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HVSR case studies galore to help curb your scepticism
4 mineral case studies
Jayson Meyers Principal Consultant
Selected Australian and New Zealand case studies showing HVSR survey results from Tromino 3G ENGY instruments; ones that I have permission to show…
Tromino results compared with other geophysical survey results
Depth to hard bedrock estimation is very robust under the right geological conditions of strong acoustic basement impedance contrast below regolith and sedimentary deposits
Generally 2 instruments leapfrogging along a survey line for greater production, wide spaced for rapid reconnaissance or close spaced for detail
Field operation is very simple, use fieldies
HeliTEM dB/dt Z Ch20
Permian Rookwood Volcanics
Permian Rookwood Volcanics
HeliTEM CDI block model
Tromino results follow drilling very well, seems to work!
200m spacing
10 min
20 min
112 min
15 min optimal Wind noise
Bedrock from drilling
50 MHz GPR limited to 20m
50m spacing
Predicts and maps bedrock depth to within 10m
Nabberu Basin
Yilgarn Craton
BIF 250-1,000m spacing
BIF
VTEM dB/dt Z ch30
BIF
Photo
100m spacing Under sampled?
100m spacing