21/12/2016
Borehole seismic in basalt formation
Hello, We are planning a borehole seismic (VSP) in a geological setting of top basalt of 1 km thickness and down below fractured granite. Our target for borehole imaging is granite basement below basalt. What will be best seismic source ( dynamite, vibrosis or airgun in a pit) for borehole survey in this geological setting. There is a dam within 10-15 km distance from this borehole site. As per my understanding dynamite will be best source but is it recommended to use other kind of sources in this kind of geological setting, considering environmental issues.