Editor/Rédacteur en chef

Brendan Murphy Department of Earth Sciences St. Francis Xavier University Antigonish, NS B2G 2W5 E-mail: bmurphy@stfx.ca

Managing Editor/directrice de rédaction

Cindy Murphy E-mail: cmurphy@stfx.ca

Publications Director/Directrice de publications Karen Dawe Geological Association of Canada St. John’s NL Canada A1B 3X5 Tel: (709) 864-2151 E-mail: kfmdawe@mun.ca

Copy Editors/Rédacteurs copie

Roger Macqueen Rob Raeside Paul Robinson Reginald Wilson

Associate Editors/Rédacteurs associés

Sandy Cruden Fran Haidl Jim Hibbard John Hinchey Stephen Johnston Fraser Keppie Joe MacQuaker

Assistant Editors/Directeurs adjoints

Columnist: Paul F. Hoffman - The Tooth of Time Outreach: Amanda McCallum (Atlantic)

Pierre Verpaelst (Québec)

Beth Halfkenny (Ontario) Godfrey Nowlan (Prairies) Eileen van der Flier-Keller (BC) Sarah Laxton (North) Professional Affairs for Geoscientists:

Oliver Bonham Views from Industry: Elisabeth Kosters Series: Canada GEESE (Geospatial Earth and

Environmental Science Explorations):

Declan G. De Paor Climate and Energy: Andrew Miall Economic Geology Models: David Lentz and Elizabeth Turner Geology and Wine: Roger Macqueen Great Canadian Lagerstätten:

David Rudkin and Graham Young Great Mining Camps of Canada:

Robert Cathro and Stephen McCutcheon Igneous Rock Associations: Jaroslav Dostal Modern Analytical Facilities: Keith Dewing,

Robert Linnen and Chris R.M. McFarlane Remote Predictive Mapping:

Jeff Harris and Tim Webster

Illustrator/Ilustrateur

Peter I. Russell, Waterloo ON

Translator/Traducteur

Jean Alfred Renaud, Sherbrooke QC

Typesetter/Typographe

Bev Strickland, St. John’s NL

Publisher/Éditeur

Geological Association of Canada c/o Department of Earth Sciences Memorial University of Newfoundland St. John’s NL Canada A1B 3X5 Tel: (709) 864-7660 Fax: (709) 864-2532 gacpub@mun.ca gac@mun.ca www.gac.ca

© Copyright 2013 Geological Association of Canada/ L’Association géologique du Canada Except Copyright Her Majesty the Queen in right of Canada 2013 where noted.

All rights reserved/

Tous droits réservés Print Edition: ISSN 0315-0941 Online Edition: ISSN 1911-4850

Volume 40

A journal published quarterly by the Geological Association of Canada, incorporating the Proceedings.

Une revue trimestrielle publiée par l’Association géologique du Canada et qui en diffuse les actes.

Subscriptions: Receiving four issues of Geoscience Canada per year for $40 is one of the benefits of being a GAC member. To obtain institutional subscriptions, please contact Érudit: www.erudit.org

Abonnement: Recevoir quatre numéros par année pour 40,00 $ du magazine Geo-science est l’un des avantages réservés aux membres de l’AGC. Pour les abonnements institutionnels, s'il vous plaît contacter Érudit: www.erudit.org

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AUTHORS PLEASE NOTE:

Please use the web address http://journals.hil.unb.ca/index.php/GC/index for submissions; please do not submit articles directly to the editor.

The Mission of the Geological Association of Canada is to facilitate the scientific well-being and professional development of its members, the learned discussion of geo-science in Canada, and the advancement, dissemination and wise use of geo-sciences in public, professional and academic life.

Opinions expressed and interpretations presented are those of the authors and do not necessarily reflect those of the editors, publishers and other contributors. Your comments are welcome.

G EOSCIENCE C ANADA

J OURNAL OF THE G EOLOGICAL A SSOCIATION OF C ANADA J OURNAL DE L’ A SSOCIATION G ÉOLOGIQUE DU C ANADA

Editorial 1

J.B. Murphy

Geoscience Debate 3

Caribbean Geology: Extended and Subsided Continental Crust Sharing History with Eastern North America, the Gulf of Mexico, the Yucatán Basin and Northern South America

K.H. James

The Rationale and Essential Elements for the New ‘Pirate’ Model of Caribbean 9 Tectonics

F. Keppie

Column 17

The Tooth of Time:

Henno Martin

P.F. Hoffman

Articles 32

Sea-cliff Erosion with Rising Sea-Level along Shores Exposing Glacial

Material in Atlantic Canada: The Effect of Bedrock Slope and an Example from Isle Madame, Nova Scotia

E.R. Force

Metallogenic Evolution of the Mackenzie and Eastern Selwyn Mountains of 40 Canada’s Northern Cordillera, Northwest Territories: A Compilation and Review

L. Ootes, S.A. Gleeson, E. Turner, K. Rasmussen, S. Gordey, H. Falck, E. Martel, and K. Pierce

2013 VOLUME 40 GSCNA7 40 1-70

PRINT EDITION ISSN 0315-0941

ONLINE EDITION ISSN 1911-4850