Research

Richard joined Laurentian after spending 20 years working in the exploration business. He has extensive experience working as a research scientist, an exploration geophysicist and a manager. He has international experience in the application of geophysics to lead-zinc exploration, hydrocarbon exploration and environmental issues. Richard is most familiar with electromagnetics, magnetics, induced polarization and gravity; these types of data can be acquired on the ground, from aircraft, and below the earth surface in boreholes or in mines. His main research interests are in the application of these geophysical methods to the discovery of mineral deposits, hydrocarbons and water resources. Richard has been involved in the development of the GEOTEM, MEGATEM, HeliGEOTEM systems and processing of TEMPEST data. 

Richard's main research interests are in the application of geophysical methods to the discovery of all types of mineral deposits. In particular, he is interested in using geophysical methods to create an image of the Earth that reflects the physical properties of the material below the surface of the Earth. These images can in some cases be used to infer the geology. The geophysical methods used are electromagnetic methods, potential field methods, radio imaging methods, geophysical logging and measuring physical properties of core and outcrop using hand-held instruments.

For more specific details, see the list of recent publications.

Current Research Projects

Interested students should contact Richard directly at rssmith@laurentian.ca

 

Awards

• Best Presentation ASEG/SEG conference 1988

• Best Presentaiton ASEG conference 1997

• Best paper in the journal Geophysics 1997

• Barlow Memorial Medal for the Best Paper in the journal Exploration and Mining Geology 2012

• Canadian Society of Exploration Geophysicists Distinguished Lecturer, 2009/2010

• Best poster paper in the Mining sessions at the 2016 SEG meeting in Dallas (Richard Smith) for the paper entitled “Induced-polarization effects in airborne electromagnetic data: Estimating chargeability from shape reversals”

• Best student paper in the Mining sessions at the 2016 SEG meeting in Dallas (Tomas Naprstek and Richard Smith) for the paper entitled “A new method for aeromagnetic data interpolation with a focus on linear features” 

• Best student poster paper in the Mining sessions at the 2016 SEG meeting in Dallas (Frederic Gaucher and Richard Smith) for the paper entitled “Exploring for copper gold deposits with time-domain electromagnetics in the Chapais-Chibougamau mining camp: Case history of a challenging variable environment”

• Goldschmidt Lecturer, Norwegian Geological Survey (NGU), March 14, 2016

• Best poster paper in the Mining sessions at the 2016 SEG meeting in Dallas, to Richard Smith for the paper entitled “Induced-polarization effects in airborne electromagnetic data: Estimating chargeability from shape reversals”

• Inductee, International Mining Technology Hall of Fame -- Exploration Category. Awarded to the MEGATEM development team (Peter Annan, Mike Carson, David Fountain, John Gingerich, Bruce Magnes, George Nader, Tom Payne, Al Proulx, Brenda Sharp, Richard Smith, Ken Witherly). (2018)

• Canadian Journal of Earth Sciences, Outstanding Reviewer Award for 2018

• Canadian Exploration Geophysics Society Foundation Special Lecturer, Queens University, November 5, 2019.

• Australian Exploration Geoscience Conference, Best Paper Award – Minerals (2021)

• Len and Genice Collett Distinguished Visiting Lectureship in Geophysics, KEGS Foundation (2023)

Teaching

Teaching

Fall 2009: GEOL 5956 Exploration Geophysics

Winter 2010: GEOL 4956 Geophysics

Fall 2010: GEOL 5007/6007 Student Seminar GEOL 6506 Directed Studies

Winter 2011: GEOL 4956 Geophysics

Fall 2011: GEOL 5956 Exploration Geophysics

Winter 2012: GEOL 4956 Geophysics

Fall 2012: GEOL 1006 Introductory Geology I/ GEOL 1021 Understanding Earth I.

Winter 2013: GEOL 4956 Geophysics

Spring 2013: MERC Greenstone Gold and VMS field course (co-taught)

Fall 2013: GEOL 5956 Exploration Geophysics

Winter 2014: GEOL 4956 Geophysics; GEOL 5957 Advanced Topics in Geophysics

Winter 2015: GEOL 4956 Geophysics; GEOL 2066 Near Surface Geophysics; GEOL 5066 Hydrothermal Ore deposits (co-taught)

Fall 2015: GEOL 4956 Geophysics; GEOL 5956 Exploration Geophysics

Winter 2016: Sabbatical

Fall 2016: GEOL 3146 Physics of the Earth;  GEOL 4956  Mineral Exploration Geophysics;

Winter 2017: GEOL 2066  Near Surface Geophysics; GEOL 5957  Advanced Topics in Geophysics

Fall 2017: GEOL 5956 Exploration Geophysics;

Winter 2017: GEOL 3146 Physics of the Earth ;  GEOL 4956  Mineral Exploration Geophysics

Fall 2017: GEOL 5956 Exploration Geophysics

Winter 2018: GEOL 3146 Physics of the Earth;  GEOL 4956  Mineral Exploration Geophysics

Spring 2018    Greenstone Gold and VMS field course (co-taught)

Fall 2018    GEOL 2046 Natural Hazards and Disasters; GEOL 2066      DEOL 2066 Near Surface Geophysics 

Winter 2019    GEOL 4956 Mineral Exploration Geophysics

Fall 2019    GEOL 5956 Exploration Geophysics

Winter 2020    GEOL 4956 Mineral Exploration Geophysics; GEOL 5007/6007 Research Seminar in Geology

Fall 2020    GEOL 2066 Near Surface Geophysics

Winter 2021    GEOL 4956 Mineral Exploration Geophysics; GEOL 2046 Natural Hazards and Disasters

Fall 2021     GEOL 4956 Mineral Exploration Geophysics; GEOL 5956 Exploration Geophysics

Winter 2022    PHYS 1007 Introductory Physics II 

Spring 2022    GEOL 2046 Natural Hazards and Disasters

Fall 2022    GEOL 5007/6007 Research Seminar in Geology; GEOL 4956 Mineral Exploration Geophysics

Winter 2023    Sabbatical

Fall 2023     GEOL 4956 Mineral Exploration Geophysics; GEOL 5956 Exploration Geophysics; GEOL 5007/6007 Research Seminar in Geology

Winter 2024    GEOL 4826/5826 Potential Field and Gamma-Ray Spectrometry Methods

Fall 2024    GEOL 5007/6007 Research Seminar in Geology; GEOL 2066 Near Surface Geophysics

Winter 2025    GEOL 5007/6007 Research Seminar in Geology; GEOL 4956 Mineral Exploration Geophysics; GEOL 4816/5816 Electrical and Electromagnetic Methods

Fall 2025    GEOL 4826/5826 Potential Field and Gamma-Ray Spectrometry Methods; GEOL 5956 Exploration Geophysics

Winter 2026    GEOL 4956 Mineral Exploration Geophysics; GEOL 3146 Physics of the Earth
 

Student/Postdoctoral Supervision (last 10 years)

Bachelor’s Honours

Hume, Brandon (2017-2018)  Specific Gravity measurements in the Abitibi Sub-Province, Canada

Long, S. Robert (2013-2014)   Can the ground resistivity method detect alteration at the Midwest Uranium Deposit, northern Saskatchewan, Canada?

Pecman, Melissa (2013-2014)  Using hand-held tools to measure physical properties from core drilled at the Victoria Property, Sudbury, Canada.

Desmarais, Jacques (2013-2014)  A study for designing surveys with the InfiniTEM system.

Applied Masters

Anjana Anithakumari Prabhakaran (2025) The theory and application of the Radio Imaging method in exploration geophysics

Arifa Zaman Oyshi (2025) The theory and application of the audio frequency magnetic method in exploration geophysics

Dolvan Tchoumgna Kamleu (2025) Estimating density from borehole logging data.

Dhruvilkumar Patel (2024) The theory and application of gravity methods in exploration geophysics.

Syed Zaidi (2024) The application of surface-wave seismic methods in exploration geophysics.

Ahsan Saleem (2024) The application of the seismic method in exploration geophysics.

Abubakar Mijinyawa (2024) Geophysical data interpretation to delineate geological structures within the mineralized area of Toro local government, Bauchi State

Franklin Osiki (2023) The use of electromagnetic methods in exploration for porphyry deposits in South America And the west of North America: A literature review

Matshidiso Modiba (2024) Aeromagnetic and electromagnetic interpretation of the Matheson area located in the northwestern end of the Abitibi greenstone belt of the Superior province, Canada

Baloyi, Nkholo Kevin (2017-2017)  Geological Interpretation of Aeromagnetic Data from the SwayzeGreenstone Belt, Abitibi Subprovince, Ontario, Canada

Master’s Thesis

Brandon Hume (2020-23) , Laval University, Understanding the effects of mineralizing fluids on petrophysical properties: A study of physical properties in a Cu-Au system at Upper Beaver, Canada

Michael Finlayson (2019-21) Signal processing for a three-component transmitting (3CTx) electromagnetic device

Zamperoni, Anthony (2018-20)  A computer algorithm for calculating the response of a sphere below overburden for survey planning and geophysical modelling.

Justina, Fabiano Della (2018-19)  Physical properties cross sections of Metal Earth transects interpreted from geophysical data

McNeice, William (2017-)  A comparison of the magnetic susceptibility measured on outcrop and derived from aeromagnetic data

Bagley, Thomas (2017-)  Using the resistive-limit data from x- and z-component airborne electromagnetic data to determine the overburden thickness

Ghahfarokhito, Amir Maleki (2017-)  Physical property cross sections of the Metal Earth Chibougamau transect

Trudel (Huggins), Jacqueline (2016-18)  Geological characterisation guided by fuzzy k-means clustering of physical properties measured from core samples from the Victoria property, Sudbury Ontario

Gazo, Nikolas (2015-17)  Ground electromagnetic experiments to investigate the possibility of using an airborne electromagnetic system to detect nuclear magnetic resonance associated with unbound water in the subsurface

Gaucher, Frédéric (2014-17)  Developing a new electromagnetic method to explore for copper-gold deposits in the Chapais district, Québec.

Naprstek, Tomas (2013-14)  Physics of the radio imaging method

Schaub, Christoph (2013-14) Monitoring rock stress using electric and magnetic field measurements

Deng, Deng (2012-14)  Comparison of instruments for measuring the magnetic susceptibilty of drill core

Karimi Sharif, Ladan (2011-13) Tomographic imaging of cross-well radio imaging data

Lymburner, Joshua (2010-13)  A multiple transmitter/receiver electromagnetic system

Parry, Devon (2010-13) A comparative study of physical property measurements collected around the Sudbury Basin

Doctorate

Nasir Maiauduga (2023-) , Using geophysics to explore for mineral resources in Bauchi State, Nigeria

Yasaman Nemati (2020-) , Assessing the geophysical attributes of hydrothermally altered gold deposits using petrophysical logs

Christopher Mancuso (2020-)  Joint inversion of the South Sturgeon greenstone belt’s upper crust

Anthony Zamperoni (2020-)  Acquisition, processing and interpretation of data from a three-component transmitter system

Hossein Jodeiri Akbari Fam (2018-22) Multifocusing seismic imaging of complex geological structures

Khatereh Danaei (2018-19) Visiting Scholar from University of Tehran, working on gravity inversion

Justina, Fabiano Della (2019-2022)  The Incorporation of Geophysical, Petrophysical and Geological Constraints in Gravity Modeling to Resolve Structures at Depth

Roots, Eric (2017-2024)  Inversion of magnetotelluric data with smoothing in the geochron domain and discontinuities across geological and structural boundaries

Maepa, Mothepana Francisca (2016-)  Mineral prospectivity mapping using geological and geophysical data in the Abitibi subprovince

Naprstek, Tomas (2014-)  Magnetic data gridding and interpretation

Li, Yongxing (2013-2017)  Modelling of Radio Imaging data

Mahmoodi, Omid (2012-2015)  Using physical properties measurements to infer the geology

Olaniyan, Oladele (2011-2014) Using geophysical data to study the geometric shape of the Sudbury structure

Kolaj, Michal (2010-2015) Using electromagnetic gradient measurements to investigate the subsurface

Post-doctorate

Eshaghi, Esmaeil (2017-) Geophysical compilation and interpretation of geophysical data on the Metal Earth transects.

Research Associate

Ademola Adetunji (2019-) Acquisition, processing and inversion of magnetotelluric (MT) and audo MT data for the Metal Earth Project

Hill, Graham (2018-19)  Magnetotelluric data acquisition, processing and interpretation on the Metal Earth transects

Rajesh Vayavur (2019-23) ,Geophysical compilation and interpretation of potential-field geophysical data on the Metal Earth transects

Saeid Cheraghi (2018-23)  Seismic processing of the high-resolution reflection seismic lines collected for the Metal Earth project

Mir, Reza (2013-2018) Processing and inversion of geophysical data for the CMIC Footprints CRD project

Publications

Chapters in Books and Proceedings

• Lesher, M., Hannington, M., Galley, A., Ansdell, K., Astic, T., Banerjee, N., Beauchamp, S., Beaudoin, G., Bertelli, M., Bérubé, C., Beyer, S., Blacklock, N., Byrne, K., Cheng, L.-Z., Chouinard, R., Chouteau, M., Clark, J., D'Angelo, M., Darijani, M., Devine, M., Dupuis, C., El Goumi, N., Enkin, R., Farquharson, C., Fayol, N., Feltrin, L., Feng, J., Gaillard, N., Gleeson, S., Gouiza, M., Grenon, C., Guffey, S., Guilmette, C., Guo, K., Hart, C., Hattori, K., Hollings, P., Joyce, N., Kamal, D., King, J., Kyser, K., Layton-Matthews, D., Lee, R., Lesage, G., Leybourne, M., Linnen, R., Lypaczewski, P., McGaughey, J., Mitchinson, D., Milkereit, B., Mir, R., Morris, W., Oldenburg, D., Olivo, G., Perrouty, S., Piercey, S., Piette-Lauzière, N., Raskevicius, T., Reman, A., Rivard, B., Ross, M., Samson, I., Scott, S., Shamsipour, P., Shi, D., Smith, R., Sundaralingam, N., Taves, R., Taylor, C., Valentino, M., Vallée, M., Wasyliuk, K., Williams-Jones, A., Winterburn, P., 2017, Integrated Multi-Parameter Exploration Footprints of the Canadian Malartic Disseminated Au, McArthur River-Millennium Unconformity U, and Highland Valley Porphyry Cu Deposits: Preliminary Results from the NSERC-CMIC Mineral Exploration Footprints Research Network.  In “Proceedings of Exploration 17: Sixth Decennial International Conference on Mineral Exploration” edited by V. Tschirhart and M.D. Thomas, 2017, 325–347
• Gaucher, Frédéric E. S. and Smith, Richard S., 2017, Exploring for copper–gold deposits exhibiting a wide range of conductivities with time–domain electromagnetics at Opemiska, Canada. In “Proceedings of Exploration 17: Sixth Decennial International Conference on Mineral Exploration” edited by V. Tschirhart and M.D. Thomas, 2017, 779–787
• Schaub, C., Smith, R., 2014, Determining the feasibility of a real time geophysical magnetic and electric measurement system for monitoring strain underground – laboratory magnetic test.: Proceedings of the Seventh International Conference on Deep and High Stress Mining. 16-18 September, 2014, Sudbury, ON, Canada. Australian Centre for Geomechanics.  
• Smith, R. S. and O’Connell, M. D., 2007, An Improved Method for Trending of Features on Aeromagnetic Maps:  In Milkereit, B. (Ed), Proceedings of Exploration 07: Fifth Decennial International Conference on Mineral Exploration. 853-861
• Vallee, M.A. and Smith, R. S. 2007, Comparison of Fixed-Wing Airborne Electromagnetic 1D inversion methods:  In Milkereit, B. (Ed), Proceedings of Exploration 07: Fifth Decennial International Conference on Mineral Exploration, 1067-1072.
• Smith, R.S., Hyde, C., Lee, T., Almond, R., 2003, Impulsive moments at work: Proceedings of the 3DEM-3 symposium, Australian Society of Exploration Geophysicists.
• Rowe, J.D., Smith, R.S., Beattie, D.D. and Warren, R.K., 1998, Airborne ALTREXTM electromagnetic/magnetic definition of hydrocarbon alteration plumes: in Gibson, R.I., and Millegan, P.S. (Eds), Geologic applications of gravity and magnetics: Case Histories. SEG Geophysics Reference Series, No. 8.  Soc. Expl. Geophys., Tulsa, OK. pp 124-129.
• Smith, R.S., and Annan, A.P., 1997, Advances in airborne time-domain EM technology: in Gubins, A.G., (Ed.), Proc. of Explor. 97: Fourth Dec. Int. Conf. on Min. Explor., 497-504.
• Hodges, G. and Smith, R., 1997, Induced polarization effects in time-domain EM data: in Gubins, A.G., (Ed.), Proc. of Explor. 97: Fourth Dec. Int. Conf. on Min. Explor., 565-566.

Journal Articles

Some of the publications below are available for download at https://zone.biblio.laurentian.ca/handle/10219/3306

• ​Eric A. Roots, Graham J. Hill, Ben M. Frieman, Richard S. Smith, James A. Craven, David B. Snyder, Andrew J. Calvert, 2025, Channelized metasomatism in Archean cratonic roots as a mechanism of lithospheric refertilization Nature Communications, Accepted.
• Ahmed Abubakar Sarki¸ Ahmad Isah Haruna, Richard Smith, Umar Sambo Umar, Umar Nasiru Umar and Nasir Abdullahi Maiauduga, 2025, Lineament extraction and structural analysis using total magnetic intensity (TMI) and Shuttle radar topographic mission (SRTM) data in Rogo Northwestern Nigeria. Dutse Journal of Pure and Applied Sciences (DUJOPAS), 11(2b), 199-207.  DOI: 10.4314/dujopas.v11i2b.19
• Nemati, et al., 2025, Petrophysical signatures and mineral endowment: The Piché Group, Augmitto-Bouzan sector, Québec, Canada, submitted to Geophysical Prospecting, manuscript ID GP-2024-4898.
• Rajesh Vayavur, Richard Smith, Ademola Adetunji, Rasmus Haugaard, John Ayer, Lisa Gibson, Guido Serafini, 2024, Three-dimensional upper crustal architecture of the East range of the Sudbury Basin, Ontario, Canada.  Under revision for Canadian Journal of Earth Sciences. 
• Zamperoni, A. and R. Smith, 2024, Modelling the airborne electromagnetic response of a sphere underlying a uniform conductive overburden: Geophysics revised.
• Hill, G. J., Frieman, B. M., Roots, E. A., Wannamaker, P. E., Maris, V., Haugaard, R., Kamm, J., Klanica, R., Kavacikova, S., Calvert, A. J., Craven, J. A. and Smith, R. S., 2025, Deformation controlled fluid mass‐transfer processes in ancient orogens. Geophysical Research Letters, 52, e2024GL110244. DOI: 10.1029/2024GL110244
• Harris, J.,R , J. Strong, P. Thurston, K. Nymoen, R. Haugaard, M. Naghizadeh, G. Tuba, P. Behnia, E. Grunsky, J. Ayer, R. Smith, R. Sherlock, A. Reza-Mokhtari, 2025, Mineral prospectivity mapping and differential metal endowment between two greenstone belts in the Canadian Superior craton.  Natural Resources Research, 34(1), 97-120. DOI: 10.1007/s11053-024-10432-3
• Pham, Luan Thanh, Richard S. Smith, Saulo P. Oliveira and Vinicius Theobaldo Jorge, 2024, Enhancing magnetic source edges using the tilt angle of the analytic-signal amplitudes of the horizontal gradients: Geophysical Prospecting, 72, 3026-3037.  DOI: 10.1111/1365-2478.13573
• Shahsavani, H. and R. Smith, 2024, Aeromagnetic gradiometry with UAV, a case study on small iron ore deposit: Drone Systems and Applications, 12, 1-9. doi: 10.1139/dsa-2023-0126
• Della Justina, F. R.S. Smith and R. Vayavur, 2024, A case-history tutorial describing the incorporation of geophysical, petrophysical and geological constraints to generate realistic geological models of the Matheson Study Area, Ontario: Geophysics, 89: B431-B442. DOI: 10.1190/geo2023-0522.1
• Della Justina, F., R. S. Smith and R. Haugaard, 2024, A case-history using gravity data to validate alternate interpretations of the material below a deep seismic reflector in the Matheson area of Ontario, Canada: Geophysics, 89(6), B443-B452. DOI: 10.1190/GEO2023-0523.1
• E. A. Roots, B. M. Frieman, G. J. Hill, R. S. Smith, J. A. Craven, A. J. Calvert, D. B. Snyder, 2024, Constraints on Growth and Stabilization of the Western Superior Craton From Inversion of Magnetotelluric Data.  Tectonics, 43, e2023TC008110. doi: 10.1029/2023TC008110 (open access)
• Al-Bahadily, H.A., A. M. Al-Rahim, and R. S. Smith, 2024, Tectonic elements and structural framework deduced from magnetic data of the Southern Desert, Iraq, Pure and Applied Geophysics. 181, 1523-1540, doi: 10.1007/s00024-024-03460-w
• Al-Bahadily, H. A., Al-Rahim, A. M., Smith, R. S., 2024, Determination of reactivated regions and faults in the Iraq Southern Desert with the new edge technique, Inverse Tilt Angle of Second-gradients (ITAS), Acta Geophysica, 72, 1675-1692. DOI: 10.1007/s11600-023-01176-4 (AOM to Inst. Repository May, 2025)
• Della Justina, F., R. S. Smith, 2024, Using gravity data uncertainties in forward modeling to estimate uncertainties in model parameters: A case history in estimating the dip and the dip uncertainty of the Porcupine Destor Fault: Geophysics, 89(3), B229-B240. doi: 10.1190/GEO2023-0202.1
• Eshaghi, E., R. Vayavur, R. S. Smith, C., Mancuso, F. Della Justina, J. Ayer, 2023, Density and magnetic susceptibility of major rock units within the Abitibi greenstone belt: A compilation with examples of its use in constraining inversion: Exploration Geophysics, 54(6), 647-669. doi: 10.1080/08123985.2023.2236154.  
• Harris, J.R., J. Ayer, M. Naghizadeh, R Smith, D. Snyder, P. Behnia, M. Parsa, R. Sherlock, M. Trivedi, 2023, A study of faults in the Superior province of Ontario and Quebec using the random forest machine learning algorithm: Spatial relationship to gold mines: Ore Geology Reviews 157, 105403.  doi: 10.1016/j.oregeorev.2023.105403  (open access)
• Jodeiri Akbari Fam, Hossein, Mostafa Naghizadeh, Oz Yilmaz, Richard Smith, 2023, 3D generalized spherical multifocusing seismic imaging: Geophysics, 88(1), T13–T31. doi: 10.1190/GEO2022-0154.1
• Jodeiri Akbari Fam, H., Naghizadeh, M., Smith, R., Yilmaz, O., Cheraghi, S., and Rubingh, K., 2023, High-resolution 2.5D multifocusing imaging of a crooked seismic profile in a crystalline rock environment: Results from the Larder Lake area, Ontario, Canada. Geophysical Prospecting, 71(7), 1152-1180. https://doi.org/10.1111/1365-2478.13285
• Khatereh Danaei, Ali Moradzadeh, Gholam-Hossain Norouzi, Richard Smith, Maysam Abedi, Hossein Jodeiri Akbari Fam, 2022, 3D inversion of gravity data with unstructured mesh and leastsquares QR-factorization (LSQR). Journal of Applied Geophysics, 104781. doi: 10.1016/j.jappgeo.2022.104781
• Will McNeice, R. S. Smith and E. Eshaghi, 2023, How magnetic susceptibilities measured on outcrops can be used for modelling (and constraining inversions of) aeromagnetic data, Exploration Geophysics, 54(2), 189-204. DOI: 10.1080/08123985.2022.2082281
• Naghizadeh, M., R. Smith, K. Rubingh, R. Sherlock, J. Ayer, B. Lafrance, S. Cheraghi, D. Snyder, J. Vergne, D. Hollis and A. Mordret, 2022, Active and passive seismic imaging of the central Abitibi greenstone belt, Larder Lake, Ontario, Journal of Geophysical Research: Solid Earth, 127, e2021JB022334. Doi: 10.1029/2021JB022334 
• Richard S. Smith and Terry J. Lee, 2022, Multiple-order moments of the transient electromagnetic response of a one-dimensional earth with finite conductance – the Gaussian variation applied to a field example, Exploration Geophysics, 53(3), 262-274 DOI: 10.1080/08123985.2021.1925105
• Smith, R.S., E. A. Roots, and R. Vayavur, 2022, Transformation of magnetic data to the pole and vertical dip and a related apparent susceptibility transform: Exact and approximate approaches: Geophysics, 87(2), G1-G14. doi: 10.1190/geo2020-0827.1
• Mir R. P. Fullagar, R. Smith, S. Scott, M. Ross, P. Shamsipour, M. Chouteau, K. Ansdell and M. Gouiza, 2022, Forward modeling and 3D inversion of EM data collected over the McArthur River uranium deposit in the Athabasca Basin, Canada: Geophysics, 87(2), B129-B143. doi: 10.1190/geo2021-0199.1
• Roots, E. A., Hill, G. J., Frieman, B. M., Wannamaker, P. E., Maris, V., Calvert, A. J., Craven, J. A., Smith, R. S., Snyder, D. B., 2022, Magmatic, hydrothermal and ore element transfer processes of the southeastern Archean Superior Province implied from electrical resistivity structure. Gondwana Research, 105, 84–95. https://doi.org/10.1016/j.gr.2021.12.004
• Naprstek, T., and Smith, R.S., 2022, Convolutional neural networks applied to the interpretation of lineaments in aeromagnetic data: Geophysics, 87(1): JM1-JM13. https://doi.org/10.1190/geo2020-0779.1
• Bagley, T., and Smith, R. S., 2022, Estimating the parameters of simple models from two-component on-time airborne electromagnetic data: Geophysics, 87(1), K15-K27. DOI: 10.1190/GEO2021-0307.1
• Adetunji, A., Ferguson, I. J., Vayavur, R., Cheraghi, S., Naghizadeh, M., Whymark, W., Smith, R. S., Ayer, J., Craven, J. A., 2021, Evidence of Magmatism and rifting in the southern Superior craton from the Temagami geophysical anomaly, Precambrian Research, 106310, https://doi.org/10.1016/j.precamres.2021.106310
• Haugaard, R., Della Justina, F., Roots, E., Cheraghi, S., Vayavur, R., Hill, G., Snyder, D., Ayer, J., Naghizadeh, M., Smith, R. 2021, Crustal-Scale Geology and Fault Geometry Along the Gold-Endowed Matheson Transect of the Abitibi Greenstone Belt. Economic Geology. 116(5) 1053-1072.  https://doi.org/10.5382/econgeo.4813 
• Hill, G.J., Roots, E.A., Frieman, B.M., Haugaard, R., Craven, J.A., Smith, R.S., Snyder, D.B., Zhou, X., Sherlock, R., 2021, On Archean craton growth and stabilisation: Insights from lithospheric resistivity structure of the Superior Province: Earth and Planetary Science Letters. 562, 116853. doi: 10.1016/j.epsl.2021.116853 (Open Access)
• Maepa, Francisca, Smith, Richard S, Tessema, Abera, 2021, Support vector machine and artificial neural network modelling of orogenic gold prospectivity mapping in the Swayze greenstone belt, Ontario, Canada. Ore Geology Reviews, 130, 103968. https://doi.org/10.1016/j.oregeorev.2020.103968 
• Terry J. Lee and Richard S. Smith (2021): Multiple-order moments of the transient electromagnetic response of a one-dimensional earth with finite conductance – theory, Exploration Geophysics, 52:1, 1-15, DOI: 10.1080/08123985.2020.1760715
• Maleki, Amir; Smith, Richard S.; Eshaghi, Esmaeil; Mathieu, Lucie; Snyder, David; Naghizadeh, Mostafa, 2021, Potential-field modelling of the prospective Chibougamau area (NE Abitibi subprovince, Quebec), using geological, geophysical and petrophysical constraints:  Canadian Journal of Earth Sciences, 58, 297–312 doi: 10.1139/cjes-2019-0221  (Open Access)
• Maepa, Francisca and Richard Smith, 2020, Examining the controls on gold deposit distribution in the Swayze greenstone belt, Ontario, Canada, using multi-scale methods of spatial data analysis: Ore Geology Reviews, 125, 103671 https://doi.org/10.1016/j.oregeorev.2020.103671 
• Martínez, José Manuel, Richard Smith & Danilo Díaz Vázquez, 2020, On the time decay constant of AEM systems: a semi-heuristic algorithm to validate calculations: Exploration Geophysics, 51, 94-107, DOI: 10.1080/08123985.2019.1662291 
• Vallée, Marc A. William A. Morris, Stéphane Perrouty, Robert G. Lee, Ken Wasyliuk, Julia J. King, Kevin Ansdell, Reza Mir, Pejman Shamsipour, Colin G. Farquharson, Michel Chouteau, Randolph J. Enkin, Richard S. Smith, 2019, Geophysical inversion contributions to mineral exploration: Lessons from the Footprints project: Canadian Journal of Earth Sciences, 56(5): 525-543, https://doi.org/10.1139/cjes-2019-0009
• Mathieu L, Lafrance B, Sherlock R, Gibson H, Ayer J, Thurston P, Daigneault R, Bédard P, Gaboury D, Naghizadeh M, Perrouty S, Feltrin L, Smith R, Beaudoin G, Hamilton M, Hannigton M, Pearson G., 2019, Le projet Metal Earth: une initiative de recherche en exploration minérale en 4D: Géologues, 2019, 201, 54-59. https://www.geosoc.fr/publication/geologues/sommaires-et-resumes/1383-201-les-grandes-perspectives-en-geosciences-au-xxie-siecle-tome-ii-1/file.html
• Mir, R., Perrouty, S., Astic, T., Bérubé, C. L., Smith, R. S., 2019, Structural complexity inferred from anisotropic resistivity: example from airborne EM and compilation of historical resistivity/IP data from the gold-rich Canadian Malartic district, Québec, Canada: Geophysics, 84 (2), B153–B167. https://doi.org/10.1190/geo2018-0444.1
• Li, Yongxing and Smith, Richard, 2019, Contrast source inversion (CSI) for cross-hole radio imaging (RIM) data - part 1: theory and synthetic studies, Journal of Applied Geophysics 161, 45–55.  https://doi.org/10.1016/j.jappgeo.2018.12.002 
• Naprstek, Tomas and Smith, Richard S., 2019, A new method for interpolating linear features in aeromagnetic data: Geophysics, 84 (3), JM15–JM24. doi: https://doi.org/10.1190/geo2018-0156.1
• Smith, R. S., 2018, An airborne electromagnetic system with a three-component transmitter and three-component receiver capable of detecting extremely conductive bodies: Geophysics, 83(5), E347-E356, doi: 10.1190/GEO2017-0849.1
• Li, Yongxing and Smith, Richard, 2017, Contrast source inversion (CSI) method to cross-hole radio-imaging (RIM) data - Part 2: A complex synthetic example and a case study: Journal of Applied Geophysics, 150, 93–100. https://doi.org/10.1016/j.jappgeo.2018.01.003
• Frédéric E. S. Gaucher and Richard S. Smith, 2017, The impact of magnetic viscosity on time-domain electromagnetic data from iron oxide minerals embedded in rocks at Opemiska, Québec, Canada: Geophysics, 82(5), B165-B176. https://doi.org/10.1190/geo2017-0153.1
• Li, Yongxing and Smith, Richard, 2017, Modelling and straight-ray tomographic imaging studies of cross-hole radio-frequency electromagnetic data for mineral exploration:  Geophysical prospecting, 66, No 2, 282 – 299. DOI: 10.1111/1365-2478.12516
• Kolaj M. and Smith, R. S., 2017, Inductive electromagnetic data interpretation using a 3-D distribution of 3-D magnetic or electric dipoles: Geophysics, 82(4), E187-E195. doi 10.1190/GEO2016-0260.1
• Mahmoodi, O., Smith, R. S. and Spicer, B., 2017, Using constrained inversion of gravity and magnetic field to produce a 3D litho-prediction model. Geophysical Prospecting, 65, 1662–1679. doi:10.1111/1365-2478.12484
• Desmarais, J. K. and Richard S. Smith, 2016, Approximate semianalytical solutions for the electromagnetic response of a dipping-sphere interacting with conductive overburden: Geophysics, 81(4), E265–E277. 10.1190/GEO2015-0597.1
• Long, S. M. R., Smith, R. S., and Hearst, R. B., 2016, Ground resistivity method and DCIP2D forward and inversion modelling to identify alteration at the Midwest uranium deposit, northern Saskatchewan, Canada: Exploration Geophysics, published on line. http://dx.doi.org/10.1071/EG15059
• Naprstek, T. and R. S. Smith, 2016, The effect of dielectric permittivity on the fields radiated from a radio-frequency electric dipole in a homogeneous whole space: Geophysics, 81(2), K1-K8. DOI:10.1190/geo2015-0219.1
• Mahmoodi, Omid, Richard S Smith and Douglas K. Tinkham., 2016, Supervised classification of down-hole physical properties measurements using neural network to predict lithology: Journal of Applied Geophysics, 124, 17-26. doi:10.1016/j.jappgeo.2015.11.006 
• Parry, D., R. S. Smith and O. Mahmoodi, 2015, Tools used in mineral exploration for measuring the conductivity and the resistivity in drillholes and on drill core: observations on their range of sensitivity: Exploration Geophysics, 47, 315-322. http://dx.doi.org/10.1071/EG14083
• Lo, B., Y. Li, R.Smith, J. Arce, M. Shore, and T. Lane, 2015, Introduction to special section: Mining and minerals exploration interpretation: Interpretation, 3(2),  p. SLi. http://dx.doi.org/10.1190/INT2015-0318-SPSEINTRO.1.
• Li, Yongxing and Richard S. Smith, 2015, Forward modelling of radio imaging (RIM) data with the Comsol RF module: Computers and Geosciences, 85, 60–67. http://dx.doi.org/10.1016/j.cageo.2015.08.012
• Mahmoodi, O., Smith, R., 2015, Clustering of downhole physical property measurements at the Victoria property, Sudbury for the purpose of extracting lithological information: Journal of Applied Geophysics, 118, 145–154. http://dx.doi.org/10.1016/j.jappgeo.2015.04.015
• Lo, B., Y. Li, R.Smith, J. Arce, M. Shore, and T. Lane, 2015, Introduction to special section: Mining and minerals exploration interpretation: Interpretation, 3(2), p. SLi. http://dx.doi.org/10.1190/INT2015-0318-SPSEINTRO.1.
• Olaniyan, O., R. S. Smith, B. Lafrance, 2015, Regional 3D geophysical investigation of the Sudbury Structure: Interpretation 3(2), SL63-SL81. http://dx.doi.org/10.1190/INT-2014-0200.1
• Kolaj, M., and Smith, R., 2015, A multiple transmitter and receiver electromagnetic system for improved target detection: Geophysics 80 (4), E247–E255, doi: 10.1190/GEO2014-0466.1
• Desmarais, J.K., Smith, R.S., 2015, The total component (or vector magnitude) and the energy envelope as tools to interpret airborne electromagnetic data: a comparative study: Journal of Applied Geophysics, in press. APPGEO3783R1
• Desmarais, J.K., Smith, R.S., 2015, Combining spatial components and Hilbert transforms to interpret ground-time-domain-electromagnetic data: Geophysics, 80(4) E237-E246, doi: 10.1190/GEO2014-0528.1
• Desmarais, J.K., Smith, R.S., 2015, Benefits of using multi-component transmitter–receiver systems for determining geometrical parameters of a dipole conductor from single-line anomalies: Exploration Geophysics: in press http://dx.doi.org/10.1071/EG14076
• Desmarais, J.K., Smith, R.S., 2015, Decomposing the electromagnetic response of magnetic dipoles to determine the geometric parameters of a dipole conductor: Exploration Geophysics, in press.
• Desmarais, J.K., Smith, R.S., 2015, Survey design to maximize the volume of exploration of the InfiniTEM system when looking for discrete targets: Journal of Applied Geophysics, 115, 11-23. doi:10.1016/j.jappgeo.2015.02.012
• Lymburner, J. and Smith, R.S., 2014, A procedure for collecting electromagnetic data using multiple transmitters and receivers capable of deep and focussed exploration: Geophysics, 80(1), E1-E10. doi: 10.1190/geo2014-0251.1
• Olaniyan, O., Smith, R.S., and Lafrance, B., 2014, A constrained potential field data interpretation of the deep geometry of the Sudbury structure: Canadian Journal of Earth Sciences, 51(7): 715–729 dx.doi.org/10.1139/cjes-2013-0212
• Kolaj, M., and Smith, R., 2014, Robust conductance estimates from spatial and temporal derivatives of borehole electromagnetic data: Geophysics, 79(3), E115–E123. doi: 10.1190/geo2013-0387.1
• Kolaj, M., and Smith, R., 2014, Mapping lateral changes in conductance of a thin sheet using time-domain inductive electromagnetic data: Geophysics, 79(1), E1-E10. 10.1190/GEO2013-0219.1
• Smith, R. S., 2014, Electromagnetic induction methods in mining geophysics from 2008 to 2012:, Surveys in Geophysics: 35(1), 123-156. DOI 10.1007/s10712-013-9227-1
• Kolaj, M. and Smith, R. 2013, Using spatial derivatives of electromagnetic data to map lateral conductance variations in thin-sheet models: Applications over mine tailings ponds: Geophysics, 78(5), E225–E235. doi: 10.1190/geo2012-0457.
• Olaniyan, O., Smith, R., and Morris, B., 2013, Qualitative geophysical interpretation of the Sudbury Structure: Interpretation, 1(1), T25–T43. doi: 10.1190/INT-2012-0010.1
• Guo, K., J. E. Mungall, R. S. Smith, 2013, The ratio of B-field and dB/dt time constants from time-domain electromagnetic data: a new tool for estimating size and conductivity of mineral deposits: Exploration Geophysics, in press, http://dx.doi.org/10.1071/EG13042
• Smith, R. S. and B. Neil, 2013, Precision requirements for specifying transmitter waveforms used for modelling the off-time electromagnetic response: Exploration Geophysics, 44(1), 1-5. http://dx.doi.org/10.1071/EG12040
• Smith, R. S., 2012, Using combinations of spatial gradients to improve the detectability of buried conductors below or within conductive material. Geophysics, 78(1), E19-31.
• Smith, R.S., Thurston, J.B., Salem, A. and Reid, A.B., 2012, A grid implementation of the SLUTH algorithm for visualizing the depth and structural index of magnetic sources: Computers and Geosciences, 44, 100-108.
• Smith, R.S., and Wasylechko, R., 2012, Sensitivity cross-sections in airborne electromagnetic methods using discrete conductors: Exploration Geophysics, 43, 95-103.
• Vallée, M. A., Smith, R. S. and Keating, P., 2011, Metalliferous mining geophysics – State of the art after a decade in the new millennium: Geophysics, 76, W31-W50.
• Smith, R.S., Koch, R. Hodges, G. and Lemieux, J., 2011, A comparison of airborne electromagnetic data with ground resistivity data over the Midwest deposit in the Athabasca basin: Near Surface Geophysics, 9, 319-330.
• Bouchedda, A., Chouteau, M., Keating, P. and Smith, R., 2010, Sferics noise reduction in time-domain electromagnetic systems: application to MEGATEMII signal enhancement: Exploration Geophysics, 41, 225-239. doi:10.1071/EG09007
• Ulla, J., Smith, R., Samson, C., Vallée, M., 2010, Automation of the SLUTH method: a novel approach to airborne magnetic data interpretation: Near Surface Geophysics, 8, 519-528. doi:10.3997/1873-0604.2010033
• Smith, R.S., Wood, G. and Powell, B., 2010, Detection of alteration at the Millennium uranium deposit in the Athabasca Basin: a comparison of data from two airborne electromagnetic systems with ground resistivity data. Geophysical Prospecting, 58, 1147-1158.
• Vallée, M.A., Smith, R.S. and Keating, P., 2010, Case history of combined airborne time-domain electromagnetics and power line fields survey in Chibougamau, Canada: Geophysics, 75, B67- B72.
• Smith, R., Fountain, D., and Allard, M., 2003, The MEGATEM fixed-wing transient EM system applied to mineral exploration: A discovery case history: First Break 21, 73-77
• Smith, R.S., and Annan, A.P., 2000, Using an induction coil sensor to indirectly measure the B-field response in the bandwidth of the transient electromagnetic method: Geophysics 65, 1489-1494.
• Thurston, J.B. and Smith, R.S., 1997,Automatic conversion of magnetic data to depth, dip, and susceptibility contrast using the SPI (TM) method: Geophysics 62, 807-813
• Smith, R.S., and Thurston, J.B., 1998, ISPITM-the improved source parameter imaging method: Geophysical Prospecting 46, 141-151.
• Smith, R.S., Edwards, R.N., Buselli, G., 1996, An automatic technique for presentation of coincident-loop, impulse-response, transient, electromagnetic data: Geophysics 59, 1542-1550