Imaging the geometry and structure of kimberlite pipes using audio-MT

9/12/00


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Table of Contents

Imaging the geometry and structure of kimberlite pipes using audio-MT

EM methods (1)...

EM methods (2)...

Parameter measured: electrical conductivity (1/resistivity) Range...

Conduction mechanisms...

MT method...

Skin Depth�.

MT advantages over controlled-source EM methods

MT signals�.

Generic model of a kimberlite

Acquisition Array: 250 m dia. pipe

2D Earth response

3D cf. 2D: rhoTM

Wide conductive pipe: model

Wide conductive pipe: response

Wide conductive pipe: inversion

Thin kimberlite

Resistive kimberlite

Heterogeneous pipe

Imaging kimberlite through till

Phases:

Models:

Conclusions:

Costs for test survey:

Author: Alan G. Jones

Email: [email protected]

Home Page: http://www.cg.nrcan.gc.ca/staff/jones