Sedimentology and Tectonic History of the Eureka Sound
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Polar-FIT: Pliocene Landscapes and Arctic Remains—Frozen in Time
Document generated on 09/30/2021 2:17 p.m. Geoscience Canada Journal of the Geological Association of Canada Journal de l’Association Géologique du Canada PoLAR-FIT Pliocene Landscapes and Arctic Remains—Frozen in Time J.C. Gosse, A.P. Ballantyne, J.D. Barker, A.Z. Csank, T.L. Fletcher, G.W. Grant, D.R. Greenwood, R.D.E. MacPhee and N. Rybczynski Volume 44, Number 1, 2017 Article abstract This short summary presents selected results of an ongoing investigation into URI: https://id.erudit.org/iderudit/1039606ar the feedbacks that contribute to amplified Arctic warming. The consequences of warming for Arctic biodiversity and landscape response to global warmth See table of contents are currently being interpreted. Arctic North American records of largescale landscape and paleoenvironmental change during the Pliocene are exquisitely preserved and locked in permafrost, providing an opportunity for Publisher(s) paleoenvironmental and faunal reconstruction with unprecedented quality and resolution. During a period of mean global temperatures only ~2.5°C above The Geological Association of Canada modern, the Pliocene molecular, isotopic, tree-ring, paleofaunal, and paleofloral records indicate that the High Arctic mean annual temperature was ISSN 11–19°C above modern values, pointing to a much shallower latitudinal temperature gradient than exists today. It appears that the intense Neogene 0315-0941 (print) warming caused thawing and weathering to liberate sediment and create a 1911-4850 (digital) continuous and thick (>2.5 km in places) clastic wedge, from at least Banks Island to Meighen Island, to form a coastal plain that provided a highway for Explore this journal camels and other mammals to migrate and evolve in the High Arctic. -
Seismic Reflection Profiles from Kane to Hall Basin, Nares Strait: Evidence for Faulting
Polarforschung 74 (1-3), 21 – 39, 2004 (erschienen 2006) Seismic Reflection Profiles from Kane to Hall Basin, Nares Strait: Evidence for Faulting by H. Ruth Jackson1, Tim Hannon1, Sönke Neben2, Karsten Piepjohn2 and Tom Brent3 Abstract: Three major tectonic boundaries are predicted to be present beneath durch eine folgende kompressive Phase reaktiviert wurde. Als Arbeitshypo- the waters of this segment of Nares Strait: (1) the orogenic front of the Paleo- these fassen wir die oberflächennahen Teile dieses Systems als Stirn der Plat- zoic Ellesmerian Foldbelt between thrust sheets on Ellesmere Island and flat- tengrenze zwischen Nordamerika und Grönland auf. lying foreland rocks on Greenland, (2) the supposed sinistral strike-slip plate boundary of Paleocene age between the Ellemere Island section of the North America plate and the Greenland plate, and (3) the orogenic front of the Eocene to Oligocene Eurekan Foldbelt that must lie between thrust tectonics INTRODUCTION on Ellesmere Island and undeformed rocks of Greenland. To understand this complicated situation and to look for direct evidence of the plate boundary, The Late Cretaceous and Tertiary deformation on Ellesmere new seismic reflection profiles were collected and, together with industry data in the south, interpreted. The profiles are clustered in three areas controlled by Island (Fig. 1) called the Eurekan Orogeny has been attributed the distribution of the sea ice. Bathymetry is used to extrapolate seismic to the counter clockwise rotation of Greenland (e.g., OKULITCH features with a topographic expression between the regions. Based on high- & TRETTIN 1991). However reconciling the geology on oppo- resolution boomer and deeper penetration airgun profiles five seismic units are mapped. -
(Late Tertiary) As Seen from Prince Patrick Island, Arctic Canada’ JOHN G
ARCTIC WL. 43, NO. 4 (DECEMBER 1990) P. 393-403 Beaufort Formation (Late Tertiary) as Seen from Prince Patrick Island, Arctic Canada’ JOHN G. FYLES’ (Received 20 March 1990; accepted in revked form 14 June 1990) ABSTRACT. The Beaufort Formation, in its typearea on Prince Patrick Island, is a single lithostratigraphicunit, a few tens of metres thick, consisting of unlithified sandy deposits of braided rivers. Organicbeds in the sand have yielded more than 200 species of plants and insects and probably originated during the Pliocene, when the area supported coniferous forest. ThisBeaufort unit forms the thin eastern edge of a northwest-thickeningwedge of sand and gravel beneath the western part of the island. These largely unexposed beds,up to several hundred metres thick, include the Beaufort unit and perhaps other older or younger deposits.On the islands northeast and southwest of PrincePatrick Island (MeighenIsland to Banks Island),the name BeaufortFormation has been appliedto similar deposits of late Rrtiary age. Most recorded Beaufort beds on these islands are stratigraphically and paleontologically equivalentto the “type” Beaufort, but a few sites that have been called Beaufort (suchas Duck Hawk Bluffsand the lower unit at Ballast Brook,on Banks Island) differ stratigraphicallyand paleontologically from the “type” Beaufort. This paper recommends that these deposits (probably middle Miocene) and others like them be assigned new stratigraphic names and not be included in the Beaufort Formation as now defined. Informal names Mary Sachs gravel (Duck HawkBluffs) and Ballast Brookbeds are proposed as an initial step. Formal use of the name Beaufort Formation shouldrestricted be to the western Arctic Islands. -
A Historical and Legal Study of Sovereignty in the Canadian North : Terrestrial Sovereignty, 1870–1939
University of Calgary PRISM: University of Calgary's Digital Repository University of Calgary Press University of Calgary Press Open Access Books 2014 A historical and legal study of sovereignty in the Canadian north : terrestrial sovereignty, 1870–1939 Smith, Gordon W. University of Calgary Press "A historical and legal study of sovereignty in the Canadian north : terrestrial sovereignty, 1870–1939", Gordon W. Smith; edited by P. Whitney Lackenbauer. University of Calgary Press, Calgary, Alberta, 2014 http://hdl.handle.net/1880/50251 book http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution Non-Commercial No Derivatives 4.0 International Downloaded from PRISM: https://prism.ucalgary.ca A HISTORICAL AND LEGAL STUDY OF SOVEREIGNTY IN THE CANADIAN NORTH: TERRESTRIAL SOVEREIGNTY, 1870–1939 By Gordon W. Smith, Edited by P. Whitney Lackenbauer ISBN 978-1-55238-774-0 THIS BOOK IS AN OPEN ACCESS E-BOOK. It is an electronic version of a book that can be purchased in physical form through any bookseller or on-line retailer, or from our distributors. Please support this open access publication by requesting that your university purchase a print copy of this book, or by purchasing a copy yourself. If you have any questions, please contact us at ucpress@ ucalgary.ca Cover Art: The artwork on the cover of this book is not open access and falls under traditional copyright provisions; it cannot be reproduced in any way without written permission of the artists and their agents. The cover can be displayed as a complete cover image for the purposes of publicizing this work, but the artwork cannot be extracted from the context of the cover of this specificwork without breaching the artist’s copyright. -
Cultural Heritage Series
VOLUME 4 PART 2 MEMOIRS OF THE QUEENSLAND MUSEUM CULTURAL HERITAGE SERIES 17 OCTOBER 2008 © The State of Queensland (Queensland Museum) 2008 PO Box 3300, South Brisbane 4101, Australia Phone 06 7 3840 7555 Fax 06 7 3846 1226 Email [email protected] Website www.qm.qld.gov.au National Library of Australia card number ISSN 1440-4788 NOTE Papers published in this volume and in all previous volumes of the Memoirs of the Queensland Museum may be reproduced for scientific research, individual study or other educational purposes. Properly acknowledged quotations may be made but queries regarding the republication of any papers should be addressed to the Editor in Chief. Copies of the journal can be purchased from the Queensland Museum Shop. A Guide to Authors is displayed at the Queensland Museum web site A Queensland Government Project Typeset at the Queensland Museum CHAPTER 4 HISTORICAL MUA ANNA SHNUKAL Shnukal, A. 2008 10 17: Historical Mua. Memoirs of the Queensland Museum, Cultural Heritage Series 4(2): 61-205. Brisbane. ISSN 1440-4788. As a consequence of their different origins, populations, legal status, administrations and rates of growth, the post-contact western and eastern Muan communities followed different historical trajectories. This chapter traces the history of Mua, linking events with the family connections which always existed but were down-played until the second half of the 20th century. There are four sections, each relating to a different period of Mua’s history. Each is historically contextualised and contains discussions on economy, administration, infrastructure, health, religion, education and population. Totalai, Dabu, Poid, Kubin, St Paul’s community, Port Lihou, church missions, Pacific Islanders, education, health, Torres Strait history, Mua (Banks Island). -
Re-Evaluation of Strike-Slip Displacements Along and Bordering Nares Strait
Polarforschung 74 (1-3), 129 – 160, 2004 (erschienen 2006) In Search of the Wegener Fault: Re-Evaluation of Strike-Slip Displacements Along and Bordering Nares Strait by J. Christopher Harrison1 Abstract: A total of 28 geological-geophysical markers are identified that lich der Bache Peninsula und Linksseitenverschiebungen am Judge-Daly- relate to the question of strike slip motions along and bordering Nares Strait. Störungssystem (70 km) und schließlich die S-, später SW-gerichtete Eight of the twelve markers, located within the Phanerozoic orogen of Kompression des Sverdrup-Beckens (100 + 35 km). Die spätere Deformation Kennedy Channel – Robeson Channel region, permit between 65 and 75 km wird auf die Rotation (entgegen dem Uhrzeigersinn) und ausweichende West- of sinistral offset on the Judge Daly Fault System (JDFS). In contrast, eight of drift eines semi-rigiden nördlichen Ellesmere-Blocks während der Kollision nine markers located in Kane Basin, Smith Sound and northern Baffin Bay mit der Grönlandplatte zurückgeführt. indicate no lateral displacement at all. Especially convincing is evidence, presented by DAMASKE & OAKEY (2006), that at least one basic dyke of Neoproterozoic age extends across Smith Sound from Inglefield Land to inshore eastern Ellesmere Island without any recognizable strike slip offset. INTRODUCTION These results confirm that no major sinistral fault exists in southern Nares Strait. It is apparent to both earth scientists and the general public To account for the absence of a Wegener Fault in most parts of Nares Strait, that the shape of both coastlines and continental margins of the present paper would locate the late Paleocene-Eocene Greenland plate boundary on an interconnected system of faults that are 1) traced through western Greenland and eastern Arctic Canada provide for a Jones Sound in the south, 2) lie between the Eurekan Orogen and the Precam- satisfactory restoration of the opposing lands. -
The Franklinian Geosyncline in the Canadian Arctic and Its Relationship to Svalbard
The Franklinian Geosyncline in the Canadian Arctic and its relationship to Svalbard By R. L. CHRISTIE1 Contents P age Abstract 263 lntroduction . 264 The Franklinian Geosyncline . 265 General tectonic pattern . 265 Stratigraphy . 267 Tectonic events .................. .............................. 274 a) Late Precambrian orogeny ... ........... .... ...... ........ 274 b) Middle Ordovician or earlier orogeny ...................... .. 274 c) Late Silurian to Early Devonian orogeny ....... ... .............. 274 d) Midd le Devonian?, Acadian orogeny . 275 e) Latest Devonian to Ear!y Mississippian orogeny ................ 276 Structural features of the Innuitian orogen .......................... 276 The principal structures : Acadian - Ellesmerian ... ................. 277 Older structural zones . 278 Y o unger structures . 279 A review of some tectonic features of the Innuitian region . 280 Tectonic development of Svalbard and the Innuitian region ............ 284 Tectonic models to account for the Arctic Ocean basins and the geology of Svalbard . 284 The geology of Svalbard and the lnnuitian region . 287 Pre-Carboniferous time . 287 Carboniferous and later time . 295 Tectonic connections between Svalbard and Innuitia ...... .......... 295 A tectonic model for Svalbard and Innuitia .................... .... 297 The de Geer Line and other lineaments. 300 The geosynclinal concept and the model for Svalbard-Innuitia ........ 304 Conclusions . 309 References . 309 Abstract Development of the Franklinian Geosyncline began, perhaps ear!ier, but -
ARCTIC RIFT COPPER Part of World’S Newest Metallogenic Province: Kiffaanngissuseq
See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/346029727 ARCTIC RIFT COPPER Part of world’s newest metallogenic province: Kiffaanngissuseq Technical Report · November 2020 DOI: 10.13140/RG.2.2.18610.84161 CITATIONS 0 2 authors, including: Jonathan Bell Curtin University 17 PUBLICATIONS 13 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: Greenland View project Mineral asset valuation and pricing View project All content following this page was uploaded by Jonathan Bell on 20 November 2020. The user has requested enhancement of the downloaded file. ARCTIC RIFT COPPER Part of world’s newest metallogenic province: Kiffaanngissuseq Technical Assessment Report Greenfields Exploration Ltd November 2020 This report presents a holistic view of north eastern Greenland’s geology. The empirical evidence of mineralisation and geological record are tied in with mineral system components from global through to prospect scales. The source rocks, geodynamic triggers, pathways, and deposition sites are all identified within a preserved terrane. This work defines the Kiffaanngissuseq metallogenic province, a previously undescribed mineral system. For the first time, we identify a c. 1,250 Ma orogenic event in the basement as the geodynamic trigger related to the basalt- hosted native copper within the Arctic Rift Copper project. A c. 385 Ma fluid migration is identified as the trigger for a second copper-sulphide mineralising event expressed within the project, that also emplaced a distal zinc deposit within Kiffaanngissuseq. This multi-episodal mineral system is supported by a regional geochemical and hydrodynamic framework that is not articulated elsewhere. -
Stratigraphic and Paleoenvironmental Reconstruction of a Mid-Pliocene Fossil Site in the High Arctic (Ellesmere Island, Nunavut)
ARCTIC VOL. 69, NO. 2 (JUNE 2016) P. 185 – 204 http://dx.doi.org/10.14430/arctic4567 Stratigraphic and Paleoenvironmental Reconstruction of a Mid-Pliocene Fossil Site in the High Arctic (Ellesmere Island, Nunavut): Evidence of an Ancient Peatland with Beaver Activity William Travis Mitchell,1 Natalia Rybczynski,2,3 Claudia Schröder-Adams,1 Paul B. Hamilton,4 Robin Smith2 and Marianne Douglas5 (Received 12 June 2015; accepted in revised form 27 January 2016) ABSTRACT. Neogene terrestrial deposits of sand and gravel with preserved wood and peat accumulations occur in many areas of the High Arctic. The Pliocene-aged Beaver Pond fossil site (Ellesmere Island, NU) is one such site that differs from other sites in the great thickness of its peat layer and the presence of a rich vertebrate faunal assemblage, along with numerous beaver-cut sticks. Although the site has been the subject of intense paleontological investigations for over two decades, there has not been a reconstruction of its depositional history. In this study, measured sections within and surrounding the site established the stratigraphy and lateral continuity of the stratigraphic units. Grain size analysis, loss on ignition, and fossil diatom assemblages were examined to reconstruct paleoenvironmental changes in the sequence. The base of the section was interpreted as a floodplain system. Using modern peat accumulation rates, the maximum thickness (240 cm) of the overlying peat layer is estimated to represent 49 000 ± 12 000 years. From this evidence, we suggest that during the peat formation interval, beaver activity may have played a role in creating an open water environment. -
Polar Continental Shelf Program Science Report 2019: Logistical Support for Leading-Edge Scientific Research in Canada and Its Arctic
Polar Continental Shelf Program SCIENCE REPORT 2019 LOGISTICAL SUPPORT FOR LEADING-EDGE SCIENTIFIC RESEARCH IN CANADA AND ITS ARCTIC Polar Continental Shelf Program SCIENCE REPORT 2019 Logistical support for leading-edge scientific research in Canada and its Arctic Polar Continental Shelf Program Science Report 2019: Logistical support for leading-edge scientific research in Canada and its Arctic Contact information Polar Continental Shelf Program Natural Resources Canada 2464 Sheffield Road Ottawa ON K1B 4E5 Canada Tel.: 613-998-8145 Email: [email protected] Website: pcsp.nrcan.gc.ca Cover photographs: (Top) Ready to start fieldwork on Ward Hunt Island in Quttinirpaaq National Park, Nunavut (Bottom) Heading back to camp after a day of sampling in the Qarlikturvik Valley on Bylot Island, Nunavut Photograph contributors (alphabetically) Dan Anthon, Royal Roads University: page 8 (bottom) Lisa Hodgetts, University of Western Ontario: pages 34 (bottom) and 62 Justine E. Benjamin: pages 28 and 29 Scott Lamoureux, Queen’s University: page 17 Joël Bêty, Université du Québec à Rimouski: page 18 (top and bottom) Janice Lang, DRDC/DND: pages 40 and 41 (top and bottom) Maya Bhatia, University of Alberta: pages 14, 49 and 60 Jason Lau, University of Western Ontario: page 34 (top) Canadian Forces Combat Camera, Department of National Defence: page 13 Cyrielle Laurent, Yukon Research Centre: page 48 Hsin Cynthia Chiang, McGill University: pages 2, 8 (background), 9 (top Tanya Lemieux, Natural Resources Canada: page 9 (bottom -
Science Report
P ROGRAMME DU P LATEAU LATEAU C ONTINENTAL ONTINENTAL P OLAR C ONTINENTAL S HELF P ROGRAM SCI E NCE P OLAIRE REPORT Logistical support for leading-edge Rapport Scientifique scientific research in the Canadian Arctic 2008 2009 2008-2009 2009 2008 2008-2009 dans l’Arctique canadien l’Arctique dans pointe de scientifique Soutien logistique à la recherche recherche la à logistique Soutien CIENTIFIQUE S Science Report T T R RAPPO ROGRAM P OLAIRE P ONTINENTAL C LATEAU P DU ROGRAMME P HELF S ONTINENTAL ONTINENTAL C OLAR P Polar Continental Shelf Program Science Report 2008/09: Logistical support for leading-edge scientific research in the Canadian Arctic Contact information Polar Continental Shelf Program Natural Resources Canada 615 Booth Street, Room 487 Ottawa ON K1A 0E9 Canada Tel.: 613-947-1650 E-mail: [email protected] Web site: pcsp.nrcan.gc.ca Cover photograph information A helicopter sits at a study site in the mountains of northern Ellesmere Island, Nunavut. (Credit: W. von Gosen) Cat. No. M78-1/1-2009 (Print) ISBN 978-1-100-51198-6 Cat. No. M78-1/1-2009E-PDF (On-line) ISBN 978-1-100-15115-1 © Her Majesty the Queen in Right of Canada, 2010 Recycled paper Table of contents 2 Minister’s message 4 The Polar Continental Shelf Program 5 Spotlight on a PCSP employee: George Benoit 6 The PCSP Resolute facility expansion: Improving support for Arctic science 6 PCSP Open House 2009 7 PCSP’s work with research organizations in Canada’s North 7 International Polar Year 8 The scientific legacy of Roy Koerner 9 PCSP-supported projects in the news 12 PCSP-supported field camps in the Canadian Arctic (2008) – map 14 PCSP-supported projects in 2008 13 Ecological integrity 20 Sustainable communities and culture 23 Climate change 30 Northern resources and development 33 Planetary science 36 National parks and weather stations A Twin Otter beside a field camp at Alexandra Fiord,Ellesmere Island, Nunavut J. -
Using Tooth Enamel Microstructure to Identify Mammalian Fossils at an Eocene Arctic Forest
PLOS ONE RESEARCH ARTICLE Using tooth enamel microstructure to identify mammalian fossils at an Eocene Arctic forest 1☯ 2☯ 3☯ Jaelyn J. EberleID *, Wighart von Koenigswald , David A. Eberth 1 University of Colorado Museum of Natural History and Department of Geological Sciences, University of Colorado, Boulder, Colorado, United States of America, 2 Institute of Geosciences (Section Palaeontology) at the Rheinische Friedrich-Wilhelms University, Bonn, Germany, 3 Royal Tyrrell Museum, Drumheller, Alberta, Canada a1111111111 ☯ These authors contributed equally to this work. [email protected] a1111111111 * a1111111111 a1111111111 a1111111111 Abstract Lower Eocene (Wasatchian-aged) sediments of the Margaret Formation on Ellesmere Island in Canada's High Arctic preserve evidence of a rainforest inhabited by alligators, tur- tles, and a diverse mammalian fauna. The mammalian fossils are fragmentary and often OPEN ACCESS poorly preserved. Here, we offer an alternative method for their identification. Among the Citation: Eberle JJ, von Koenigswald W, Eberth DA best preserved and extensive of the Eocene Arctic forests is the Strathcona Fiord Fossil For- (2020) Using tooth enamel microstructure to est, which contains permineralized in situ tree stumps protruding from a prominent coal identify mammalian fossils at an Eocene Arctic forest. PLoS ONE 15(9): e0239073. https://doi.org/ seam, but a paucity of vertebrate fossils. In 2010 and 2018, we recovered mammalian tooth 10.1371/journal.pone.0239073 fragments at the fossil forest, but they are so incomplete as to be undiagnostic by using their Editor: Adam Csank, University of Nevada, Reno, external morphology. We used a combination of light microscopy and SEM analysis to study UNITED STATES the enamel microstructure of two tooth fragments from the fossil forestÐNUFV2092B and Received: April 14, 2020 2092E.