1887

Abstract

Summary

A time domain electromagnetic and a magnetic surveys were conducted by a VTEM system in 2005 over Drybones kimberlite (Canada). The EM data, showing IP effect, were inverted using the modified AarhusINV code with Cole-Cole modeling while for the magnetic data we used a new inversion algorithm considering vertical profiles (soundings) of data at different altitudes.

The comparison of the inverse models, i.e. susceptibility, resistivity and chargeability, was performed along a profile for which a geological cross-section has been drawn basing on drilling information. The results revealed the different sensitivity of methods with respect to the geological structures at Drybones bay. However we show how the cooperation of the TDEM and aeromagnetic data in the studied area can lead to a better understand of the structures at depth.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201602133
2016-09-04
2020-04-04
Loading full text...

Full text loading...

References

  1. Cole, K.S. and Cole, R.H.
    [1942] Dispersion and absorption in dielectrics. Journal of Chemical Physics, 9–4, 341–351.
    [Google Scholar]
  2. Cordell, L. and Grauch, V.J.S.
    [1985] Mapping basement magnetization zones from aeromagnetic data in the San Juan basin, New Mexico. In: W.J.Hinze (Ed.)The Utility of Regional Gravity and Magnetic Anomaly Maps, 181–197, Society of Exploration Geophysicists.
    [Google Scholar]
  3. Fedi, M. and FlorioG.
    [2013] Determination of the maximum-depth to potential field sources by a maximum structural index method. J. appl. Geophysics., 88, 154–160.
    [Google Scholar]
  4. Fedi, M. and Rapolla, A.
    [1995] Vertical Gravity an Magnetic Soundings: forward problem formulation and data inversion. Bollettino di Geofisica Teorica ed Applicata, Vol. XXXVII, N.147.
    [Google Scholar]
  5. Fiandaca, G., Auken, E., Christiansen, A.V. Gazoty, A.
    [2012] Time-domain induced polarization: Full-decay forward modelling and 1D laterally constrained inversion of Cole-Cole parameters, Geophysics, 77, E213–E225.
    [Google Scholar]
  6. Kaminski, V., Legault, J, Kumar, H.
    [2010] The Drybones kimberlite: a case study of VTEM and ZTEM airborne EM results. ASEG, Sydney, Australia, Expanded abstracts, 4.
    [Google Scholar]
  7. Kaminski, V., Oldenburg, D., W.
    [2012] The geophysical study of Drybones Kimberlite using 3D TDEM inversion and 3D ZTEM inversion algorithms. ASEG, Brisbane, Australia, Expanded abstracts, 4.
    [Google Scholar]
  8. Kretchmar, U.
    [1995] Drill Report on the Drybones Bay Kimberlite Property, Drybones Bay, Great Slave Lake, District of MacKenzie, Northwest Territories, Canada.
    [Google Scholar]
  9. Macnae, J.C.
    [1979] Kimberlites and exploration geophysics. Geophysics, 44(8), 1395–1416.
    [Google Scholar]
  10. Menke, W.
    [1984] Geophysical data analysis, discrete inverse theory. Academic Press, 260.
    [Google Scholar]
  11. Viezzoli, A., Christiansen, A.V., Auken, E. and Sørensen, K.
    [2008] Quasi-3D modeling of airborne TEM data by spatially constrained inversion. Geophysics, 73, 105–113.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201602133
Loading
/content/papers/10.3997/2214-4609.201602133
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error