Pierre-Simon Ross

Areas of expertise

Volcanology and Economic Geology , Lithogeochemistry , Multisensor core logging (physical properties, infrared mineralogy, geochemistry, core imagery

  • INRS Professor

Phone
418-654-3773

Fax
418-654-2600

Email
pierre-simon.ross@ete.inrs.ca

Eau Terre Environnement Research Centre

490, rue de la Couronne
Québec City, Quebec  G1K 9A9
CANADA

See research centre

PHOTO : le complexe volcanique Quaternaire de Tower Hill, Newer Volcanics Province, Australie

Champ volcanique Hopi buttes en Arizona.

Éruption du volcan Sakurajima, Japon.

Team

Mélanie Beaudette

Master’s Degree in Earth Sciences

Émile Boily-Auclair

Master’s Degree in Earth Sciences (co-direction: Patrick Mercier-Langevin, CGC)

Pier Palo Comida

PhD in Earth Sciences

Benjamin Latutrie

PhD in Earth Sciences

Liam Maw

Master’s Degree in Earth Sciences (co-direction: Patrick Mercier-Langevin, CGC)

Simon Tremblay-Hébert

Master’s Degree in Earth Sciences (co-direction: Patrick Mercier-Langevin, CGC)

Octavio Vite-Sanchez

PhD in Earth Sciences (co-direction: Patrick Mercier-Langevin, CGC)

Dr Pierre-Simon Ross’ research interests include mineral deposits associated with volcanic or magmatic activity such as volcanogenic massive sulfide deposits (Cu, Zn, Au, Ag), porphyry systems (Cu, Mo, W, Au), or kimberlites (diamonds), and their geological environment. For VMS deposits, he employs volcanic reconstruction, chemo-stratigraphy, and studies of hydrothermal alteration through lithogeochemistry and infrared spectrometry. In physical volcanology, Dr Ross specializes on mafic to ultramafic volcaniclastic rocks, mainly of the submarine or phreatomagmatic types, especially those from maar-diatreme volcanoes. Laboratory to large-scale experiments can help understand volcanic processes when field work is not sufficient. Dr Ross has developed and is in charge of the Mobile laboratory for the physical, chemical and mineralogical characterization of rocks. This lab contains a multi-sensor core logger which can measure nearly simultaneously, at high spatial resolution, in a non-destructive manner, the density, magnetic susceptibility, geochemistry and mineralogy of exploration drill cores.

Maar-diatreme volcanoes

Diatremes are volcanic pipes filled by volcaniclastic debris. Their surface expressions are called “maars”, which are volcanic craters excavated below the original ground surface. Many kimberlites are diatremes, and kimberlites can contain diamonds. Volcanic processes operating inside diatremes are not well known. Our research program combines field work on well exposed diatremes and experiments. Two PhD students are currently active:

  • Pier Paolo Comida is conducting magma fragmentation experiments and studing juvenile pyroclasts
  • Benjamin Latutrie is mapping two diatremes in the Hopi Buttes volcanic field of Arizona

 

The Parent Group in the Northern Domain of the Ungava Orogen

MSc student Mélanie Beaudette is documenting the volcanology, geochemistry, stratigraphy, and age of the Parent Group in the Paleoproterozoic Northern Domain of the Ungava Orogen, northern Quebec. SHe is also applying pXRF technology to regional geological mapping in volcanic rocks.

 

Controls on gold in the LZ5 zone, Doyon-Bousquet-LarRonde mining camp

MSc student Émile Boily-Auclair is examining the structural and lithological controls on gold emplacement in the LZ5 zone of the Doyon-Bousquet-LaRonde mining camp, Abitibi Subprovince, Quebec. The main supervisor is Patrick Mercier-Langevin (Geological Survey of Canada).

 

Geochemistry of the Abitibi Grenstone Belt and relations with VMS deposits

PhD student Octavio Vite-Sanchez is compiling the geochemistry of volcanic rocks for the whole Abitibi Subprovince. Volcanic assemblages hosting VMS deposits will be compared with VMS-depleted assemblages.

Volcanology of the Blake River Group, Abitibi Subprovince

This study focused on mafic volcaniclastic rocks in the Blake River Group: their physical volcanology, geochemistry, stratigraphic position, absolute age and origin.

Volcanology and metallogeny of the Hébécourt Formation and associated VMS mineralization, Blake River Group, Abitibi Subprovince

This MSc project employed physical volcanology, chemo-stratigraphy, and trace element analysis (LA-ICP-MS) in pyrites from sulfide-bearing stratified intervals to identify volcanic vents and hydrothermal vents ion the Hébécourt property of Cogitore Resources inc.

 

The porphyry-style Archean Mo-Cu system at Tilly, Baie-James, Quebec

This UQAM-led MSc project, supervised by Michel Jébrak, looked at Sirios Resources Inc.’s Tilly property, where several Mo-Cu ±Au showings occur in an Archean tonalite. Mineralization is found mostly in hydrothermal breccias and stockworks and seems locally associated with porphyritic intrusions.

 

Multi-sensor core logging in the Matagami mining camp

We used the Mobile laboratory for the physical, chemical and mineralogical characterization of rocks on drill cores from the Matagami mining camp. Highlights of the project are the ability to identify cryptic contacts using the multiparameter data, the ability to “see” dikes in intense alteration (chloritite) zones, and the ability to differentiate between visually similar less altered lithologies based on the portable XRF data.

 

Maars-diatreme volcanoes in Argentina and MontanaQuaternary basalitc maars and Tertiary ultramafic diatremes were studied in Argentina and Montana, respectively. Volcanic architecture of the Matagami mining camp, Abitibi Subprovince, Quebec

The Matagami mining camp in the north-central portion of the Abitibi Greenstone Belt in Quebec contains numerous VMS deposits and has the potential for several more discoveries. Active exploration by the private sector is ongoing. A PhD project was aimed at reconstructing the volcanic architecture of the camp to help mineral exploration.

 

IOCG systems in the Great Bear magmatic zone

The Geological Survey of Canada’s Great Bear/IOCG project focused on developing an exploration framework for polymetallic iron oxide copper-gold (IOCG) deposits in the Great Bear magmatic zone, a north-trending 450 km-long, volcano-plutonic belt between Great Slave and Great Bear lakes in the Northwest Territories. Two graduate projects on the mineralogy and geochemistry of IOCG alteration were completed at INRS/GSC-Quebec.

 

Volcanic architecture of the Lemoine Member (Waconichi Formation), Chibougamau area, Abitibi Subprovince, Quebec

We studied the Waconichi Formation on the Lemoine property in the Chibougamau area. The goal of the MSc project was to better understand the volcanology, chemo-stratigraphy and hydrothermal alteration on the property to help target future VMS exploration and learn about submarine felsic volcanism in the Archean.

 

Multi-sensor core logging in the Chibougamau area

The Mobile laboratory for the physical, chemical and mineralogical characterization of rocks was employed in the Chibougamau area. We studied the Waconichi and other formations north and south of the Lac Dore Complex.

 

Geochemistry of volcanic rocks in the Blake River Group, Abitibi Subprovince, Quebec

The goal of this project was to use existing and new geochemistry to improve the stratigraphy of the Blake River Group at a regional scale.

 

Geology of the Lalor gold-rich VMS deposit, Snow Lake, Manitoba

The gold-rich Lalor VMS deposit is located in the Snow Lake camp. One PhD student and one MSc student have documented the geology, geochemistry, stratigraphy, structure, hydrothermal alteration and mineralization at Lalor.

 

Improving core logging with the INRS mobile laboratory

Exploration drilling is expensive, and the drill cores are under-utilized. The Mobile laboratory for the physical, chemical and mineralogical characterization of rocks was used in Matagami (VMS mining camp, Abitibi Greenstone Belt) for a two year multi-sensor core logging project, funded by FRQNT. We aimed to improve the laboratory and data interpretation methods. Specifically developed geochemical and mineralogical vectors towards ore, and apllied multi-variate statistical methods. One MSc student and one research professionals were involved.

 

Volcanology of the Cathedral Cliff diatreme, Navajo volcanic field, New Mexico

The Cathedral Cliff diatreme in the Navajo volcanic field, New Mexico, USA, was an excellent locality to examine the transition from upper diatreme to lower diatreme in detail, as part as an MSc project.

 

Geology of the Horne #5 VMS deposit

The Horne deposit is one of the largest gold-rich VMS deposits in the world. The mine was active from 1927 to 1976. Falco Resources is now exploring the adjacent Horne #5 deposit. The general objective of this project was to investigate the age, composition and style of the Zone 5 mineralized zones, and to establish the controls on gold distribution, contributing to a better understanding of the Horne deposit genesis. This was done by MSc student Alexandre Krushnisky, who was supervised by Patrick Mercier-Langevin (GSC) and myself.

 

The Colomb-Chaboullié greenstone belt, James Bay, Quebec

The Colomb-Chaboullié greenstone belt is situated in the contact region between the Opatica and Nemiscau Ssubprovinces of the Superior Province. The MSc project of Sarah Galloway aimed to improve our volcanological, stratigraphic and geochemical understanding of the greenstone belt.

Education

  • Ph.D. Geology (Volcanology), University of Otago , New-Zeland
  • M.Sc. Earth Sciences (Economic geology), Université du Québec in Montréal
  • B.Eng. Geological Engineering, Université du Québec in Chicoutimi

 

Work Experience

  • 2016, Queensland University of Technology (Australia), visiting scientist2007-now, INRS-ETE, Research Professor
  • 2006-2007, Geological Survey of Canada, Postdoctoral Researche
  • 2006, University of Ottawa, Lecturer
  • 2005, University of Würzburg (Germany), Invited Researcher
  • 2000, 2001, Molycorp Inc. (USA), Mining geologist
  • 1998, 1999, UQAT (for Natural Resources Québec): geologist & assistant geologist

Volcanology and mineral exploration (GEO1301)

Description: Physical and chemical properties of magmas; lava flows and lava domes; explosive eruptions: processes and products; volcanic edifices; submarine and subglacial volcanism; hydrothermal activity; modification of volcanic rocks (diagenesis, metamorphism, hydrothermal alteration); applications of volcanology to mineral exploration: nickel sulfide deposits, volcanogenic massive sulfide deposits, kimberlites.
Prof. in charge: P-S Ross

 

Metallogeny (GLG64877)

Description: Metallogeny is the study of the genetic processes responsible for generation of mineral deposits. Types of deposits covered include Pb-Zn-Cu in sedimentary basins; magmatic Ni-Cu; IOCG; volcanogenic massive sulfide deposits; gold; porphyry deposits.
Prof. in charge: Dr Georges Beaudoin, Université Laval

 

Geological fieldtrip (GEO991)

Description: in fall 2019 I took students to the Abitibi Greenstone Belt to examine submarine volcanic rocks and VMS environments.

Publications

Guiraud J, Tremblay A, Jébrak M, Ross P-S, Lefrançois R (2020) Stratigraphic setting and timing of the Montagne d’Or deposit, a unique Rhyacian Au-rich VMS deposit of the Guiana Shield, French Guiana. Precamb. Res. 337:article 105551

Schnitzler N, Ross P-S, Gloaguen E (2019) Using machine learning to estimate a key missing geochemical variable in mining exploration: application of the Random Forest algorithm to multi-sensor core logging data: J Geochem Explor 205:article 106344

Ross P-S, Bourke A, Schnitzler N, Conly A (2019) Exploration vectors from near infrared spectrometry near the McLeod VMS deposit, Matagami district, Québec. Econ. Geol. 114:613-638

Galloway S, Ross P-S, Bandyayera D, Daoudene Y (2019) Contemporaneously erupted tholeiitic and calc-alkaline magmas in the Archean Colomb-Chaboullié greenstone belt, James Bay, Quebec: Petrologic implications. Precamb. Res. 331:article 105363

Ross P-S, Boulerice A, Mercier-Langevin P, McNicoll V (2019) Volcanology, chemo-stratigraphy, geochronology, hydrothermal alteration and VMS potential of the Lemoine Member of the Waconichi Formation, Chibougamau district, Abitibi greenstone belt, Québec. Mineralium Deposita DOI 10.1007/s00126-019-00884-6

Ross P-S (2019) Domaine Nord : protocole analytique pXRF pour utilisation pendant l’été 2019. Ministère de l’Énergie et des Ressources naturelles (Québec), rapport MB 2019-04, 34 p.

Latutrie B, Ross P-S (2019) Transition zone between the upper diatreme and lower diatreme: origin and significance at Round Butte, Hopi Buttes volcanic field, Navajo Nation, Arizona. Bull. Volc. 81:26 doi:10.1007/s00445-019-1285-x

Bélanger C, Ross P-S (2018) Origin of nonbedded pyroclastic rocks in the Cathedral Cliff diatreme, Navajo volcanic field, New Mexico. Bull. Volc. 80:article 61

Debreil J-A, Ross P-S, Mercier-Langevin P (2018) The Matagami district, Abitibi Greenstone Belt, Canada: volcanic controls on Archean volcanogenic massive sulfide deposits associated with voluminous felsic volcanism. Econ. Geol. 113:891-910

Caté A, Schetselaar E, Mercier-Langevin P, Ross P-S (2018) Classification of lithostratigraphic and alteration units from drillhole lithogeochemical data using machine learning: A case study from the Lalor volcanogenic massive sulphide deposit, Snow Lake, Manitoba, Canada. J. Geochem. Explor. 188:216-228

Galloway S, Ross P-S, Bandyayera D, Daoudene Y (2018) Chimico-stratigraphie volcanique et minéralisation volcanogène de la ceinture archéenne de Colomb-Chaboullié, Baie James. Ministère de l’Énergie et des Ressources naturelles du Québec, MB 2018-06, 32 p.

Valentine GA, White JDL, Ross P-S, Graettinger AH, Sonder I (2017) Updates to concepts on phreatomagmatic maar-diatremes and their pyroclastic deposits. Frontiers in Earth Science 5(68), DOI 10.3389/feart.2017.00068

Fresia B, Ross P-S, Gloaguen E, Bourke A (2017) Lithological discrimination based on statistical analysis of multi-sensor drill core logging data in the Matagami VMS district, Quebec, Canada. Ore Geol. Rev. 80:552–563

Ross P-S, Bourke A (2017) High-resolution gamma ray attenuation density measurements on mining exploration drill cores, including cut cores. J. Apl. Geophys. 136:262-268

Ross P-S, Carrasco-Núñez G, Hayman P (2017) Felsic maar-diatreme volcanoes: a review. Bull. Volc. 79: article 20

Galloway S, Ross P-S, Bandyayera D, Daoudene Y (2017) The volcanic stratigraphy of the Colomb-Chaboullie greenstone belt and the emplacement context of the volcanogenic massive sulphides, James Bay: preliminary results. Ministère de l’Énergie et des Ressources naturelles du Québec, rapport MB 2017-10, 18 p

Ross P-S, Bourke A, Mercier-Langevin P, Lépine S, Leclerc F, Boulerice A (2016) High-resolution physical properties, geochemistry and alteration mineralogy for the host rocks of the Archean Lemoine auriferous VMS deposit, Canada. Econ. Geol. 111:561–1574

Macorps E, Graettinger AH, Valentine GA, Ross P-S, White JDL, Sonder I (2016) The effects of the host-substrate properties on maar-diatreme volcanoes: experimental evidence. Bull. Volc. 78:1-12

Bourke A, Ross P-S (2016) Portable X-ray fluorescence measurements on exploration drill cores: comparing performance on unprepared cores and powders for “whole-rock” analysis. Geochemistry: Exploration, Environment, Analysis 16:147-157

Ross P-S, Schnitzler N, Bourke A (2016) Analyse multiparamétrique à haute résolution de carottes  de forage dans la région de Matagami 2014-2015, résultats préliminaires. Ministère de l’Énergie et des Ressources naturelles du Québec, rapport MB 2016-17, 60 p.

Graettinger AH, Valentine GA, Sonder I, Ross P-S, White JDL (2015) Facies distribution of ejecta in analog tephra rings from experiments with single and multiple subsurface explosions. Bull. Volc. 77:Article 66

Valentine GA, Graettinger AH, Macorps E, Ross P-S, White JDL, Döhring E, Sonder I (2015) Experiments with vertically- and laterally-migrating subsurface explosions with applications to the geology of phreatomagmatic and hydrothermal explosion craters and diatremes. Bulletin of Volcanology 77:Art. 15

Ross P-S, Mercier-Langevin P (2014) The volcanic setting of VMS and SMS deposits: a review. Geoscience Canada, in press, DOI 10.12789/geocanj.2014.41.045

Graettinger AH, Valentine GA, Sonder I, Ross P-S, White JDL, Taddeucci J (2014) Maar-diatreme geometry and deposits: subsurface blast experiments with variable explosion depth. Geochemistry, Geophysics, Geosystems 15, DOI 10.1002/2013GC005198

Delpit S, Ross P-S, Hearn BC (2014) Deep-bedded ultramafic diatremes in Missouri River Breaks volcanic field, Montana, USA: 1 km of syn-eruptive subsidence. Bulletin of Volcanology 76:Art. 832

Ross P-S, Bourke A, Fresia B (2014) Improving lithological discrimination in exploration drill-cores using portable X-ray fluorescence measurements: (1) testing three Olympus Innov-X analysers on unprepared cores. Geochemistry: Exploration, Environment, Analysis, DOI 10.1144/geochem2012-163

Ross P-S, Bourke A, Fresia B (2014) Improving lithological discrimination in exploration drill-cores using portable X-ray fluorescence measurements: (2) applications to the Zn-Cu Matagami mining camp, Canada. Geochemistry: Exploration, Environment, Analysis, DOI 10.1144/geochem2012-164

McNicoll V., Goutier J, Dubé B, Mercier-Langevin P, Ross P-S, Dion C, Monecke T, Legault M, Percival J, Gibson H (2014)  U-Pb geochronology of the Blake River Group, Abitibi Greenstone Belt, Quebec, and implications for base metal exploration. Economic Geology 109, 27-59

Rogers R, Ross P-S, Goutier J, Mercier-Langevin P (2014) Using physical volcanology, chemical stratigraphy, and pyrite geochemistry for volcanogenic massive sulfide exploration: an example from the Blake River Group, Abitibi Greenstone Belt. Economic Geology 109, 61-88

Ross P-S, McNicoll VJ, Debreil JA, Carr P (2014) Precise U-Pb geochronology of the Matagami mining camp, Abitibi Greenstone Belt, Quebec: stratigraphic constraints and implications for volcanogenic massive sulfide exploration. Economic Geology 109, 89-101

Ross P-S, Bourke A, Leclerc F, Boulerice A (2014) Analyse multiparamétrique à haute résolution de carottes de forage dans la région de Chibougamau 2012-2014, rapport final. Ministère de l’Énergie et des Ressources naturelles, Québec, rapport MB 2014-05, 128 p.

Sterckx S, Ross P-S, Goutier J (2014) Géochimie des roches volcaniques archéennes du Groupe de Blake River, Sous-province de l’Abitibi, Québec : composition des échantillons « frais ». Ministère de l’Énergie et des Ressources naturelles, Québec, rapport MB 2014-32, 23 p.

Ross P-S, White JDL, Valentine GA, Taddeucci J, Sonder I, Andrews RG (2013) Experimental birth of a maar-diatreme volcano. J. Volcanol. Geotherm. Res., 260:1-12

Taddeucci J, Valentine GA, Sonder I, White JDL, Ross P-S, Scarlato P (2013) The effect of pre-existing craters on the initial development of explosive volcanic eruptions: an experimental investigation. Geophys. Res. Lett. 40:507-510

Ross P-S, Bourke A, Leclerc F (2013) Analyse multiparamétrique à haute résolution de carottes de forage dans la région de Chibougamau 2012-2013. Ministère des Ressources naturelles (Québec), rapport MB 2013-07, 132 p.

Ross P-S, Bourke A, Fresia B (2013) A multi-sensor logger for rock cores: Methodology and preliminary results from the Matagami mining camp, Canada. Ore Geol. Rev. 53:93-111

Caté A, Mercier-Langevin P, Ross P-S, Duff S, Hannington M, Dubé B, Gagné S (2013) Preliminary observations on the geological environment of the Paleoproterozoic auriferous volcanogenic massive sulphide deposit of Lalor, Snow Lake, Manitoba. Commission géologique du Canada, Dossier Public 7372, 13 p.

Sterckx S, Ross P-S, Goutier J (2013) Géochimie des roches volcaniques archéennes du Groupe de Blake River, Sous-province de l’Abitibi, Québec : rapport préliminaire. Ministère des Ressources naturelles du Québec, rapport MB 2013-09, 20 p.

Valentine GA, White JDL, Ross P-S, Amin J, Taddeucci J, Sonder I, Johnson PJ (2012) Experimental craters formed by single and multiple buried explosions and implications for volcanic craters with emphasis on maars. Geophys. Res. Lett. 39:Art. L20301

Landry B, Ross P-S (2012) Le volcanisme et les roches volcaniques. In: Landry B (ed) Notions de géologie. Modulo, p. 183-211

Ross P-S, Bourke A, Fresia B, Debreil J-A (2012) Analyse multiparamétrique à haute résolution de carottes de forage dans la région de Matagami 2010-2012, Rapport final. Ministère des Ressources naturelles et de la Faune (Québec), rapport MB 2012-05, 128 p.

Ross P-S (2012) Jacques-Marie Bardintzeff: Volcanologie. Bull. Volc. 74:613-615

Ross P-S, White JDL (2012) Quantification of vesicle characteristics in some diatreme-filling deposits, and the explosivity levels of magma-water interactions within diatremes. J. Volcanol. Geotherm. Res. 245-246:55-67

White, J., Ross, P.-S. (2011) Maar-diatreme volcanoes: a review. Journal of Volcanology and Geothermal Research, v. 201, p. 1-29   PDF

Ross, P.-S., Goutier, J., Mercier-Langevin, P., et Dubé, B. (2011) Basaltic to andesitic volcaniclastic rocks in the Blake River Group, Abitibi Greenstone Belt: 1. Mode of emplacement in three areas. Journal Canadien des Sciences de la Terre, v. 48, p. 728-756   PDF

Ross, P.-S., McNicoll, V., Goutier, J., Mercier-Langevin, P., et Dubé, B. (2011). Basaltic to andesitic volcaniclastic rocks in the Blake River Group, Abitibi Greenstone Belt: 2. Origin, geochemistry, and geochronology. Journal Canadien des Sciences de la Terre, v. 48, p. 757-777   PDF

Ross, P.-S., Delpit, S., Haller, M.J., Németh, K. et Corbella, H. (2011) Influence of the substrate on maar-diatreme volcanoes – an example of a mixed setting from the Pali Aike volcanic field, Argentina. Journal of Volcanology and Geothermal Research, v. 201, p. 253-271.   PDF

Mercier-Langevin, P., Goutier, J., Ross, P.-S., McNicoll, V., Monecke, T., Dion, C., Dubé, B., Thurston, P., Bécu, V., Gibson, H., Hannington, M., et Galley, A. (2011) The Blake River Group of the Abitibi Greenstone Belt and its unique VMS and gold-rich VMS endowment. Commission Géologique du Canada, Dossier Public 6869, 61 p.   PDF

Ross, P.-S., Bourke, A., et Fresia, B. (2011) Analyse multiparamétrique à haute résolution de carottes de forage dans la région de Matagami – Partie 1, Méthodologie et performance. (Québec). Ministère des Ressources naturelles et de la Faune (Québec), rapport MB 2011-02, 72 pp.   PDF

Ross, P.-S., Bourke, A., Fresia, B., et Debreil, J.-A. (2011). Analyse multiparamétrique à haute résolution de carottes de forage dans la région de Matagami – Partie 2, résultats préliminaires. Ministère des Ressources naturelles et de la Faune (Québec), rapport MB 2011-03, 32 pp   PDF

Ross, P.-S. (2010) The Baie D’Alembert showing, an example of base-metal mineralization in mafic to intermediate volcanic rocks of the Blake River Group, Abitibi Greenstone Belt, Quebec. Commission géologique du Canada, Recherches en Cours 2010-6, 12 pages.    PDF

Rogers, R., Ross, P.-S., Goutier, J., Lafrance, B., et Mercier-Langevin, P. (2010) Étude volcanologique et métallogénique d’un segment de la Formation d’Hébécourt, Sous-province de l’Abitibi : résultats préliminaires. Ministère des Ressources naturelles et de la Faune (Québec), rapport RP 2010-06, 11 pages.    PDF

Rogers, R., Ross, P.-S., Goutier, J., et Mercier-Langevin, P. (2010) Étude volcanologique et géochimique des roches volcaniques mafiques à intermédiaires du Groupe de Blake River entre les lacs McDiarmid et Hébécourt, Sous-province de l’Abitibi. Ministère des Ressources naturelles et de la Faune (Québec), rapport RP 2010-08, 11 pages.    PDF

Ross, P.-S., Goutier, J., Legault, M., Grunsky, E. et Dubé, B. (2009) New volcanological and geochemical observations from the Blake River Group, Abitibi Greenstone Belt, Ontario and Quebec: Tannahill Township and Lake Labyrinth. Commission géologique du Canada, Recherches en cours 2009-8, 26 pages.    PDF

Ross, P.-S. et Bédard, J.H. (2009) Magmatic affinity of modern and ancient subalkaline volcanic rocks determined from trace-element discriminant diagrams. Journal Canadien des Sciences de la Terre 46: 823-839.

McClintock, M., Ross, P.-S. et White, J.D.L. (2009) The importance of the transport system in shaping the growth and form of kimberlite volcanoes. Lithos 112(S): 465-472.

White, J.D.L., Bryan, S.E., Ross, P.-S., Self, S. et Thordarson, T. (2009) Physical volcanology of continental large igneous provinces: update and review. In: T. Thordarson, S. Self, G. Larsen, S.K. Rowland et A. Hoskuldsson (Eds), Studies in volcanology: the legacy of George Walker. Geological Society, London, pp. 291–321.

Mercier-Langevin, P., Ross, P.-S., Lafrance, B. et Dubé, B. (2008) Volcaniclastic rocks of the Bousquet scoriaceous tuff units north of the LaRonde Penna mine, Doyon-Bousquet-LaRonde mining camp, Abitibi Greenstone Belt, Quebec, Commission géologique du Canada, Recherches en cours 2008-11, 19 pages.    PDF

Ross, P.-S., Goutier, J., Percival, J.A., Mercier-Langevin, P. et Dubé, B. (2008) New volcanological and geochemical observations from the Blake River group, Abitibi Greenstone belt, Quebec : the D’Alembert tuff, the Stadacona unit, and surrounding lavas, Commission géologique du Canada, Recherches en cours 2008-17, 27 pages    PDF

Ross, P.-S., White, J.D.L. et McClintock, M. (2008) Geological evolution of the Coombs-Allan Hills area, Ferrar large igneous province, Antarctica: debris avalanches, mafic pyroclastic density currents, phreatocauldrons. Journal of Volcanology and Geothermal Research 172: 38-60.    PDF

Ross P.-S., White J.D.L., Zimanowski B et Büttner R (2008) Multiphase flow above explosion sites in debris-filled volcanic vents: insights from analogue experiments. Journal of Volcanology and Geothermal Research 178: 104-112.

Ross, P.-S., White, J.D.L., Zimanowski, B. et Buttner, R. (2008) Rapid injection of particles and gas into non-fluidized granular material, and some volcanological implications. Bulletin of Volcanology 70: 1151-1168.

Ross, P.-S., Goutier, J., McNicoll, V.J. et Dubé, B. (2008) Volcanology and geochemistry of the Monsabrais area, Blake River Group, Abitibi Greenstone Belt, Quebec: implications for volcanogenic massive sulphide exploration. Commission Géologique du Canada, Recherches en Cours 2008-1, 18 pages.    PDF

Goutier, J., Monecke, T., Ross, P.-S. et Dion, C. (2007) Volcanoclastites du groupe de Blake river et implications pour les SMV, Ministère des ressources naturelles et de la faune et Commission géologique du Canada, rapport GM 63072, 22 pages.

Ross, P.-S., Percival, J.A., Mercier-Langevin, P., Goutier, J., McNicoll, V.J. et Dubé, B. (2007) Intermediate to mafic volcaniclastic units in the peripheral Blake River Group, Abitibi Greenstone Belt: origin and implications for VMS exploration. Commission Géologique du Canada, Recherches en cours 2007-C3, 25 pages.    PDF

Ross, P.-S. et White, J.D.L. (2006) Debris jets in continental phreatomagmatic volcanoes: a field study of their subterranean deposits in the Coombs Hills vent complex, Antarctica. Journal of Volcanology and Geothermal Research 149: 62-84.    PDF

Ross, P.-S., et White, J.D.L. (2005) Unusually large clastic dykes formed by elutriation of a poorly sorted, coarser-grained source. Journal of the Geological Society [London] 162: 579-582.

Ross, P.-S., et White, J.D.L. (2005) Mafic, large-volume, pyroclastic density current deposits from phreatomagmatic eruptions in the Ferrar large igneous province. Journal of Geology 113: 627-649.

Ross, P.-S., Ukstins Peate, I., McClintock, M.K., Xu, Y.G., Skilling, I.P., White, J.D.L., et Houghton, B.F. (2005) Mafic volcaniclastic deposits in flood basalt provinces: a review. Journal of Volcanology and Geothermal Research 145: 281-314.

Reubi, O., Ross, P.-S. et White, J.D.L. (2005) Debris avalanche deposits associated with Large Igneous province volcanism: an example from the Mawson Formation, Central Allan Hills, Antarctica. Geological Society of America Bulletin 117: 1615–1628.    PDF

Ross, P.-S., Jébrak, M., Walker, B.M. (2002) Discharge of hydrothermal fluids from a magma chamber and concomitant formation of a stratified breccia zone at the Questa porphyry molybdenum deposit, New Mexico. Economic Geology 97: 1679-1699.