Our Associates

We have a close association with highly respected geoscientists who are incorporated in many of our projects, adding additional skills and expertise. They are:

Tim Archer

Reid Geophysics, Director

Based in the UK, Tim is a re-seller of Intrepid and GeoModeller software and an associate of GeoIntrepid. Tim has been actively involved in geophysics for seventeen years. During that time, he has coordinated airborne surveys in Africa and North America, given technical presentations in Chile and Australia, provided geophysical training in West Africa, and provided contracting and consultancy services to projects in Guinea, Malta, Norway, Republic of Ireland, Senegal and Yemen. Since 2004, Tim has also owned and run a commercial geophysical company, specialising in near-surface hazard detection, principally for UK clients.

Tim has a particular specialisation in airborne time-domain electromagnetic surveys, as well as extensive experience of potential field (gravity and magnetic) methods, and a good working knowledge of most other non-seismic geophysical methods. He has written and co-developed a range of software applications in Delphi, Visual Basic and C#, both for in-house use and for commercial release. He has substantial GIS experience (both mainstream and customised). He has coordinated a wireline logging database and prospected for groundwater in the Kalahari Desert.

Tim’s special technical interests include 3D imaging of geophysical data, Improvement of existing workflows, and bespoke software development.

Asbjorn Christensen

Senior Consulting Geophysicist, Nordic Geoscience Pty Ltd

Asbjorn Norlund Christensen is owner of Nordic Geoscience Pty. Ltd., consulting world-wide on ground and airborne geophysics for resource exploration. He has over 20 years of experience working with airborne and marine geophysics using electromagnetics, magnetics, gravity, and gravity gradiometry. Asbjorn has worked on minerals and petroleum exploration projects in Australia, Asia, Africa, Europe, and the Americas, and he has managed research teams and technology companies.

His areas of expertise are: airborne geophysics, satellite derived gravity data solutions, potential fields, 3D geological and geophysical modelling, and the integrated interpretation of geophysical data for minerals and petroleum exploration. He has a M.Sc. in Geophysics from University of Aarhus, Denmark and a Ph.D. in Geophysics from Colorado School of Mines, USA. He is a member of EAGE, SEG, and ASEG. Asbjorn is based in Melbourne, Australia.

Roger Clifton

Geophysicist, Northern Territory Geological Survey

Roger started at BMR in 1968, processing geomag data.  Later he worked on the prospects that became the Karonie gold mine and the Greenbushes tin-tantalite-spodumene mine.  Currently his role is Geophysicist at the NT Geological Survey.  And, yes, he is "still working on that PhD! "

John Doherty

Director, Watermark Numerical Computing

John was originally a geophysicist but is now an environmental (mainly groundwater) modeller. He writes software which has become the industry standard for calibration and uncertainty analysis of environmental models. He divides his time between consulting, software development and teaching courses in his software which are held all over the world.

John has had over 35 years experience in the water industry – first as an exploration geophysicist and then as a modeller. He has worked in the public, private and university sectors and has collaborated in development, calibration and uncertainty analysis of models in Australia, North America, South America and Europe. He directs is own company of which he is the sole employee.

Peter Gunn

Geophysical Consultant

Peter Gunn is a Senior Associate of GeoIntrepid. His services include planning, supervision and direct involvement with the acquisition, processing, enhancement and interpretation of airborne magnetic and gravity surveys. Peter is also an experienced seismic interpreter, having worked with French petroleum interests for 17 years.

Peter has over 30 years’ experience as an independent consultant, as Head of Geophysical Mapping Group/ Airborne Survey Program for Australian Geological Survey Organisation (AGSO), and as Chief Geophysicist for subsidiaries of the Elf Aquitaine Group (now known as Total Fina Elf). Peter's petroleum exploration experience includes studies in virtually all significant onshore and offshore Australian sedimentary basins, the North Sea, the Irish Sea, the UK, African, Atlantic and Mediterranean margins. Peter is noted for his extensive background knowledge of sedimentary basin formation, structuring processes, depositional systems, hydrocarbon play concepts and applications of potential fields in basin studies. He has over 40 publications on magnetic and gravity interpretation, some referenced in textbooks and manuals. Peter has a long history of proven leadership skills within the industry, giving regular training courses, workshops and keynote addresses.

Peter holds a PhD in Geophysics with full majors in geology, physics and mathematics from the University of Durham (UK), BSc - University of Melbourne (Australia), MSc - University of Manitoba (Canada). He has worked in 23 countries and interpreted data from 11 additional countries. He is fluent in English and French, plus basic Spanish. He is currently based in Sydney, Australia.

Mike Hussey

Remote Sensing and Spectral Geology Consultant

Mike has over 37 years experience in applying Remote Sensing and Spectral Geology to mineral exploration for diamonds, gold, base metals, uranium and geothermal resources having completed projects in 24 countries. While working within the AAC Group as a photogeologist, he carried out research into the application of spectral geology for mineral mapping using field spectrometers and airborne hyperspectral data. This lead to the acquisition of the first HyMap scanner by DeBeers. Mike was project manager for the building and commissioning of this scanner. Subsequently he managed the DeBeers Hyperspectral Mapping Unit for 9 years which included supervising and organizing surveys, developing processing and analysis techniques and providing training in the use of hyperspectral survey data, including its integration with other exploration data sets.

Mike was the principal geologist for HyVista Corporation from 2006 until 2014. He currently manages his own consultancy, Mineral Spectra Mapping.

Mike holds a PhD in Spectral Geology  (Open University, UK) a Graduate Diploma in Photogeology (ITC, Netherlands) and BSc (Southampton University, UK) and is based in Melbourne, Australia.

Peter Milligan

Geophysical Consultant 

Peter is the principal consulting geophysicist with ENRiT (www.enrit.com.au) following a career in geophysics spanning 30 years with the Commonwealth of Australia. He graduated from Flinders University, South Australia in 1975 with a B.Sc. (Hons) in Geophysics and Geology, and a Diploma of Education (Dip.Ed.). Peter subsequently obtained a doctorate in Geophysics (Geomagnetism) at Flinders University. Starting in 1974 Peter taught science and mathematics in South Australian high schools before joining Geoscience Australia (GA, previously BMR) in 1985, initially with the ‘Geomagnetism’ section. From 1986 to 1999 Peter worked in the ‘Airborne’ group, initially participating in airborne magnetic and radiometric surveys and their subsequent data processing, and also conducted research into the significance of micropulsations as a noise source in airborne magnetic data. Later his research involved developing methods to enhance and image-process airborne magnetic and radiometric data. During 2000–2007 Peter worked as a senior geophysicist, providing expertise to the ‘Regional Studies’ and ‘Minerals Systems’ groups, working on the new Magnetic Anomaly Grid Database of Australia (including completion in 2010 of the fifth edition of the Magnetic Anomaly Map of Australia). Peter’s recent research interests are focussed on testing and developing new methods of extracting useful information from government geophysical data repositories (analysis, enhancement, image-processing, modelling and visualisation of geophysical data, particularly magnetotelluric [MT] data). From 2007-early 2015 Peter helped establish the new MT capability at GA where acquisition of major MT projects in Australia, such as the AusLAMP (Australian Lithospheric Architecture Magnetotelluric Project) initiative, are now undertaken.

Brian Minty

Geophysical Consultant 

Brian Minty joined GeoIntrepid as an Associate in 2012. He also runs Minty Geophysics www.mintygeophysics.com.au, a consultancy specialising in the processing and enhancement of airborne geophysical data. Brian studied initially at Rhodes University (BSc), University of Witwatersrand (BSc Hons) and the University of Pretoria (MSc, cum laude). His MSc thesis was on the automatic estimation of depth on aeromagnetic profiles. After working 5 years with the South African Geological Survey – principally on a large geophysical survey targeting uranium in the Karoo, Brian immigrated to Australia in 1982. He worked for Hunting Geology and Geophysics for 4 years where he was mainly concerned with the integrated interpretation of magnetic, gamma-ray spectrometric and gravity data with other remotely-sensed datasets.

In 1986 Brian joined Geoscience Australia where he worked in geophysical research for the next 25 years before starting Minty Geophysics in 2011. In 1996 he completed a PhD thesis at the Australian National University on the analysis of multichannel airborne gamma-ray spectra. He has given many workshops on airborne gamma-ray spectrometry, both in Australia and overseas, and is widely regarded as an expert in this field.

Alan Reid

Reid Geophysics

Alan offers consulting services in potential field geophysics to both the petroleum and mineral exploration industries. His services include survey design, commissioning and QC, as well as data processing, interpretation and training. His clients include government departments and parastatals (Mali, Libya, UK), oil companies (BG, Chevron-Texaco, Shell, Repsol, CEPSA, Conoco-Phillips) and mineral exploration companies prospecting for diamonds and precious and base metals.

Alan has over 24 years’ experience as an exploration geophysicist, as an independent consultant, on the staff of GETECH and Robertson Research International, and as Chief Geophysicist of Tsumeb Corporation (part of the Newmont Group) in Namibia. Prior to that he taught in the Physics Department of the University of Zimbabwe. He founded and ran their M.Sc. course in Exploration Geophysics. He is noted for his contribution to magnetic survey design and for his ongoing role in the development of grid Euler deconvolution.

Alan holds a PhD in Geophysics from the University of Alberta (Canada). He is a Deputy Editor of Exploration Geophysics and a member of the Awards Committee of the EAGE and the Technical Standards and Gravity/Magnetic Committees of the SEG. He is also an Honorary Research Fellow in the School of Earth and Environment at the University of Leeds.

Jovan Silic

Geophysical Consultant

Jovan Silic is a director and principal consulting geophysicist with Jovan Silic and Associates Melbourne, Australia. He has a successful association with the mineral exploration industry over a period of 30 years in a wide range of geological environments spanning five continents. Jovan graduated from University of Western Australia with a Bachelor of Science (Honors) First Class, and in 2000 obtained a Ph.D. (Geophysics) degree from Macquarie University, New South Wales, Australia, on the topic of interpreting TDEM data.

Application of, and research into, electrical methods to exploration problems is one area of his specialization. As an exploration geophysicist he has made important contributions to discoveries of world class base/precious metals deposits, and diamond exploration projects.

Jovan’s industry experience includes working with government organizations on regional data compilations, with major resource companies such as Cominco Ltd (Canada), and as Chief Geophysicist with Aberfoyle Resources (Australia). For a further 17 years Jovan has worked as a consulting geophysicist, on major mineral and oil & gas exploration (and research) projects within Australia, Canada, South East Asia, Central Asia, South America and Europe. For ten years Jovan was on the Advisory Board to the Co-operative Research Center for Australian Mineral Exploration Technologies.

Hernan Ugalde

Paterson, Grant & Watson Limited (Canada), Senior Geophysical Consultant 

Hernan Ugalde is an experienced Consulting Geophysicist with around 20 years spent encompassing all stages of geoscientific data flow including: Acquisition, QA/QC, processing, modelling and interpretation. Over the past 8 years he has been focused on data integration and extracting geological data from geophysics. Since May 2014 he has been collaborating with Intrepid Geophysics on software testing, and as a reseller and associate representing North, Central and South America.

Hernan Ugalde obtained a BSc and MSc in Geophysics at the University of Chile in Santiago. After 3 years at the Geological Survey of Chile (Sernageomin) he joined Paterson, Grant & Watson Limited’s Santiago office in 1997. In 2001 he moved to Canada to pursue a Ph.D. at the University of Toronto, which he obtained in 2006. He then worked at McMaster University as a postdoctoral/research scientist from 2006 to 2011, collaborating  with Bill Morris on geological integration and 3D modelling of geophysical data in a variety of environments, particularly Bathurst, NB, Sudbury, ON, and Newfoundland; all this while keeping his links to PGW as a part-time consulting geophysicist. In 2011 he returned full time to PGW, where he has been interpreting and modelling geophysical data with a strong emphasis on using geophysics to obtain geological information. He has led and participated in numerous geophysical and geological training sessions in Africa, South America and Canada.

Matthew (Matt) Zengerer                                            

Gondwana Geoscience, Director

Email: matt@gondwanageo.com. Website: www.gondwanageo.com. Matt has a BSc in Geology and Geophysics from Flinders University and a BSc(Hons) Geophysics from the University of Tasmania in 1999.  He began his career as a field processing geophysicist in potential fields and EM, with occasional stints as a geologist, working all over Australia.  Matt worked for 2 years at CGG as a marine seismic processor and worked on projects from many ocean basins. He also spent time working in Pau, France for the research group specialising in seismic velocity processing. Following a desire to move into integrated geology and geophysics interpretation, Matt was contracted to the Geological Survey of Western Australia in the mid 2000s where he expanded skills in geological interpretation from geophysics and potential fields processing on many WA datasets. He also spent time performing field mapping and was first introduced to Intrepid and Geomodeller software. At the end of his contract Matt moved to the UK to work as an interpretation and modelling geophysicist for Ark Geophysics (later ARKeX), where he worked with integration of seismic, potential fields and GIS in many basin environments from across the world.  Matt returned to Adelaide at the end of 2007 and was employed as a uranium and base metals exploration geophysicist before he became a solo Geophysical Consultant and an Associate of Geointrepid in 2009. As a consultant Matt worked extensively in oil and gas, geothermal, uranium, base metals, gold and coal exploration, specialising in integrated interpretation of potential fields, seismic, geology and GIS, and occasionally EM or MT. Since 2006 Matt has worked continuously with forward and inverse modelling of potential fields data and has become a specialist in stochastic inversion using Geomodeller and an expert Intrepid user. His cross-disciplinary background qualifies him to work across Hydrocarbon, Minerals and Geothermal Exploration fields.  Matt joined Intrepid in May 2013 to take on the roles of Product Specialist and Software Support. Matt remains an active member of ASEG and EAGE and has presented interpretation and modelling studies at several Australian and International conferences.