Three-dimensional geology from potential field geophysics: Applications to Bathurst Mining Camp, Eastern Canada

D.J. FitzGerald; H. Ugalde; B. Morris; H. Holstein

doi:10.1071/ASEG2015ab201

24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery

ISSN: 2202-0586
E-ISSN:

oa Three-dimensional geology from potential field geophysics: Applications to Bathurst Mining Camp, Eastern Canada
Authors D.J. FitzGerald^a, H. Ugalde^b, B. Morris^c and H. Holstein^d
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^a Intrepid Geophysics, 110/3 Male St Brighton Victoria, , 3186, [email protected] ^b Paterson, Grant, Watson Limited, Toronto, , ON, , Canada, [email protected] ^c McMaster University, Hamilton, , ON, Canada, [email protected] ^d Aberystwyth University, Aberystwyth, , Wales, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2015, Issue 24th International Geophysical Conference and Exhibition – Geophysics and Geology Together for Discovery, Dec 2015, p. 1 - 4
DOI: https://doi.org/10.1071/ASEG2015ab201
- Published online: 01 Dec 2015

Abstract

Interpretation methods and tools for geophysics datasets continue to evolve. Advances in clustering algorithms, the use of implicit functions to create 3D surfaces, new algorithms to estimate source depths and dips, and the availability of clever computational geometry libraries, contribute to the discipline of potential field interpretation techniques, allowing for a much more explicit statement of implied 3D description. While traditional scalar measures of potential fields have benefited from applying new ideas, perhaps more exciting is the reduction in ambiguity imposed from gradient measurement when used as the basis for field interpretation. Full tensor gravity gradiometry in particular, allows for 2D fault dip and throw calculations. Direct detection of high density bodies and faults via state-of-the-art gravity gradiometry is now a reality. Bodies greater than 200m in lateral extent are detectable. Implicit 3D structural geology modelling techniques derived from gravity curvature attributes of the observed gravity field present a leading edge technique for defining structurally controlled near surface geology geometry. A demonstration from the Bathurst camp dataset is given.

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2026-01-14

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References

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Article Type: Research Article

Keyword(s): foliation; implicit functions; source depth and geometry

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oa Three-dimensional geology from potential field geophysics: Applications to Bathurst Mining Camp, Eastern Canada

Abstract

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