DOCSLIB.ORG

View Abstracts

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

WELCOME TO ST. JOHN’S 2012 / BIENVENUE À ST. JOHN’S 2012 On behalf of the St. John’s 2012 local organizing committee, Au nom du comité organisateur de St. John’s 2012, nous we welcome delegates to North America’s oldest city, St. souhaitons aux participants la bienvenue à la plus ancienne John’s, for the joint annual meeting of the Geological Asso- ville d’Amérique du Nord, St. John’s, à l’occasion de la réu- ciation of Canada (GAC®) and the Mineralogical Association nion annuelle conjointe de l'Association géologique du of Canada (MAC). Returning once again to Newfoundland Canada (AGC®) et l'Association minéralogique du Canada and Labrador, delegates and guests will enjoy not only an ex- (AMC). En revenant une fois de plus à Terre-Neuve-et- ceptional technical program of outstanding geoscience, but Labrador les participants et leurs invités pourront encore prof- also the rich-culture, friendly faces and rugged landscapes iter non seulement d’un programme d’activités professionn- that this historic city has to offer. elles géoscientifique exceptionnel, mais aussi de la riche cul- ture, de l’accueil de gens sympathiques et des paysages The meeting is being held at the Delta St. John’s Hotel and sauvages particuliers à cette ville historique. Conference Centre. The location provides delegates with the convenience of a compact conference venue, located in the La réunion se tiendra à l'hôtel Delta de St. John’s et à son cen- heart of downtown and with a spectacular view of the Nar- tre de conférence. L'emplacement offre aux délégués l’avan- rows. We hope you will take the opportunity to explore the tage d’un lieu de conférence compact situé au cœur du history, culture, unique architecture, culinary pleasures and centre-ville avec une vue spectaculaire sur le Narrows. Nous colourful characters that the city has to offer. espérons que vous profiterez de l'occasion pour vous enquérir de l'histoire, de la culture, de l'architecture unique, et que vous The meeting’s motto, Geoscience at the Edge, alludes not goûterez les plaisirs culinaires uniques et les personnages only to the geographic location of the host city, St. John's, sit- hauts en couleur de la ville. uated at the eastern edge of the North American craton, but also to the leading geoscience research and ideas being pre- Le thème de la réunion, Géosciences de pointe, fait allusion sented at the meeting. Whether your focus is on petroleum, non seulement à l'emplacement géographique de la ville hôte, base or precious metals, geophysics, bedrock or seafloor map- St. John’s, situé à l'extrémité orientale du craton de ping, climate change, or geotourism, St. John's 2012 will pres- l'Amérique du Nord, mais également à la recherche géosci- ent the latest research and technical developments in the Earth entifiques et aux idées de pointe présentées à de la réunion. Sciences. The technical program contains three symposia and Que vous vous intéressiez au pétrole, aux métaux de base ou twenty one special sessions featuring a cross section of geo- précieux, à la géophysique, à la cartographie des affleure- science research from Economic Geology to soft rock ses- ments ou des fonds marins, au changement climatique, ou au sions including shale gas, facies models, provenance géotourisme, St. John’s 2012 présentera les dernières determination, geohazard assessment and oil spill prevention. recherches et développements techniques en sciences de la The program has a short course and a diverse offering of Terre. Le programme d’activités professionnelles comprend twelve field trips. The meeting contains an expansive out- trois symposiums et vingt-et-une séances spécialisées don- reach program that features events and activities that aim to neront un aperçu des recherches géoscientifiques en cours, en raise awareness of the Earth Sciences to the general public, géologie économique, sur les roches non-consolidées, les gaz as well as to students and teachers. de schiste, les modèles de faciès, la détermination des matéri- aux d’origine, l'évaluation des géorisques et la prévention des St. John’s 2012 not only has an excellent technical program, déversements de pétrole. Le programme d’activités comprend but also a diverse special events program. Join us for the Gala un cours intensif ainsi qu’une fourchette diversifiée de douze Banquet, which features fine dining and memorable New- excursions de terrain. La réunion comprend un ambitieux pro- foundland entertainment. Other social events include: a lob- gramme de sensibilisation qui propose des événements et des ster dinner, a chance for lobster lovers to enjoy the finest that activités qui visent à sensibiliser aux sciences de la Terre le the North Atlantic has to offer; and a Pub Night, an opportu- grand public, les étudiants et les enseignants. nity to savour local microbrew while enjoying the sights and St. John’s 2012 a non seulement un excellent programme sounds of historic downtown St. John’s. d’activités professionnelles, mais aussi un programme d’événements spéciaux diversifié. Soyez des nôtres à la soirée We hope you enjoy the rich culture and breathtaking beauty gala, qui propose un dîner raffiné et un divertissement terre- that the City of Legends has to offer. neuvien mémorable. Les autres activités sociales compren- nent entre autre: un dîner de homard, et une soirée au pub. ® Alana Hinchey, GAC Chair Nous espérons que vous apprécierez la richesse culturelle et la Steve Piercey, MAC Co-Chair beauté à couper le souffle de St. John’s, cette ville de légendes. Alana Hinchey, AGC® Président Steve Piercey, AMC Co-président LOCAL ORGANIZING COMMITTEE COMITÉ ORGANISATEUR LOCAL GAC Chair / Présidente Alana Hinchey GSNL MAC Co-Chair / Co-président Steve Piercey MUN General Secretary / Secrétaire général Tim van Nostrand GSNL Finance / Finance Greg Sparkes GSNL Fund Raising / Financement Annie Parrell Chair/responsible ENERGY James Conliffe Co-chair/co-responsible GSNL Registration / Inscription Kelly Batten-Hender Chair/responsible CNLOPB Stephanie Johnson Co-chair/co-responsible CNLOPB Gerry Kilfoil Co-chair/co-responsible GSNL Promotion / Promotion Lori Cook Chair/responsible ENERGY Amanda McCallum Co-chair/co-responsible GSNL Accommodations / Hébergement Dawn Evans-Lamswood Chair/responsible VALE Derek Wilton Co-chair/co-responsible MUN Exhibits / Expositions Greg Stapleton Chair/responsible GSNL Publications / Publications Chris Pereira Chair/responsible GSNL Andrea Mills Co-chair/co-responsible MINES Field Trips / Excursions Andy Kerr Chair/responsible GSNL Eric Albrechtsons Co-chair/co-responsible SE Short Courses / Cours intensifs Graham Layne Chair/responsible MUN Paul Sylvester Co-chair/responsible MUN Social Events / Activités récréatives Jennifer Smith Chair/responsible GSNL Technical Program / Joe MacQuaker Chair/responsible EM Programmes scientifique Hamish Sandeman Co-chair/co-responsible GSNL Technical Services / Larry Nolan Chair/responsible GSNL Services techniques Colin Farquharson Co-chair/co-responsible MUN Outreach / Amanda McCallum Chair/responsible GSNL Sensibilisation et formation Dianne Noseworthy Co-chair/co-responsible CNLOPB Website/Email / Steve Amor Chair/responsible GSNL Site Internet, adrélee, webmestre Volunteer Coordinator Monica Squires Chair/responsible GSNL Accompanying guest / Tony Burgess Chair/responsible MINES Programme d’activités des invités Brad Way Co-chair/co-responsible MINES GSNL Geological Survey of Newfoundland and Labrador, Department of Natural Resources MUN Memorial University of Newfoundland MINES Mines Branch, Newfoundland and Labrador Department of Natural Resources CNLOBP Canada-Newfoundland and Labrador Offshore Petroleum Board ENERGY Energy Branch, Newfoundland and Labrador Department of Natural Resources EM ExxonMobil SE Suncor Energy VALE VALE TABLE OF CONTENTS TABLE DES MATIÈRES ABSTRACTS / RÉSUMÉS............................................................................................................... 1 AUTHOR INDEX / INDEX DES AUTEURS .................................................................................. 157 Abstracts can also be searched using this link / Les résumés peuvent aussi être consultes sur le site suivant : http://gac.esd.mun.ca/gac_2012/search_abs/program.asp Graphic design / Graphisme: Beth Oberholtzer and Charles Newhook Layout / Mise en page: Joanne Rooney Database management / Gestion de banque de données Gerry Kilfoil THERMAL HISTORY OF THE KAPOETA METEORITE: A from 9-25% of parent vesicle size) and numerous specimens resembling STUDY OF Fe2+-Mg ORDERING IN ORTHOPYROXENE BY Caudosphaera, though these specimens possess dark, globose spheroidal SINGLE-CRYSTAL XRD AND MÖSSBAUER SPECTROSCOPY vesicles that are not distinguished in Caudosphaera descriptions from Abdu, Y.A. and Hawthorne, F.C., Department of Geological Russia. Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Spheroids and filaments are found throughout the entire microfossil [email protected] record, but this assemblage has a typical Mesoproterozoic aspect. Tappania is known from the Mesoproterozoic Roper, Ruyang (China), Vindhyan Kapoeta is an achondrite meteorite that belongs to the howardite group. (India), and Kamo (Russia) Groups, but is conspicuous in the Roper. Howardites, eucrites, and diogenites meteorites (HED) are believed to Roper is also noted for the presence of Satka, which has been previously originate from igneous processes on the asteroid 4 Vesta. Kapoeta is documented in the Chamberlain, and for fused filaments which may characterized as a polymict breccia
Recommended publications
  • The Politics of Revolutionary Anti-Imperialism

    The Politics of Revolutionary Anti-Imperialism

    FIRE THE POLITICS OF REVOLUTIONARY ANTI-IMPERIALISM ---- - ... POLITICAL STATEMENT OF THE UND£ $1.50 Prairie Fire Distributing Lo,rnrrntte:e This edition ofPrairie Fire is published and copyrighted by Communications Co. in response to a written request from the authors of the contents. 'rVe have attempted to produce a readable pocket size book at a re'ls(m,tbl.e cost. Weare printing as many as fast as limited resources allow. We hope that people interested in Revolutionary ideas and events will morc and better editions possible in the future. (And that this edition at least some extent the request made by its authors.) PO Box 411 Communications Co. Times Plaza Sta. PO Box 40614, Sta. C Brooklyn, New York San FrancisQ:O, Ca. 11217 94110 Quantity rates upon request to Peoples' Bookstores and Community organiza- tlOBS. PRAIRIE FIRE THE POLITICS OF REVOLUTIONARY ANTI-IMPERIALISM POLITICAL STATEMENT , OF THE WEATHER Copyright © 1974 by Communications Co. UNDERGROUND All rights reserved The pUblisher's copyright is not intended to discourage the use ofmaterial from this book for political debate and study. It is intended to prevent false and distorted reproduction and profiteering. Aside from those limits, people are free to utilize the material. This edition is a copy of the original which was Printed Underground In the US For The People Published by Communications Co. 1974 +h(~ of OlJr(1)mYl\Q~S tJ,o ~Q.Ve., ~·Ir tllJ€~ it) #i s\-~~\~ 'Yt)l1(ch ~, \~ 10 ~~\ d~~~ee.' l1~rJ 1I'bw~· reU'w) ~it· e\rrp- f'0nit'l)o yralt· ~YZlpmu>I')' ca~-\e.v"C2lmp· ~~ ~[\.ll10' ~li~ ~n.
  • From the Early Paleozoic Platforms of Baltica and Laurentia to the Caledonide Orogen of Scandinavia and Greenland

    From the Early Paleozoic Platforms of Baltica and Laurentia to the Caledonide Orogen of Scandinavia and Greenland

    44 by David G. Gee1, Haakon Fossen2, Niels Henriksen3, and Anthony K. Higgins3 From the Early Paleozoic Platforms of Baltica and Laurentia to the Caledonide Orogen of Scandinavia and Greenland 1 Department of Earth Sciences, Uppsala University, Villavagen Villavägen 16, Uppsala, SE-752 36, Sweden. E-mail: [email protected] 2 Department of Earth Science, University of Bergen, Allégaten 41, N-5007, Bergen, Norway. E-mail: [email protected] 3 The Geological Survey of Denmark and Greenland, Øster Voldgade 10, Dk 1350 Copenhagen, Denmark. E-mail: [email protected], [email protected] The Caledonide Orogen in the Nordic countries is exposed in Norway, western Sweden, westernmost Fin- Introduction land, on Svalbard and in northeast Greenland. In the The Caledonide Orogen is preserved on both sides of the North mountains of western Scandinavia, the structure is dom- Atlantic Ocean, in the mountains of western Scandinavia and north- inated by E-vergent thrusts with allochthons derived eastern Greenland; it continues northwards from northern Norway, across the Barents Shelf and Svalbard to the edge of the Eurasian from the Baltoscandian platform and margin, from out- Basin (Figure 1). The orogen is notable for its thrust systems, board oceanic (Iapetus) terranes and with the highest E-vergent in Scandinavia and W-vergent in Greenland. The width of the orogen, prior to Cenozoic opening of the North Atlantic, was in thrust sheets having Laurentian affinities. The other the order of at least 700–800 km, the deformation fronts on both side of this bivergent orogen is well exposed in north- sides of the orogen being defined by thrusts that, in the Devonian, eastern Greenland, where W-vergent thrust sheets probably reached substantially further onto the foreland platforms than they do today.
  • Assembly, Configuration, and Break-Up History of Rodinia

    Assembly, Configuration, and Break-Up History of Rodinia

    Author's personal copy Available online at www.sciencedirect.com Precambrian Research 160 (2008) 179–210 Assembly, configuration, and break-up history of Rodinia: A synthesis Z.X. Li a,g,∗, S.V. Bogdanova b, A.S. Collins c, A. Davidson d, B. De Waele a, R.E. Ernst e,f, I.C.W. Fitzsimons g, R.A. Fuck h, D.P. Gladkochub i, J. Jacobs j, K.E. Karlstrom k, S. Lu l, L.M. Natapov m, V. Pease n, S.A. Pisarevsky a, K. Thrane o, V. Vernikovsky p a Tectonics Special Research Centre, School of Earth and Geographical Sciences, The University of Western Australia, Crawley, WA 6009, Australia b Department of Geology, Lund University, Solvegatan 12, 223 62 Lund, Sweden c Continental Evolution Research Group, School of Earth and Environmental Sciences, University of Adelaide, Adelaide, SA 5005, Australia d Geological Survey of Canada (retired), 601 Booth Street, Ottawa, Canada K1A 0E8 e Ernst Geosciences, 43 Margrave Avenue, Ottawa, Canada K1T 3Y2 f Department of Earth Sciences, Carleton U., Ottawa, Canada K1S 5B6 g Tectonics Special Research Centre, Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia h Universidade de Bras´ılia, 70910-000 Bras´ılia, Brazil i Institute of the Earth’s Crust SB RAS, Lermontova Street, 128, 664033 Irkutsk, Russia j Department of Earth Science, University of Bergen, Allegaten 41, N-5007 Bergen, Norway k Department of Earth and Planetary Sciences, Northrop Hall University of New Mexico, Albuquerque, NM 87131, USA l Tianjin Institute of Geology and Mineral Resources, CGS, No.
  • Safetaxi Americas Coverage List – 21S5 Cycle

    Safetaxi Americas Coverage List – 21S5 Cycle

    SafeTaxi Americas Coverage List – 21S5 Cycle Brazil Acre Identifier Airport Name City State SBCZ Cruzeiro do Sul International Airport Cruzeiro do Sul AC SBRB Plácido de Castro Airport Rio Branco AC Alagoas Identifier Airport Name City State SBMO Zumbi dos Palmares International Airport Maceió AL Amazonas Identifier Airport Name City State SBEG Eduardo Gomes International Airport Manaus AM SBMN Ponta Pelada Military Airport Manaus AM SBTF Tefé Airport Tefé AM SBTT Tabatinga International Airport Tabatinga AM SBUA São Gabriel da Cachoeira Airport São Gabriel da Cachoeira AM Amapá Identifier Airport Name City State SBMQ Alberto Alcolumbre International Airport Macapá AP Bahia Identifier Airport Name City State SBIL Bahia-Jorge Amado Airport Ilhéus BA SBLP Bom Jesus da Lapa Airport Bom Jesus da Lapa BA SBPS Porto Seguro Airport Porto Seguro BA SBSV Deputado Luís Eduardo Magalhães International Airport Salvador BA SBTC Hotéis Transamérica Airport Una BA SBUF Paulo Afonso Airport Paulo Afonso BA SBVC Vitória da Conquista/Glauber de Andrade Rocha Vitória da Conquista BA Ceará Identifier Airport Name City State SBAC Aracati/Aeroporto Regional de Aracati Aracati CE SBFZ Pinto Martins International Airport Fortaleza CE SBJE Comandante Ariston Pessoa Cruz CE SBJU Orlando Bezerra de Menezes Airport Juazeiro do Norte CE Distrito Federal Identifier Airport Name City State SBBR Presidente Juscelino Kubitschek International Airport Brasília DF Espírito Santo Identifier Airport Name City State SBVT Eurico de Aguiar Salles Airport Vitória ES *Denotes
  • QUALM; *Quoion Answeringsystems

    QUALM; *Quoion Answeringsystems

    DOCUMENT RESUME'. ED 150 955 IR 005 492 AUTHOR Lehnert, Wendy TITLE The Process'of Question Answering. Research Report No. 88. ..t. SPONS AGENCY Advanced Research Projects Agency (DOD), Washington, D.C. _ PUB DATE May 77 CONTRACT ,N00014-75-C-1111 . ° NOTE, 293p.;- Ph.D. Dissertation, Yale University 'ERRS' PRICE NF -$0.83 1C- $15.39 Plus Post'age. DESCRIPTORS .*Computer Programs; Computers; *'conceptual Schemes; *Information Processing; *Language Classification; *Models; Prpgrai Descriptions IDENTIFIERS *QUALM; *QuOion AnsweringSystems . \ ABSTRACT / The cOmputationAl model of question answering proposed by a.lamputer program,,QUALM, is a theory of conceptual information processing based 'bon models of, human memory organization. It has been developed from the perspective of' natural language processing in conjunction with story understanding systems. The p,ocesses in QUALM are divided into four phases:(1) conceptual categorization; (2) inferential analysis;(3) content specification; and (4) 'retrieval heuristict. QUALM providea concrete criterion for judging the strengths and weaknesses'of store representations.As a theoretical model, QUALM is intended to describ general question answerinlg, where question antiering is viewed as aerbal communicb.tion. device betieen people.(Author/KP) A. 1 *********************************************************************** Reproductions supplied'by EDRS are the best that can be made' * from. the original document. ********f******************************************,******************* 1, This work-was
  • 001-012 Primeras Páginas

    001-012 Primeras Páginas

    PUBLICACIONES DEL INSTITUTO GEOLÓGICO Y MINERO DE ESPAÑA Serie: CUADERNOS DEL MUSEO GEOMINERO. Nº 9 ADVANCES IN TRILOBITE RESEARCH ADVANCES IN TRILOBITE RESEARCH IN ADVANCES ADVANCES IN TRILOBITE RESEARCH IN ADVANCES planeta tierra Editors: I. Rábano, R. Gozalo and Ciencias de la Tierra para la Sociedad D. García-Bellido 9 788478 407590 MINISTERIO MINISTERIO DE CIENCIA DE CIENCIA E INNOVACIÓN E INNOVACIÓN ADVANCES IN TRILOBITE RESEARCH Editors: I. Rábano, R. Gozalo and D. García-Bellido Instituto Geológico y Minero de España Madrid, 2008 Serie: CUADERNOS DEL MUSEO GEOMINERO, Nº 9 INTERNATIONAL TRILOBITE CONFERENCE (4. 2008. Toledo) Advances in trilobite research: Fourth International Trilobite Conference, Toledo, June,16-24, 2008 / I. Rábano, R. Gozalo and D. García-Bellido, eds.- Madrid: Instituto Geológico y Minero de España, 2008. 448 pgs; ils; 24 cm .- (Cuadernos del Museo Geominero; 9) ISBN 978-84-7840-759-0 1. Fauna trilobites. 2. Congreso. I. Instituto Geológico y Minero de España, ed. II. Rábano,I., ed. III Gozalo, R., ed. IV. García-Bellido, D., ed. 562 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system now known or to be invented, without permission in writing from the publisher. References to this volume: It is suggested that either of the following alternatives should be used for future bibliographic references to the whole or part of this volume: Rábano, I., Gozalo, R. and García-Bellido, D. (eds.) 2008. Advances in trilobite research. Cuadernos del Museo Geominero, 9.
  • Lessons from the Fossil Record: the Ediacaran Radiation, the Cambrian Radiation, and the End-Permian Mass Extinction

    Lessons from the Fossil Record: the Ediacaran Radiation, the Cambrian Radiation, and the End-Permian Mass Extinction

    OUP CORRECTED PROOF – FINAL, 06/21/12, SPi CHAPTER 5 Lessons from the fossil record: the Ediacaran radiation, the Cambrian radiation, and the end-Permian mass extinction S tephen Q . D ornbos, M atthew E . C lapham, M argaret L . F raiser, and M arc L afl amme 5.1 Introduction and altering substrate consistency ( Thayer 1979 ; Seilacher and Pfl üger 1994 ). In addition, burrowing Ecologists studying modern communities and eco- organisms play a crucial role in modifying decom- systems are well aware of the relationship between position and enhancing nutrient cycling ( Solan et al. biodiversity and aspects of ecosystem functioning 2008 ). such as productivity (e.g. Tilman 1982 ; Rosenzweig Increased species richness often enhances ecosys- and Abramsky 1993 ; Mittelbach et al. 2001 ; Chase tem functioning, but a simple increase in diversity and Leibold 2002 ; Worm et al. 2002 ), but the pre- may not be the actual underlying driving mecha- dominant directionality of that relationship, nism; instead an increase in functional diversity, the whether biodiversity is a consequence of productiv- number of ecological roles present in a community, ity or vice versa, is a matter of debate ( Aarssen 1997 ; may be the proximal cause of enhanced functioning Tilman et al. 1997 ; Worm and Duffy 2003 ; van ( Tilman et al. 1997 ; Naeem 2002 ; Petchey and Gaston, Ruijven and Berendse 2005 ). Increased species rich- 2002 ). The relationship between species richness ness could result in increased productivity through (diversity) and functional diversity has important 1) interspecies facilitation and complementary implications for ecosystem functioning during resource use, 2) sampling effects such as a greater times of diversity loss, such as mass extinctions, chance of including a highly productive species in a because species with overlapping ecological roles diverse assemblage, or 3) a combination of biologi- can provide functional redundancy to maintain cal and stochastic factors ( Tilman et al.
  • 2Nd International Trilobite Conference (Brock University, St. Catharines, Ontario, August 22-24, 1997) ABSTRACTS

    2Nd International Trilobite Conference (Brock University, St. Catharines, Ontario, August 22-24, 1997) ABSTRACTS

    2nd International Trilobite Conference (Brock University, St. Catharines, Ontario, August 22-24, 1997) ABSTRACTS. Characters and Parsimony. Jonathan M. Adrain, Department of Palaeontology, The Natural History Museum, London SW7 5BD, United King- dom; Gregory D. Edgecombe, Centre for Evolutionary Research, Australian Museum, 6 College Street, Sydney South, New South Wales 2000, Australia Character analysis is the single most important element of any phylogenetic study. Characters are simply criteria for comparing homologous organismic parts between taxa. Homology of organismic parts in any phylogenetic study is an a priori assumption, founded upon topological similarity through some or all stages of ontogeny. Once homolo- gies have been suggested, characters are invented by specifying bases of comparison of organismic parts from taxon to taxon within the study group. Ideally, all variation in a single homology occurring within the study group should be accounted for. Comparisons are between attributes of homologous parts, (e.g., simple presence, size of some- thing, number of something), and these attributes are referred to as character states. Study taxa are assigned member- ship in one (or more, in the case of polymorphisms) character-state for each character in the analysis. A single char- acter now implies discrete groupings of taxa, but this in itself does not constitute a phylogeny. In order to suggest or convey phylogenetic information, the historical status of each character-state, and of the the group of taxa it sug- gests, must be evaluated. That is, in the case of any two states belonging to the same character, we need to discover whether one state is primitive (broadly speaking, ancestral) or derived (representative of an evolutionary innovation) relative to the other.
  • Radiogenic Age and Isotopic Studies: Report 3

    Radiogenic Age and Isotopic Studies: Report 3

    GSCAN-P—89-2 CA9200982 GEOLOGICAL SURVEY OF CANADA PAPER 89-2 RADIOGENIC AGE AND ISOTOPIC STUDIES: REPORT 3 1990 Entity, Mtnat and Cnargi*, Mint* M n**ouroaa Canada ftoaioweat Canada CanadS '•if S ( >* >f->( f STAFF, GEOCHRONOLOGY SECTION: GEOLOGICAL SURVEY OF CANADA Research Scientists: Otto van Breemen J. Chris Roddick Randall R. Parrish James K. Mortensen Post-Doctoral Fellows: Francis 6. Dudas Hrnst Hegncr Visiting Scientist: Mary Lou Bevier Professional Scientists: W. Dale L<neridj:e Robert W. Sullivan Patricia A. Hunt Reginald J. Theriaul! Jack L. Macrae Technical Staff: Klaus Suntowski Jean-Claude Bisson Dianne Bellerive Fred B. Quigg Rejean J.G. Segun Sample crushing and preliminary mineral separation arc done by the Mineralogy Section GEOLOGICAL SURVEY OF CANADA PAPER 89-2 RADIOGENIC AGE AND ISOTOPIC STUDIES: REPORT 3 1990 ° Minister of Supply and Services Canada 1990 Available in Canada through authorized bookstore agents and other bookstores or by mail from Canadian Government Publishing Centre Supply and Services Canada Ottawa, Canada Kl A 0S9 and from Geological Survey of Canada offices: 601 Booth Street Ottawa, Canada Kl A 0E8 3303-33rd Street N.W., Calgary, Alberta T2L2A7 100 West Pender Street Vancouver, B.C. V6B 1R8 A deposit copy of this publication is also available for reference in public libraries across Canada Cat. No. M44-89/2E ISBN 0-660-13699-6 Price subject to change without notice Cover Description: Aerial photograph of the New Quebec Crater, a meteorite impact structure in northern Ungava Peninsula, Quebec, taken in 1985 by P.B. Robertson (GSC 204955 B-l). The diameter of the lake is about 3.4km and the view is towards the east-southeast.
  • Review of the Survey's Activities in 1988

    Review of the Survey's Activities in 1988

    5 Review af the Survey's activities in 1988 Martin Ghisler Director During 1988 GGU started two major field projects in geological series. In addition the programme will in­ Greenland, one in North-East Greenland, and another clude a preliminary evaluation of the mineral potential in West Greenland in the Disko Bugt area. In addition of the area and, combined with existing aeromagnetic petroleum geological investigations in Jameson Land and planned marine-seismic surveys, will contribute to a and glacio-hydrological studies in West Greenland con­ better understanding of the geology and hydrocarbon tinued. A total of 84 participants were engaged in the potential of the off-shore area. field work. In 1988, 23 participants from GGU and 6 from the The scientific and technical staff at GGU in Copen­ Geodetic Institute were supported by helicopter from a hagen continued research on material collected in base camp north of Daneborg, 300 km north of Mesters Greenland; total staff including administrative person­ Vig. The main activities were concentrated on the crys­ nel numbers at present 108. A 10 per cent reduction of talline rocks of the Caledonides between 75° and 76°N the staff is forecast over the next four years, combined and were accompanied by more detailed studies south with an additional reduction of the budget by 14 per of 75°N on the sedimentary features of the late Pre­ cent. Accordingly, decreasing activity in both field work cambrian Eleonore Bay Group, the palaeontology of in Greenland and laboratory work in Copenhagen is Lower Palaeozoic strata, and the sedimentological and expected.
  • Tintina Gold Province Study, Alaska and Yukon Territory, 2002–2007 Understanding the Origin, Emplacement, and Environmental Signature of Mineral Resources

    Tintina Gold Province Study, Alaska and Yukon Territory, 2002–2007 Understanding the Origin, Emplacement, and Environmental Signature of Mineral Resources

    Tintina Gold Province Study, Alaska and Yukon Territory, 2002–2007 Understanding the Origin, Emplacement, and Environmental Signature of Mineral Resources Background Alaska’s mineral resources are as vast as the land itself. The Tintina gold province (TGP) encompasses roughly 150,000 square kilometers and NORTHWEST is bounded on the north by the Kaltag- TERRITORIES Tintina fault and on the south by the A L A S K A CANADA Farewell-Denali fault. This is an expan- Fault Y U K O N Tintina UNITED STATES T E R R I T O R Y sive region with limited road or navi- Kaltag - Yukon - Ryan Lode Fort Knox- Tanana Brewery gable river access. It stretches westward deposit Creek FairbanksTrue North deposits Upland deposit in a broad arc from British Columbia, Pogo Scheelite Dome Mountains G O L D deposit deposit Canada, through southeastern and central s Dawson d T I N T I N A n P R O V I N C E a Mayo to southwestern Alaska, United States. l Denali w Kuskokwim Farewell - o Fault The region’s climate is subarctic and L Donlin Creek r deposit e v includes major physiographic delinea- Ri n tions and ecoregions such as the Yukon- Yuko Anchorage Whitehorse Tanana upland, the Yukon River low- Pebble deposit lands, and the Kuskokwim Mountains BRITISH COLUMBIA (Nowacki and others, 2002). Some of the first placer and lode gold discoveries in northern North Amer- Figure 1. Landsat-based general index map of the Tintina gold province in Alaska and ica were in the TGP in 1886.
  • Selection of Illustrations

    Selection of Illustrations

    Selection of Illustrations From Harrison, John Christopher. (1991) "Melville Island's salt-based fold belt (Arctic Canada)." Doctoral Thesis, Rice University. http://hdl.handle.net/1911/16447. LIST OF ILLUSTRATIONS Figures 2. Colour satellite mosaic of Melville Island . • . • . 4 3. Map of reflection seismic proflles, wells and structural cross-sections, Mel ville Island . 12 7. Correlation of sonic, density, lithology and various synthetic logs of the logs of the Panarctic et al. Sabine Bay A-07 well with a nearby portion of reflection seismic line P1192 . 29,30 10. Topography and bathymetty of Melville Island-area . 44 11. Bouguer gravity anomaly map of the western Arctic Islands-area . 48 12. Magnetic anomaly map of the western Arctic Islands-area . 50 21. Isopach map of the upper unreflective succession (sP3, sPC) ............. 70 22. Suggested correlation of Precambrian units • • • . • • • • • • • • . • . 75 25. Generalized stratigraphic cross-section of the Franldinian Succession, northern Victoria Island to northwestern Melville Island . 81,82 28. Representative stratigraphy: ?Precambrian to Devonian shelf rim stratigraphy and cover, west central Melville Island . 89 29. Representative lithostratigraphy: ?Precambrian to Devonian intra -shelf basin,·embayment and cover, central Melville Island . 91 30. Representative lithostratigraphy: ?Precambrian to Devonian of the Towson Point Carbonate Build-up and cover, northeastern Melville Island . 93 33. Suggested correlation of ?Cambrian and Lower Ordovician seismic units . 107 34. Correlation chart, Lower Ordovician through Upper Silurian strata . • . 113 41. Correlation chart, Devonian strata of Melville Island . 132 59. Bar graphs of sedimentation rate plotted against time (540-355 Ma) . • . • . 188 60. Isopach map of ?Lower Cambrian and ?Middle Cambrian units .