hvsr case studies galore to help curb your scepticism 4 ... · hvsr case studies galore to help...
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HVSR case studies galore to help curb your scepticism
4 mineral case studies
Jayson Meyers Principal Consultant
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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
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HeliTEM dB/dt Z Ch20
Permian Rookwood Volcanics
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Permian Rookwood Volcanics
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HeliTEM CDI block model
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Tromino results follow drilling very well, seems to work!
200m spacing
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10 min
20 min
112 min
15 min optimal Wind noise
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Bedrock from drilling
50 MHz GPR limited to 20m
50m spacing
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Predicts and maps bedrock depth to within 10m
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Nabberu Basin
Yilgarn Craton
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BIF 250-1,000m spacing
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BIF
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VTEM dB/dt Z ch30
BIF
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Photo
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100m spacing Under sampled?
100m spacing
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