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Gravity Method

06 November, 2024

Purpose: Gravity surveys are a key tool in mineral exploration and geotechnical studies, as they detect density variations in the subsurface. This method is especially useful for locating deposits of gold, base metals, and diamonds, and for identifying buried bedrock and structural features in geotechnical projects. 

Applications:

Mineral Exploration: Gravity surveys help pinpoint dense mineral bodies, making them effective in searching for gold and base metals.

Geotechnical Uses: By detecting bedrock variations, gravity surveys support construction planning and hazard assessment in complex terrains.

Technical Process: High-precision equipment, such as the Scintrex CG-6 Gravimeter paired with Trimble GPS systems, records data even in difficult field conditions. The collected gravity data undergoes multiple corrections—such as Bouguer, Free Air, and Earth Tide—to account for natural variations. UBC-GIF v6 software then models the corrected data, producing accurate subsurface density maps.

Key Uses: Gravity surveys are essential for identifying dense ore bodies and assessing subsurface geology for both mineral exploration and construction, offering valuable insights into the structure and composition of the ground.


 

  • Gravity Surveys help explore for for gold, base metals and diamonds, for example.  For geotechnical applications gravity surveys detect buried bedrock escarpments, for example.  
  • Scintrex CG-6 Gravimeter with Trimble R12I rover and Trimble R12 base with 35W repeater for acquiring high precision data through uncut survey lines and rough bush. A Trimble TSC7 datalogger helps navigate and record the GPS data.
  • We calculate Bouguer Gravity with Earth Tide corrections, Free Air Corrections, Bouguer corrections and Latitude corrections. 
  • The corrected data inversion model using UBC-GIF v6 software.
  • See also: