Radargram for GPR profile PT6
Radargram for GPR profile PT7
1 – GPR profile length (m) 2-8 – GPR data 2-4 – overlapping rock assemblage 2 –Q+C2ol-ok deposits 3 – glacial Q deposits; 4 – C2ur deposits; 5 – host V2z rock assemblage 6 – projected pipe contour 7 – tectonic fault zones 8 – projection of the Pionerskaya pipe to the GPR profile line 9 – position of wells at GPR profiles 10 – position of drilling wells in the plane of the geological structure, their numbers and bottom depth 11-16 – drilling data 11-13 – overlapping rock assemblage 11 – quaternary system, sands, loam soils, sand-and-pebble 12 – medium layer, Kashirskian horizon, Urguzskaya suite, sandstones with rare thin layers of aleurolites 13 – host rock assemblage, Vendian, Kotlin horizon, Padun suite, gold-bearing layers, sandstones with layers of aleurolites and argillites 14-15 – kimberlite rock assemblage, crater facies 14 – lower bench, tuffs, tuffites 15 – top bench, tuffaceous sedimentary rocks – sandstones, tuffaceous sandstones, tuffites 16 – distance from the start of the GPR profile, m
Horizontal section of the Pionerskaya pipe at depths of approximately: a) 20 m b) 50 m
Horizontal section of the Pionerskaya pipe at depths of approximately: c) 60 m d) 90 m
1 – GPR profiles and their numbers 2-4 – as per GPR data 2 – overlapping rock assemblage with various physical and lithologic properties 3 – zones of relatively intensive EM wave attenuation related to the presence of a kimberlite pipe 4 – host rock assemblage 5 –pipe border as identified by drilling 6 – wells that uncovered kimberlite pipe Pionerskaya and their numbers
Fig. 7. Deep structure model showing the geological structure of the Pionerskaya Pipe along the 90 m deep vertical and horizontal sections (as per GPR data).
Fig. 7 below shows a deep structure model of the Pionerskaya pipe as per the GPR data along a 90 m deep vertical section and the horizontal depth slice at 90 m depth through the 3D model. The Pionerskaya pipe is defined by the zones of relatively intense EM wave amplitude attenuation (blue highlighting).