mapping > The Gamma-Ray Spectrometric Method for Mineral Exploration and Environmental Mapping

The Gamma-Ray Spectrometric Method for Mineral Exploration and Environmental Mapping


ASEG presents another course in its Australian Specialist’s Travelling Education Programme (OzSTEP)

The Gamma-Ray Spectrometric Method for Mineral Exploration and Environmental Mapping

8 CPD hours

Instructor: Brian Minty:

Brian Minty graduated from Rhodes University (BSc) in 1976 with majors in mathematics and physics. He then received a BSc (Hons) (1977) in geophysics from the University of the Witwatersrand, an MSc (Cum Laude, 1982) in exploration geophysics from the University of Pretoria, and a PhD (1997) from the Australian National University.

Early in his career, Brian worked for the Geological Survey of South Africa (1977-1981), and Hunting Geology and Geophysics (1982-1986). In South Africa he worked on airborne surveys targeting uranium, and it was during this period that he developed a life-long interest in airborne geophysics and, in particular, the gamma-ray spectrometric method. In 1986 he joined Geoscience Australia, and soon found himself in a research role. He has published techniques for mapping cesium fallout, the micro-levelling of airborne magnetic data, the estimation of atmospheric radon background, and the multichannel processing of airborne gamma-ray spectrometric data. He also developed a methodology for the automatic merging of gridded airborne geophysical survey data.

After 25 years with Geoscience Australia, and its predecessors, Brian started his own consultancy (Minty Geophysics) in 2011. Over the years he has undertaken a number of international training consultancies – mainly in the field of airborne gamma-ray spectrometry. These include consultancy work for the Geological Survey of France, Geological Survey of Norway, Anglo American Corporation, the South African Geophysical Association, and the Iranian Geophysical Society. He has also represented Australia on two International Atomic Energy Agency consultancies – looking at the standardisation of acquisition, calibration and data processing procedures for gamma-ray spectrometry.

Who Should Attend:

Geophysicists and geologists seeking to broaden their knowledge of the gamma-ray spectrometric method and its geoscience applications.

Course Outline:

Session 1:

  • Course overview and scope
  • Fundamentals of gamma-ray spectrometry
  • Introduction to ground and airborne surveying

Session 2:

  • Calibration and data processing
  • Spectral methods for reducing noise
  • Data reduction methods
  • Radioelement baselines and back-calibration

Session 3:

  • Contract specifications and survey monitoring
  • Quality control for airborne gamma-ray surveys
  • Radon effects in gamma-ray surveys

Session 4:

  • Gamma-ray fundamentals for effective interpretation
  • Disequilibrium and accuracy
  • Measurement precision
  • Presentation and interpretation

Register Here via the ASEG web site.