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Mike Dentith

Professor

School of Earth Sciences - Centre for Exploration Targeting

Contact details

Address
Geography & Geology Building, Rm 115
Centre for Exploration Targeting (CET)
School of Earth Sciences
The University of Western Australia (M006)
35 Stirling Highway
CRAWLEY WA 6009

Phone
+618 6488 2676

Email
michael.dentith@uwa.edu.au

Personal Profile

Research Output / Publications


Roles and responsibilities

Senior Research leader, Centre for Exploration Targeting

Graduate Research Cordinator School of Earth Sciences

Future research

Geophysical responses of mineral systems

Petrophysics of alteration in crystalline rocks

Deep crustal geophysical surveys

Intra-plate seismicity

Funding overview

Computer based geological cross-section restoration.
University of Western Australia Individual Research Project Grant. 1990.

The geometry and Phanerozoic history of the Darling Fault and associated structures in the Perth Basin. Minerals and Energy Research Institute of Western Australia in association with Ampolex, Arrow Petroleum, Petrofina, Petroz & WAPET. 1991-1993. With J Scott and R. Young.

Three-dimensional structure of Western Australian greenstone belts from gravity and magnetic measurements. University of Western Australia Individual Research Project Grant. 1991

Three-dimensional structure of the Southern Cross Greenstone Belt, Western Australia. Australian Society of Exploration Geophysics Research Foundation. 1991

Geophysical studies of the granite-greenstone terrain at Southern Cross, Western Australia. Australian Research Council (small grants scheme). 1992. With A Trench

Geophysical and geological studies of a probable meteorite impact structure in the Perth Basin, Western Australia. $9,000 Australian Research Council (small grants scheme). 1992. With A.W.R. Bevan (WA Museum)

Structural and depositional controls on Pb-Zn mineralisation, Lennard Shelf, Canning Basin, Western Australia. $115,000 Minerals and Energy Research Institute of Western Australia in association with BHP Minerals & Cadjebut J.V. 1993-1995. With J.R. Vearncombe, D.I. Groves, P.E. Playford (Geological Survey of Western Australia)

Analogue structural modelling applied to mineral and petroleum exploration. $119,401 Australian Research Council (collaborative research grant with Western Mining Corporation). 1992-94. With L.B. Harris.

Joint inversion of gravity and magnetic data. $1,800. Australian Society of Exploration Geophysics Research Foundation. 1994.

Development of a computer programs for an introductory course in geophysics. $7,500. The University of Western Australia, quality review funding initiative in computer-based teaching and learning applications. 1994.

Datum elevations from global positioning system and gravity measurements. $8,000 Australian Research Council (small grants scheme). 1995. With W.E. Featherstone (Curtin).

Geophysical exploration for aquifers in palaeochannels in the Western Australian goldfields. $84,000 APA(Industry) supported by Western Mining Corporation. 1995-1997.

An Integrated Geodesy Research Laboratory. $100,000 Australian Research Council (Research Infra-structure and Equipment Facilities Programme). 1996. With W.E. Featherstone (Curtin) and C. Rizos (UNSW).

Geophysical and geodetic studies to determine controls on the distribution of earthquakes in southwestern Western Australia. $15,008 Australian Research Council (small grants scheme). 1996. With W.E. Featherstone (Curtin).

A strategy to make exploration geophysics viable by the 21st century. $30,000 Australian Research Council (special initiatives). 1996-1997. With C. McA. Powell, N. Uren (Curtin) and J. McDonald (Curtin).

Application of wavelet transforms to processing and interpretation of aeromagnetic data. $84,000 APA(Industry) supported by World Geoscience Corporation. 1997-1999. With R.D. List (Dept of Mathematics, UWA).

Textural filtering of geophysical data. $14,454 Australian Society of Exploration Geophysics Research Foundation. 1997-1999. With R.R. Hillis (Adelaide)

Joint inversion of 3D IP and MT data incorporating EM coupling effects. $19,900 Australian Society of Exploration Geophysics Research Foundation. 1997-2000. With A. Endres and R. D. List (Dept of Mathematics, UWA).

Texture-based enhancement and classification of aeromagnetic data. $44,360 Minerals and Energy Research Institute of Western Australia in association with Aberfoyle Ltd, North Ltd, Normandy Exploration Ltd, Newcrest Mining Ltd, Pasminco Exploration, WMC Resources, Geological Survey of Victoria, RGC Exploration Pty Ltd, & BHP Research. 1998-1999. With D.R. Cowan (consultant).

Texture-based enhancement and classification of aeromagnetic data. $180,000 Australian Mining Industry Research Association in association with Aberfoyle Ltd, North Ltd, Normandy Exploration Ltd, Newcrest Mining Ltd, Pasminco Exploration, WMC Resources, Geological Survey of Victoria, RGC Exploration Pty Ltd, & BHP Research. 1998-1999. With D.R. Cowan (consultant).

Resolution of the sub-surface structure of the Hamersley province by multi-channel seismic reflection. $380,000 Minerals and Energy Research Institute of Western Australia in association BHP Iron Ore & Robe River Iron Associates. 1998-2000. With C.McA. Powell and P. Cawood (Curtin).

Processing and interpretation of a deep seismic reflection profile through the Hamersley iron ore province. $249,411 Australian Research Council (Strategic Partnerships with Industry, Research and Training Programme). 1998-2000. With A. Long.

Inversion of Potential Field Data. $16,600 Australian Society of Exploration Geophysicists Research Foundation. 1998-2000. With R.D. List and L. Noakes (Dept of Mathematics, UWA).

Edge-detection in geophysical data and its utilisation in mineral exploration. $18,050 Australian Society of Exploration Geophysicists Research Foundation. 1999-2001. With D.I. Groves

4D inversion of the conductivity structure of the earth from broadband induced polarisation measurements and complementary electromagnetic data. $62,268 Australian Research Council (Strategic Partnerships with Industry, Research and Training Programme). 1999-2001. With A. Endres and R. D. List (Dept of Mathematics) and M. Zhadanov (Utah).

Depositional and structural history of Devonian carbonate successions in the Cadjebut Fault Zone, Lennard Shelf (Canning Basin), Western Australia. $62,268 Australian Research Council (Strategic Partnerships with Industry, Research and Training Programme). 1999-2001. With A.D. George, N.A. Reynolds and N. Chow.

Neogene deformation styles and reactivation histories of basins along the North West Shelf of Australia. $62,268 Australian Research Council (Strategic Partnerships with Industry, Research and Training Programme). 1999-2001. With M. Keep, M. Fisher and I. Longley.

Defining the link between geophysical signatures and ore deposit models. $25,000 Australian Society of Exploration Geophysicists Research Foundation. 1999-2001. With D.I. Groves

Teleseismic Studies of the Southwest Seismic Zone, Western Australia. $10,288 Australian Research Council (small grants scheme). 2000.

Upper crustal structure of the Laverton tectonic Zone adjacent to major gold deposits from seismic reflection profiling. $236,500. Minerals and Energy Research Institute of Western Australia in association with Placer Dome and AngloGold Australasia. 2001-2002. With B. Goleby (Geoscience Australia).

Palaeoseismic studies in WA: Implications for earthquake hazard assessment. $15,726 UWA grants scheme. 2003.

Geowulf: An inference engine for complex earth systems. $190,000 Australian Research Council (Research Infra-structure and Equipment Facilities Programme). 2003. With J.L. Braun, M. Sambridge, A.J. Gleadow, R.W. Brown, S.Y. O’Reilly, B.R. Minty, C Beaumont and W.L. Griffin.

Latest Jurassic history of the Exmouth Sub-basin, north-west Shelf: Lowstand deposits of the basal Barrow Group. $142,447. Australian Research Council (Linkage scheme). 2005-2007. With A. George, D. Lockhart and M. Fittall.

Western Australian Palaeomagnetic and Rock Magnetic Facility. $246,000. Australian Research Council (Research Infra-structure and Equipment Facilities Programme). 2006. With Z. Li, M.E. Barley, P.A. Cawood, L.B. Collins, I.C. Fitzsimons, D.W. Haig, S.A. Pisarevsky, S.M. Reddy, M.T. Wingate, K. Wyrwoll, Z.Q. Chen and I.M. Tyler

Previous positions

Post-doctoral research fellow, Memorial University of Newfoundland, Newfoundland, Canada.

Current projects

Currently working on atextbook provisionally titled "Targets, maps and Mineral Systems: Geophysics in Modern Mineral Exploration"

Working with the Geological Survey of Western Australia to define deep crustal strucure in the Eastern Goldfields and relationship to orgoenic gold mineral systems

Industrial relevance

Virtually all my research is directly or indirectly related to the resource sector, especially mining.

Teaching overview

All aspects of exploration and solid-earth geophysics at B.Sc to M.Sc level

Research

My research interests are predominantly in applied geophysics, in particular research relevant to the mining and petroleum industries and cross-disciplinary studies combining the different, but complementary, geological information present in various geoscientific datasets. I also have geological research interests in palaeoseismology, the structure and tectonics of mineralised terrains and hydrocarbon basins, astroblemes, mafic dyke swarms and petrophysics.

Mining industry-related research includes; understanding the geophysical responses of mineral deposits especially from a petrophysical/geological perspective; novel approaches to processing of magnetic and similar datasets; and the ‘geological’ interpretation of geophysical datasets from mineralised terrains.

Petroleum-industry relevant research involves mostly the structural interpretation of gravity, aeromagnetic and seismic reflection data.

I am also interested in intra-plate seismicity in the context of the associated eismic hazard, which requires geophysical studies ranging in scale from local, near surface (palaeofault scarps), to the regional/crustal scale (wide-angle seismic survey using mine blast sources).


Some specific research areas are described below:

Geophysical Responses of Mineral Systems

Western Australia
This project was initiated when it was recognised that a mineral province of the importance of Western Australia was poorly described in terms of geophysical case studies. Numerous industry authors contributed papers, including the first significant descriptions of major deposits such as the Golden Mile near Kalgoorlie, the iron ore deposits of the Hamersley Basin, the heavy mineral sands at Enneabba.

The resulting publication, “Geophysical Signatures of Western Australian Mineral Deposits”, has sold around 1000 copies, i.e. its entire print run and only a few copies are still available. Since the 1994 publication/session case study publications have become common place in the ASEG’s journal Exploration Geophysics”.

South Australia
This project was supported by Primary Industries and Resources South Australia. Reflecting then state of knowledge in South Australia much material was located in the Government archives and re-interpreted. During the latter stages of the project recent exploration successes in South Australia allowed several industry authors to contribute to the project.

“Geophysical Signatures of South Australian Mineral Deposits” is available through ASEG publication outlets.

Interpetation of Geophysical Imagery
Interpretation of Regional-Scale Geophysical Datasets from Mineralised Terrains (magnetics, seismic, gravity, magnetotellurics)
Intra- plate Seismicity and Seismic Hazard in the Southwest of Western Australia
Geophysical Studies of Sedimentary Basins in Western Australia and the Northern Territory

Languages

English