Integrating geologic and geophysical data through advanced constrained inversions

Peter Lelièvre; Douglas Oldenburg; Nicholas Williams

doi:10.1071/ASEG2009ab044

ISSN: 2202-0586
E-ISSN:

oa Integrating geologic and geophysical data through advanced constrained inversions
Authors Peter Lelièvre^a,b, Douglas Oldenburg^a,c and Nicholas Williams^a,d
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^a The University of British Columbia - Geophysical Inversion Facility, Dept of Earth & Ocean Sciences, , 6339 Stores Road, Vancouver, V6T1Z4, , Canada ^b [email protected] ^c [email protected] ^d [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2009, Issue ASEG2009 - 20th Geophysical Conference, Dec 2009, p. 1 - 6
DOI: https://doi.org/10.1071/ASEG2009ab044
- Published online: 01 Dec 2009

Abstract

Introduction

To be reliable, Earth models used for mineral exploration should be consistent with all available geologic information. Furthermore, combining several complimentary types of geophysical data collected over the same Earth region can further reduce ambiguity and enhance inversion results. Phillips (2001), Williams (2006) and Farquharson et al (2008) provide examples of incorporating some types of geologic information to dramatically improve inversion results. We expand the types of geologic information that can be incorporated and present a cooperative inversion strategy for inverting multiple data types.

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References

Farquharson, C. and Oldenburg, D., 1998, Nonlinear inversion using general measures of data misfit and model structure: Geophys. J. Int., 134, 213-227.
Farquharson, C., Ash, M. and Miller, FL, 2008, Geologically constrained gravity inversion for the Voisey's Bay ovoid deposit: The Leading Edge, 27, 64-69.
Li, Y. and Oldenburg, D., 1996, 3-D inversion of magnetic data: Geophysics, 61, 394-408.
Li, Y. and Oldenburg, D., 2000, Incorporating geologic dip information into geophysical inversions: Geophysics, 65, 148-157.
Li, Y. and Oldenburg, D., 2003, Fast inversion of large-scale magnetic data using wavelet transforms and a logarithmic barrier method: Geophys. J. Int., 152, 251-265.
Phillips, N., 2001, Geophysical inversion in an integrated exploration program: examples from the San Nicolas deposit: University of British Columbia, Vancouver, Canada: Master’s Thesis.
Williams, N., 2006, Applying UBC-GIF potential field inversions in greenfields or brownfields exploration: Melbourne, Australia: Australian Earth Sciences Convention (AESC) Abstracts.

/content/journals/10.1071/ASEG2009ab044

Article Type: Research Article

Keyword(s): cooperative inversion; geologic constraints; geophysical inversion; mineral exploration.

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