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Top-Rock
Depth Mapping to top of Bedrock
![](https://hiseis.com/wp-content/uploads/2022/09/Add-a-subheading-e1662461353352.png)
YOU BRING
Seismic shot gathers from 2D or 3D surveys.
YOU GET
3D Surface or 2D line in T-SURF and/or DXF format.
WE BRING EXPERT HUMANS
• Hiseis hard-rock seismic processing team
WITH EXPERT SYSTEMS
• Seismic refraction tomography
• Near-surface velocity model-building
WHAT IS TOP-ROCK?
TOP-ROCK utilises seismic refraction tomography to generate a detailed 3D model of the near-surface velocity variations within a project area. This data can be generated directly from a seismic dataset or can be further optimised through calibration with available drilling. The output wireframe can identify vertical changes in the near-surface velocity down to a few metres of resolution.
![](https://hiseis.com/wp-content/uploads/2022/09/top-rock-yaoure-1024x1024.png)
WHY IS THIS IMPORTANT FOR EXPLORATION?
Velocity variations in the near surface are directly related to seismic rock competency and hence, a detailed map of the velocity field provides a high-resolution map of near surface conditions, highlighting key features such as the position of depositional structures, alteration and bedrock lithology changes.
![](https://hiseis.com/wp-content/uploads/2022/09/toprock-test2-Recovered-1024x1024.png)
WHY THIS IS IMPORTANT FOR GEOTECHNICAL?
TOP-ROCK can define the extent of free-dig material and provide important input for the design of pit-wall slopes, infrastructure placement and engineering specifications.
WHY THIS IS IMPORTANT FOR ORE RECOVERY?
TOP-ROCK can help define the extent of oxide material and produces a physical wireframe to assist in analysis and calculation of ore recovery.
WHY IS THIS IMPORTANT FOR HYDROGEOLOGY?
TOP-ROCK can help define the extent of oxide material and produces a physical wireframe to assist in analysis and calculation of ore recovery.
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Look ahead of the drill bit
Map depth of regolith to optimise drilling operations.
We can’t predict your future
but we can help you see underground.