Presidential Thoughts for These Pandemic Times
Can Coeval Cordilleran Carbonatites Constrain Collisions
PGEs, Chalcophiles and Plume Evolution - Insights from the Columbia River Basalts
London 2021 - Virtual and Tangible Field Trips, Workshops and Short Courses
The Lifetime Legacy ofR. Frank Blackwood
2020 V4OLUME 7 Editor/Rédacteur en chef Publisher/Éditeur © Copyright 2020 Andrew Kerr Geological Association of Canada Geological Association of Canada/ Department of Earth Sciences Alexander Murray Bld., Rm ER4063 L’Association géologique du Canada Memorial University Memorial University of Newfoundland Except Copyright Her Majesty the Queen St. John's, NL, Canada, A1B 3X5 St. John’s, NL, Canada, A1B 3X5 in right of Canada 2020 where noted. E-mail: [email protected] Tel: (709) 864-7660 All rights reserved/ Fax: (709) 864-2532 Tous droits réservés Managing Editor/directrice de rédaction [email protected] Print Edition: ISSN 0315-0941 Cindy Murphy www.gac.ca Online Edition: ISSN 1911-4850 Department of Earth Sciences St. Francis Xavier University Volume 47 Antigonish, NS, Canada, B2G 2W5 E-mail: [email protected] A journal published quarterly by the Geological Association of Canada, incorporating the Proceedings. Publications Director/Directrice de Une revue trimestrielle publiée par l’Association géologique du Canada et qui en diffuse publications les actes. Karen Dawe Geological Association of Canada Subscriptions: Receiving four issues of Geoscience Canada per year for $50 is one St. John’s, NL, Canada, A1B 3X5 of the benefits of being a GAC member. To obtain institutional subscriptions, please Tel: (709) 864-2151 contact Érudit: www.erudit.org E-mail: [email protected] Abonnement: Recevoir quatre numéros par année pour 50,00 $ du magazine Geo- Copy Editors/Rédacteurs copie science est l’un des avantages réservés aux membres de l’AGC. Pour les abon- Janice Allen, Stephen Amor, nements institutionnels, s'il vous plaît contacter Érudit: www.erudit.org Lawson Dickson, Rob Raeside Photocopying: The Geological Association of Canada grants permission to individual Associate Editors/Rédacteurs associés scientists to make photocopies of one or more items from this journal for non-commer- Sandy Cruden, Fran Haidl, Jim Hibbard, John cial purposes advancing science or education, including classroom use. Other individ- Hinchey, Stephen Johnston, Fraser Keppie uals wishing to copy items from this journal must obtain a copying licence from Access Copyright (Canadian Copyright Licensing Agency), 69 Yonge Street, Suite 1100, Toron- Assistant Editors/Directeurs adjoints to, Ontario M5E 1K3, phone (647) 503-4664. This permission does not extend to other Columnist: Paul F. Hoffman kinds of copying such as copying for general distribution, for advertising or promotional - The Tooth of Time purposes, for creating new collective works, or for resale. Send permission requests to Outreach: Pierre Verpaelst (Québec) Geoscience Canada, at the Geological Association of Canada (address above). Beth Halfkenny (Ontario) Godfrey Nowlan (Prairies) La photocopie: L’Association géologique du Canada permet à tout scientifique, de Eileen van der Flier-Keller (BC) reprographier une ou des parties du présent périodique, pour ses besoins, à condition Sarah Laxton (North) que ce soit dans un but non-commercial, pour l’avancement de la science ou pour des Professional Affairs for Geoscientists: buts éducatifs, y compris l’usage en classe. Toute autre personne désirant utiliser des Oliver Bonham reproductions du présent périodique doit préalablement obtenir une licence à cet effet Views from Industry: Elisabeth Kosters d’Access Copyright (Canadian Copyright Licensing Agency), 69 Yonge Street, suite Series: 1100, Toronto, Ontario M5E 1K3, Tél.: (647) 503-4664. L’autorisation susmentionnée Andrew Hynes Series: Tectonic Processes: exclut toute autre reproduction, telle la reproduction pour fins de distribution générale, Stephen Johnston and Brendan Murphy de publicité ou de promotion, pour la création de nouveaux travaux collectifs ou pour la Classic Rock Tours: Andrew Kerr revente. Faites parvenir vos demandes d’autorisation à Geoscience Canada, au soin Climate and Energy: Andrew Miall de l’Association géologique du Canada (voir l’adresse indiquée ci-dessus). Economic Geology Models: Elizabeth Turner Geology and Wine Those wishing to submit material for publication in Geoscience Canada should Geoscience Medallist: Andrew Kerr refer to the Instructions to Authors on the journal's website, Great Canadian Lagerstätten: www.geosciencecanada.ca David Rudkin and Graham Young AUTHORS PLEASE NOTE: Great Mining Camps of Canada: Please use the web address http://journals.hil.unb.ca/index.php/GC/index for sub- Stephen McCutcheon missions; please do not submit articles directly to the editor. Heritage Stone: Dolores Pereira and Brian R. Pratt The Mission of the Geological Association of Canada is to facilitate the scientific well- Igneous Rock Associations: Jaroslav Dostal being and professional development of its members, the learned discussion of geo- Modern Analytical Facilities: Keith Dewing, science in Canada, and the advancement, dissemination and wise use of geosciences Robert Linnen and Chris R.M. McFarlane in public, professional and academic life. Articles in Geoscience Canada are freely Remote Predictive Mapping: available one year after their publication date, unless authors have arranged for imme- Jeff Harris and Tim Webster diate open access. Opinions expressed and interpretations presented are those of the Illustrator/Ilustrateur authors and do not necessarily reflect those of the editors, publishers and other contrib- utors. Your comments are welcome. Peter I. Russell, Waterloo, ON Translator/Traductrice Cover Image: View looking south of fieldwork at the Aley carbonatite complex, northeastern British Columbia, with the northern Rocky Mountain Main Ranges (Muskwa Range) in the Evelise Bourlon, Laggan, NS background. Photo credit: Duncan McLeish Typesetter/Typographe Bev Strickland, St. John’s, NL GEOSCIENCECANADA JOURNAL OF THE GEOLOGICAL ASSOCIATION OF CANADA JOURNAL DE L’ASSOCIATION GÉOLOGIQUE DU CANADA
PRESIDENTIAL ADDRESS 167 Changing Trends and Rethinking Geoscience Education in the Context of a Global Crisis K. Bethune
ANDREW HYNES SERIES: TECTONIC PROCESSES 171 Stratigraphy and U–Pb Zircon–Titanite Geochronology of the Aley Carbonatite Complex, Northeastern British Columbia: Evidence for Antler-Aged Orogenesis in the Foreland Belt of the Canadian Cordillera D.F. McLeish, S.T. Johnston, R.M. Friedman, and J.K. Mortensen
SERIES 187 Igneous Rock Associations 27. Chalcophile and Platinum Group Elements in the Columbia River Basalt Group: A Model for Flood Basalt Lavas S.P. Reidel and D.B. Barnett
GAC–MAC FIELD GUIDE SUMMARY 215 London 2021 GAC–MAC Joint Annual Meeting Field Trips P. Corcoran and P. McCausland
ANNOUNCEMENTS 219 London 2021 GAC–MAC Joint Annual Meeting Workshops and Short Courses R.L. Flemming
A TRIBUTE 223 R. Frank Blackwood: 1950–2020 R.J. Wardle
2020 VOLUME 47 GSCNA7 47 167-226 PRINT EDITION ISSN 0315-0941 ONLINE EDITION ISSN 1911-4850