Antarctic Journal
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
Detrital Zircon Geochronology of Palaeozoic Siliciclastic Rocks from the Ellsworth Mountains, West Antarctica
O EOL GIC G A D D A E D C E I H C I L E O S F u n 2 d 6 la serena octubre 2015 ada en 19 Detrital zircon geochronology of Palaeozoic siliciclastic rocks from the Ellsworth Mountains, West Antarctica Paula Castillo* and C. Mark Fanning Research School of Earth Sciences, The Australian National University, Canberra, Australia. Rodrigo Fernández University of Texas Institute for Geophysics, The University of Texas at Austin, Austin, Texas, USA. Fernando Poblete Geosciences Rennes, Université de Rennes 1, Rennes, France. Departamento de Geología, Universidad de Chile, Santiago, Chile. *Contact email: [email protected] Abstract. In the Ellsworth Mountains there is an extensive record of sedimentation from early Cambrian to Permian times. However, the tectonic history and the palaeogeographic significance remain enigmatic. Nine sandstone samples were analysed for their U-Pb detrital zircon age spectra using SHRIMPII and RG. They belong to the early Cambrian to Carboniferous-Permian sequences and record typical Gondwana margin signatures. Variations up section/sequence in zircon provenance suggest restricted basinal deposition during the Cambrian,! with likely sources in the Namaqua-Natal and Mozambique/Maud Belts. There are little or no contributions from older cratons and so the Ellsworth basin evolved as a separate basin to that in the Transantarctic Mountains.! This basin configuration changed after the Devonian and deposition continued Figure 1. Reconstruction of part of Gondwana at ca. 500 Ma. during the late Palaeozoic, when the Ellsworth Mountains South America: SFC - Sao Francisco craton; PPC - basin only received detritus from the Ross/Pan-African Paranapanema craton; RPC - Río de la Plata craton. -
University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY of the SCOTT GLACIER and WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA
This dissertation has been /»OOAOO m icrofilm ed exactly as received MINSHEW, Jr., Velon Haywood, 1939- GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA. The Ohio State University, Ph.D., 1967 Geology University Microfilms, Inc., Ann Arbor, Michigan GEOLOGY OF THE SCOTT GLACIER AND WISCONSIN RANGE AREAS, CENTRAL TRANSANTARCTIC MOUNTAINS, ANTARCTICA DISSERTATION Presented in Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of The Ohio State University by Velon Haywood Minshew, Jr. B.S., M.S, The Ohio State University 1967 Approved by -Adviser Department of Geology ACKNOWLEDGMENTS This report covers two field seasons in the central Trans- antarctic Mountains, During this time, the Mt, Weaver field party consisted of: George Doumani, leader and paleontologist; Larry Lackey, field assistant; Courtney Skinner, field assistant. The Wisconsin Range party was composed of: Gunter Faure, leader and geochronologist; John Mercer, glacial geologist; John Murtaugh, igneous petrclogist; James Teller, field assistant; Courtney Skinner, field assistant; Harry Gair, visiting strati- grapher. The author served as a stratigrapher with both expedi tions . Various members of the staff of the Department of Geology, The Ohio State University, as well as some specialists from the outside were consulted in the laboratory studies for the pre paration of this report. Dr. George E. Moore supervised the petrographic work and critically reviewed the manuscript. Dr. J. M. Schopf examined the coal and plant fossils, and provided information concerning their age and environmental significance. Drs. Richard P. Goldthwait and Colin B. B. Bull spent time with the author discussing the late Paleozoic glacial deposits, and reviewed portions of the manuscript. -
Review of the Geology and Paleontology of the Ellsworth Mountains, Antarctica
U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 107; doi:10.3133/of2007-1047.srp107 Review of the geology and paleontology of the Ellsworth Mountains, Antarctica G.F. Webers¹ and J.F. Splettstoesser² ¹Department of Geology, Macalester College, St. Paul, MN 55108, USA ([email protected]) ²P.O. Box 515, Waconia, MN 55387, USA ([email protected]) Abstract The geology of the Ellsworth Mountains has become known in detail only within the past 40-45 years, and the wealth of paleontologic information within the past 25 years. The mountains are an anomaly, structurally speaking, occurring at right angles to the Transantarctic Mountains, implying a crustal plate rotation to reach the present location. Paleontologic affinities with other parts of Gondwanaland are evident, with nearly 150 fossil species ranging in age from Early Cambrian to Permian, with the majority from the Heritage Range. Trilobites and mollusks comprise most of the fauna discovered and identified, including many new genera and species. A Glossopteris flora of Permian age provides a comparison with other Gondwana floras of similar age. The quartzitic rocks that form much of the Sentinel Range have been sculpted by glacial erosion into spectacular alpine topography, resulting in eight of the highest peaks in Antarctica. Citation: Webers, G.F., and J.F. Splettstoesser (2007), Review of the geology and paleontology of the Ellsworth Mountains, Antarctica, in Antarctica: A Keystone in a Changing World – Online Proceedings of the 10th ISAES, edited by A.K. Cooper and C.R. Raymond et al., USGS Open- File Report 2007-1047, Short Research Paper 107, 5 p.; doi:10.3133/of2007-1047.srp107 Introduction The Ellsworth Mountains are located in West Antarctica (Figure 1) with dimensions of approximately 350 km long and 80 km wide. -
Biennial Review 1969/70 Bedford Institute Dartmouth, Nova Scotia Ocean Science Reviews 1969/70 A
(This page Blank in the original) ii Bedford Institute. ii Biennial Review 1969/70 Bedford Institute Dartmouth, Nova Scotia Ocean Science Reviews 1969/70 A Atlantic Oceanographic Laboratory Marine Sciences Branch Department of Energy, Mines and Resources’ B Marine Ecology Laboratory Fisheries Research Board of Canada C *As of June 11, 1971, Department of Environment (see forward), iii (This page Blank in the original) iv Foreword This Biennial Review continues our established practice of issuing a single document to report upon the work of the Bedford Institute as a whole. A new feature introduced in this edition is a section containing four essays: The HUDSON 70 Expedition by C.R. Mann Earth Sciences Studies in Arctic Marine Waters, 1970 by B.R. Pelletier Analysis of Marine Ecosystems by K.H. Mann Operation Oil by C.S. Mason and Wm. L. Ford They serve as an overview of the focal interests of the past two years in contrast to the body of the Review, which is basically a series of individual progress reports. The search for petroleum on the continental shelves of Eastern Canada and Arctic intensified considerably with several drilling rigs and many geophysical exploration teams in the field. To provide a regional depository for the mandatory core samples required from all drilling, the first stage of a core storage and archival laboratory was completed in 1970. This new addition to the Institute is operated by the Resource Administration Division of the Department of Energy, Mines & Resources. In a related move the Geological Survey of Canada undertook to establish at the Institute a new team whose primary function will be the stratigraphic mapping of the continental shelf. -
Antarctic Primer
Antarctic Primer By Nigel Sitwell, Tom Ritchie & Gary Miller By Nigel Sitwell, Tom Ritchie & Gary Miller Designed by: Olivia Young, Aurora Expeditions October 2018 Cover image © I.Tortosa Morgan Suite 12, Level 2 35 Buckingham Street Surry Hills, Sydney NSW 2010, Australia To anyone who goes to the Antarctic, there is a tremendous appeal, an unparalleled combination of grandeur, beauty, vastness, loneliness, and malevolence —all of which sound terribly melodramatic — but which truly convey the actual feeling of Antarctica. Where else in the world are all of these descriptions really true? —Captain T.L.M. Sunter, ‘The Antarctic Century Newsletter ANTARCTIC PRIMER 2018 | 3 CONTENTS I. CONSERVING ANTARCTICA Guidance for Visitors to the Antarctic Antarctica’s Historic Heritage South Georgia Biosecurity II. THE PHYSICAL ENVIRONMENT Antarctica The Southern Ocean The Continent Climate Atmospheric Phenomena The Ozone Hole Climate Change Sea Ice The Antarctic Ice Cap Icebergs A Short Glossary of Ice Terms III. THE BIOLOGICAL ENVIRONMENT Life in Antarctica Adapting to the Cold The Kingdom of Krill IV. THE WILDLIFE Antarctic Squids Antarctic Fishes Antarctic Birds Antarctic Seals Antarctic Whales 4 AURORA EXPEDITIONS | Pioneering expedition travel to the heart of nature. CONTENTS V. EXPLORERS AND SCIENTISTS The Exploration of Antarctica The Antarctic Treaty VI. PLACES YOU MAY VISIT South Shetland Islands Antarctic Peninsula Weddell Sea South Orkney Islands South Georgia The Falkland Islands South Sandwich Islands The Historic Ross Sea Sector Commonwealth Bay VII. FURTHER READING VIII. WILDLIFE CHECKLISTS ANTARCTIC PRIMER 2018 | 5 Adélie penguins in the Antarctic Peninsula I. CONSERVING ANTARCTICA Antarctica is the largest wilderness area on earth, a place that must be preserved in its present, virtually pristine state. -
The Antarctic Contribution to Holocene Global Sea Level Rise
The Antarctic contribution to Holocene global sea level rise Olafur Ing6lfsson & Christian Hjort The Holocene glacial and climatic development in Antarctica differed considerably from that in the Northern Hemisphere. Initial deglaciation of inner shelf and adjacent land areas in Antarctica dates back to between 10-8 Kya, when most Northern Hemisphere ice sheets had already disappeared or diminished considerably. The continued deglaciation of currently ice-free land in Antarctica occurred gradually between ca. 8-5 Kya. A large southern portion of the marine-based Ross Ice Sheet disintegrated during this late deglaciation phase. Some currently ice-free areas were deglaciated as late as 3 Kya. Between 8-5 Kya, global glacio-eustatically driven sea level rose by 10-17 m, with 4-8 m of this increase occurring after 7 Kya. Since the Northern Hemisphere ice sheets had practically disappeared by 8-7 Kya, we suggest that Antarctic deglaciation caused a considerable part of the global sea level rise between 8-7 Kya, and most of it between 7-5 Kya. The global mid-Holocene sea level high stand, broadly dated to between 84Kya, and the Littorina-Tapes transgressions in Scandinavia and simultaneous transgressions recorded from sites e.g. in Svalbard and Greenland, dated to 7-5 Kya, probably reflect input of meltwater from the Antarctic deglaciation. 0. Ingcilfsson, Gotlienburg Universiw, Earth Sciences Centre. Box 460, SE-405 30 Goteborg, Sweden; C. Hjort, Dept. of Quaternary Geology, Lund University, Sdvegatan 13, SE-223 62 Lund, Sweden. Introduction dated to 20-17 Kya (thousands of years before present) in the western Ross Sea area (Stuiver et al. -
Late Quaternary History of Reedy Glacier Brenda Hall Principal Investigator; University of Maine, Orono, [email protected]
The University of Maine DigitalCommons@UMaine University of Maine Office of Research and Special Collections Sponsored Programs: Grant Reports 5-30-2007 Collaborative Research: Late Quaternary History of Reedy Glacier Brenda Hall Principal Investigator; University of Maine, Orono, [email protected] Follow this and additional works at: https://digitalcommons.library.umaine.edu/orsp_reports Part of the Climate Commons, and the Glaciology Commons Recommended Citation Hall, Brenda, "Collaborative Research: Late Quaternary History of Reedy Glacier" (2007). University of Maine Office of Research and Sponsored Programs: Grant Reports. 154. https://digitalcommons.library.umaine.edu/orsp_reports/154 This Open-Access Report is brought to you for free and open access by DigitalCommons@UMaine. It has been accepted for inclusion in University of Maine Office of Research and Sponsored Programs: Grant Reports by an authorized administrator of DigitalCommons@UMaine. For more information, please contact [email protected]. Final Report: 0229034 Final Report for Period: 06/2006 - 05/2007 Submitted on: 05/30/2007 Principal Investigator: Hall, Brenda L. Award ID: 0229034 Organization: University of Maine Title: Collaborative Research: Late Quaternary History of Reedy Glacier Project Participants Senior Personnel Name: Hall, Brenda Worked for more than 160 Hours: Yes Contribution to Project: Brenda Hall has led the mapping effort at Reedy Glacier. She is supervising a graduate student who is working on this project. In addition, she has undertaken all of the radiocarbon work. Post-doc Graduate Student Name: Bromley, Gordon Worked for more than 160 Hours: Yes Contribution to Project: Gordon Bromley is the principal graduate student on the University of Maine portion of this collaborative project. -
The American Antarctic Mountaineering Expedition Are Vinson Massif (1), Mount Shinn (2), Mount Tyree (3), and Mount Gardner (4)
.' S S \ Ilk 'fr 5 5 1• -Wqx•x"]1Z1"Uavy"fx{"]1Z1"Nnxuxprlau"Zu{vny. Oblique aerial photographic view of part of the Sentinel Range. Four of the mountains climbed by the American Antarctic Mountaineering Expedition are Vinson Massif (1), Mount Shinn (2), Mount Tyree (3), and Mount Gardner (4). Mount Os- tenso and Long Gables, also climbed, are among the peaks farther north. tica. Although tentative plans were made to answer The American Antarctic the challenge, it was not until 1966 that those plans began to materialize. In November of that Mountaineering Expedition year, the National Geographic Society agreed to provide major financial support for the undertaking, and the Office of Antarctic Programs of the Na- SAMUEL C. SILVERSTEIN* tional Science Foundation, in view of the proven Rockefeller University capability, national representation, and scientific New York, N.Y. aims of the group, arranged with the Department of Defense for the U.S. Naval Support Force, A Navy LC-130 Hercules circled over the lower Antarctica, to provide the logistics required. On slopes of the Sentinel Range, then descended, touched December 3, the climbing party, called the Ameri- its skis to the snow, and glided to a stop near 10 can Antarctic Mountaineering Expedition, assem- waiting mountaineers and their equipment. Twenty- bled in Los Angeles to prepare for the unprece- five miles to the east, the 16,860-foot-high summit dented undertaking. of Vinson Massif, highest mountain in Antarctica, glistened above a wreath of gray cloud. Nearby The Members were Mount Tyree, 16,250 feet, second highest The expedition consisted of 10 members selected mountain on the Continent; Mount Shinn, about 16,- by the American Alpine Club. -
99-00 May No. 4
THE ANTARCTICAN SOCIETY 7338 Wayfarer Drive Fairfax Station, Virginia 22039 HONORARY PRESIDENT — MRS. PAUL A. SIPLE Vol. 99-00 May No. 4 Presidents: Dr. Carl R. Eklund, 1959-61 Dr. Paul A. Siple, 1961-62 Mr. Gordon D. Cartwright, 1962-63 BRASH ICE RADM David M. Tyree (Ret.), 1963-64 Mr. George R. Toney, 1964-65 Mr. Morton J. Rubin, 1965-66 Dr. Albert R Crary, 1966-68 As you can readily see, this newsletter is NOT announcing a speaker Dr. Henry M. Dater, 1968-70 program, as we have not lined anyone up, nor have any of you stepped Mr. George A. Doumani, 1970-71 Dr. William J. L. Sladen, 1971-73 forward announcing your availability. So we are just moving out with a Mr. Peter F. Bermel, 1973-75 Dr. Kenneth J. Bertrand, 1975-77 newsletter based on some facts, some fiction, some fabrications. It will be Mrs. Paul A. Siple, 1977-78 Dr. Paul C. Dalrymple, 1978-80 up to you to ascertain which ones are which. Good luck! Dr. Meredith F. Burrill, 1980-82 Dr. Mort D. Turner, 1982-84 Dr. Edward P. Todd, 1984-86 Two more Byrd men have been struck down -- Al Lindsey, the last of the Mr. Robert H. T. Dodson, 1986-88 Dr. Robert H. Rutford, 1988-90 Byrd scientists to die, and Steve Corey, Supply Officer, both of the 1933-35 Mr. Guy G. Guthridge, 1990-92 Byrd Antarctic Expedition. Al was a handsome man, and he and his wife, Dr. Polly A. Penhale, 1992-94 Mr. Tony K. Meunier, 1994-96 Elizabeth, were a stunning couple. -
Antarctica: Music, Sounds and Cultural Connections
Antarctica Music, sounds and cultural connections Antarctica Music, sounds and cultural connections Edited by Bernadette Hince, Rupert Summerson and Arnan Wiesel Published by ANU Press The Australian National University Acton ACT 2601, Australia Email: [email protected] This title is also available online at http://press.anu.edu.au National Library of Australia Cataloguing-in-Publication entry Title: Antarctica - music, sounds and cultural connections / edited by Bernadette Hince, Rupert Summerson, Arnan Wiesel. ISBN: 9781925022285 (paperback) 9781925022292 (ebook) Subjects: Australasian Antarctic Expedition (1911-1914)--Centennial celebrations, etc. Music festivals--Australian Capital Territory--Canberra. Antarctica--Discovery and exploration--Australian--Congresses. Antarctica--Songs and music--Congresses. Other Creators/Contributors: Hince, B. (Bernadette), editor. Summerson, Rupert, editor. Wiesel, Arnan, editor. Australian National University School of Music. Antarctica - music, sounds and cultural connections (2011 : Australian National University). Dewey Number: 780.789471 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying or otherwise, without the prior permission of the publisher. Cover design and layout by ANU Press Cover photo: Moonrise over Fram Bank, Antarctica. Photographer: Steve Nicol © Printed by Griffin Press This edition © 2015 ANU Press Contents Preface: Music and Antarctica . ix Arnan Wiesel Introduction: Listening to Antarctica . 1 Tom Griffiths Mawson’s musings and Morse code: Antarctic silence at the end of the ‘Heroic Era’, and how it was lost . 15 Mark Pharaoh Thulia: a Tale of the Antarctic (1843): The earliest Antarctic poem and its musical setting . 23 Elizabeth Truswell Nankyoku no kyoku: The cultural life of the Shirase Antarctic Expedition 1910–12 . -
Rb-Sr Provenance Dates of Feldspar in Glacial Deposits of the Wisconsin Range, Transantarctic Mountains
Rb-Sr provenance dates of feldspar in glacial deposits of the Wisconsin Range, Transantarctic Mountains q F/XUR.E ' I Department of Geology and Mineralogy and Institute of Polar Studies, The Ohio State University, Columbus, J H MERCER ' °hi°43210 ABSTRACT than those of feldspar in the plateau till and range only from 0.46 to 0.66. Nevertheless, three feldspar fractions form a straight line on Glacial deposits in the Wisconsin Range (lat. 85° to 86°30'S, the Rb-Sr isochron diagram, the slope of which indicates a date of long. 120° to 130°W) of the Transantarctic Mountains include a 576 ± 21 Ma. The difference in the date derived from the feldspar of deposit of till on the summit plateau at an elevation of 2,500 m the glaciolacustrine sedimeyt may be caused by the presence of a above sea level and glaciolacustrine sediments along the Reedy component of Precambrian feldspar derived from the East Antarc- Glacier. The plateau till and underlying sediments consist of six tic Shield. units that appear to record the replacement of ice-free, periglacial conditions by ice cap glaciation of pre-Pleistocene age. Alterna- INTRODUCTION tively, the plateau till may have been deposited by the East Antarc- tic ice sheet either when it was thicker than at present or when the The glaciation of Antarctica in Cenozoic time was an important Wisconsin Range was lower in elevation. Feldspar size fractions event in the history of the Earth, the effects of which continue to from the plateau till have Rb/Sr ratios that increase with grain size influence climatic conditions and sea level. -
2019 Weddell Sea Expedition
Initial Environmental Evaluation SA Agulhas II in sea ice. Image: Johan Viljoen 1 Submitted to the Polar Regions Department, Foreign and Commonwealth Office, as part of an application for a permit / approval under the UK Antarctic Act 1994. Submitted by: Mr. Oliver Plunket Director Maritime Archaeology Consultants Switzerland AG c/o: Maritime Archaeology Consultants Switzerland AG Baarerstrasse 8, Zug, 6300, Switzerland Final version submitted: September 2018 IEE Prepared by: Dr. Neil Gilbert Director Constantia Consulting Ltd. Christchurch New Zealand 2 Table of contents Table of contents ________________________________________________________________ 3 List of Figures ___________________________________________________________________ 6 List of Tables ___________________________________________________________________ 8 Non-Technical Summary __________________________________________________________ 9 1. Introduction _________________________________________________________________ 18 2. Environmental Impact Assessment Process ________________________________________ 20 2.1 International Requirements ________________________________________________________ 20 2.2 National Requirements ____________________________________________________________ 21 2.3 Applicable ATCM Measures and Resolutions __________________________________________ 22 2.3.1 Non-governmental activities and general operations in Antarctica _______________________________ 22 2.3.2 Scientific research in Antarctica __________________________________________________________