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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. -
Itinerary Changes 2021
ITINERARY CHANGES 2021 Due to the ongoing COVID-19 pandemic ALE has made some adjustments to our operations in order to ensure the well-being of our guests and staff and to minimize the risk of bringing the infection into Antarctica. Below, you will find how our itineraries across all of our experiences for the 2021-22 season will be modified. Punta Arenas • You will be required to arrive in Punta Arenas 4 nights prior to your departure. • Welcome and Safety Briefings will be done virtually. • There will be no fitting periods for Rental Clothing in the Punta Arenas office, instead clothing will be picked up at a specified location and time. Further information will be given upon arrival in Punta Arenas. • Your Gear Checks will be done virtually and we will explain to you how this will be done once you arrive in Punta Arenas. • Flight Check in and Baggage Drop Off will be done using COVID-19 safe practices and you will receive more information on how this will be done on arrival in Punta Arenas. • You will be required to complete and sign a COVID-19 Declaration prior to your departure. Antarctica ALE has developed COVID-19 management procedures for Antarctica. These will be covered in your briefings in Punta Arenas and on arrival at Union Glacier. Please visit our FAQ for more detailed information on ALE’s COVID-19 Management Strategy https:// bit.ly/3g5e4ql EMPERORS & EXPLORERS Experience two Antarctic icons in one action- WALK WITH packed adventure. Fly by ski aircraft to the Gould Bay Emperor Penguin Colony on the remote coast EMPERORS of the Weddell Sea. -
Species Status Assessment Emperor Penguin (Aptenodytes Fosteri)
SPECIES STATUS ASSESSMENT EMPEROR PENGUIN (APTENODYTES FOSTERI) Emperor penguin chicks being socialized by male parents at Auster Rookery, 2008. Photo Credit: Gary Miller, Australian Antarctic Program. Version 1.0 December 2020 U.S. Fish and Wildlife Service, Ecological Services Program Branch of Delisting and Foreign Species Falls Church, Virginia Acknowledgements: EXECUTIVE SUMMARY Penguins are flightless birds that are highly adapted for the marine environment. The emperor penguin (Aptenodytes forsteri) is the tallest and heaviest of all living penguin species. Emperors are near the top of the Southern Ocean’s food chain and primarily consume Antarctic silverfish, Antarctic krill, and squid. They are excellent swimmers and can dive to great depths. The average life span of emperor penguin in the wild is 15 to 20 years. Emperor penguins currently breed at 61 colonies located around Antarctica, with the largest colonies in the Ross Sea and Weddell Sea. The total population size is estimated at approximately 270,000–280,000 breeding pairs or 625,000–650,000 total birds. Emperor penguin depends upon stable fast ice throughout their 8–9 month breeding season to complete the rearing of its single chick. They are the only warm-blooded Antarctic species that breeds during the austral winter and therefore uniquely adapted to its environment. Breeding colonies mainly occur on fast ice, close to the coast or closely offshore, and amongst closely packed grounded icebergs that prevent ice breaking out during the breeding season and provide shelter from the wind. Sea ice extent in the Southern Ocean has undergone considerable inter-annual variability over the last 40 years, although with much greater inter-annual variability in the five sectors than for the Southern Ocean as a whole. -
S. Antarctic Projects Officer Bullet
S. ANTARCTIC PROJECTS OFFICER BULLET VOLUME III NUMBER 8 APRIL 1962 Instructions given by the Lords Commissioners of the Admiralty ti James Clark Ross, Esquire, Captain of HMS EREBUS, 14 September 1839, in J. C. Ross, A Voya ge of Dis- covery_and Research in the Southern and Antarctic Regions, . I, pp. xxiv-xxv: In the following summer, your provisions having been completed and your crews refreshed, you will proceed direct to the southward, in order to determine the position of the magnet- ic pole, and oven to attain to it if pssble, which it is hoped will be one of the remarka- ble and creditable results of this expedition. In the execution, however, of this arduous part of the service entrusted to your enter- prise and to your resources, you are to use your best endoavours to withdraw from the high latitudes in time to prevent the ships being besot with the ice Volume III, No. 8 April 1962 CONTENTS South Magnetic Pole 1 University of Miohigan Glaoiologioal Work on the Ross Ice Shelf, 1961-62 9 by Charles W. M. Swithinbank 2 Little America - Byrd Traverse, by Major Wilbur E. Martin, USA 6 Air Development Squadron SIX, Navy Unit Commendation 16 Geological Reoonnaissanoe of the Ellsworth Mountains, by Paul G. Schmidt 17 Hydrographio Offices Shipboard Marine Geophysical Program, by Alan Ballard and James Q. Tierney 21 Sentinel flange Mapped 23 Antarctic Chronology, 1961-62 24 The Bulletin is pleased to present four firsthand accounts of activities in the Antarctic during the recent season. The Illustration accompanying Major Martins log is an official U.S. -
Alternative Formats If You Require This Document in an Alternative Format, Please Contact: [email protected]
Citation for published version: Younger, J, Clucas, GV, Kooyman, G, Wienecke, B, Rogers, A, Trathan, P, Hart, T & Miller, KJ 2015, 'Too much of a good thing: Sea ice extent may have forced emperor penguins into refugia during the last glacial maximum', Global Change Biology, vol. 21, no. 6, pp. 2215-2226. https://doi.org/10.1111/gcb.12882 DOI: 10.1111/gcb.12882 Publication date: 2015 Document Version Peer reviewed version Link to publication This is the peer reviewed version of the following article:Younger, J. L., Clucas, G. V., Kooyman, G. , Wienecke, B. , Rogers, A. D., Trathan, P. N., Hart, T. and Miller, K. J. (2015), Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum. Glob Change Biol, 21: 2215-2226, which has been published in final form at https://doi.org/10.1111/gcb.12882. This article may be used for non- commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. University of Bath Alternative formats If you require this document in an alternative format, please contact: [email protected] General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. -
Mid-Holocene Pulse of Thinning in the Weddell Sea Sector of the West Antarctic Ice Sheet
ARTICLE Received 9 Feb 2016 | Accepted 9 Jul 2016 | Published 22 Aug 2016 DOI: 10.1038/ncomms12511 OPEN Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet Andrew S. Hein1, Shasta M. Marrero1, John Woodward2, Stuart A. Dunning2,3, Kate Winter2, Matthew J. Westoby2, Stewart P.H.T. Freeman4, Richard P. Shanks4 & David E. Sugden1 Establishing the trajectory of thinning of the West Antarctic ice sheet (WAIS) since the last glacial maximum (LGM) is important for addressing questions concerning ice sheet (in)stability and changes in global sea level. Here we present detailed geomorphological and cosmogenic nuclide data from the southern Ellsworth Mountains in the heart of the Weddell Sea embayment that suggest the ice sheet, nourished by increased snowfall until the early Holocene, was close to its LGM thickness at 10 ka. A pulse of rapid thinning caused the ice elevation to fall B400 m to the present level at 6.5–3.5 ka, and could have contributed 1.4–2 m to global sea-level rise. These results imply that the Weddell Sea sector of the WAIS contributed little to late-glacial pulses in sea-level rise but was involved in mid-Holocene rises. The stepped decline is argued to reflect marine downdraw triggered by grounding line retreat into Hercules Inlet. 1 School of GeoSciences, University of Edinburgh, Drummond Street, Edinburgh EH8 9XP, UK. 2 Department of Geography, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, UK. 3 School of Geography, Politics and Sociology, Newcastle University, Newcastle upon Tyne NE1 7RU, UK. -
Mem170-Bm.Pdf by Guest on 30 September 2021 452 Index
Index [Italic page numbers indicate major references] acacamite, 437 anticlines, 21, 385 Bathyholcus sp., 135, 136, 137, 150 Acanthagnostus, 108 anticlinorium, 33, 377, 385, 396 Bathyuriscus, 113 accretion, 371 Antispira, 201 manchuriensis, 110 Acmarhachis sp., 133 apatite, 74, 298 Battus sp., 105, 107 Acrotretidae, 252 Aphelaspidinae, 140, 142 Bavaria, 72 actinolite, 13, 298, 299, 335, 336, 339, aphelaspidinids, 130 Beacon Supergroup, 33 346 Aphelaspis sp., 128, 130, 131, 132, Beardmore Glacier, 429 Actinopteris bengalensis, 288 140, 141, 142, 144, 145, 155, 168 beaverite, 440 Africa, southern, 52, 63, 72, 77, 402 Apoptopegma, 206, 207 bedrock, 4, 58, 296, 412, 416, 422, aggregates, 12, 342 craddocki sp., 185, 186, 206, 207, 429, 434, 440 Agnostidae, 104, 105, 109, 116, 122, 208, 210, 244 Bellingsella, 255 131, 132, 133 Appalachian Basin, 71 Bergeronites sp., 112 Angostinae, 130 Appalachian Province, 276 Bicyathus, 281 Agnostoidea, 105 Appalachian metamorphic belt, 343 Billingsella sp., 255, 256, 264 Agnostus, 131 aragonite, 438 Billingsia saratogensis, 201 cyclopyge, 133 Arberiella, 288 Bingham Peak, 86, 129, 185, 190, 194, e genus, 105 Archaeocyathidae, 5, 14, 86, 89, 104, 195, 204, 205, 244 nudus marginata, 105 128, 249, 257, 281 biogeography, 275 parvifrons, 106 Archaeocyathinae, 258 biomicrite, 13, 18 pisiformis, 131, 141 Archaeocyathus, 279, 280, 281, 283 biosparite, 18, 86 pisiformis obesus, 131 Archaeogastropoda, 199 biostratigraphy, 130, 275 punctuosus, 107 Archaeopharetra sp., 281 biotite, 14, 74, 300, 347 repandus, 108 Archaeophialia, -
A Very Short Guide to Union Glacier Camp
FOR STUDENTS A VERY SHORT GUIDE TO UNION GLACIER CAMP DIRECTORS Temujin Doran If you’re considering an expedition to Antarctica, here is a jaunty preview of your likely base DURATION 5 mins camp. Looks like fun! Not to mention beautiful and energetically staffed. Standards COMMON CORE ANCHOR STANDARDS FOR READING CCSS.ELA-LITERACY.CCRA.R.1 / Key Ideas and Details Read closely to determine what the text says explicitly and to make logical inferences from it; cite specific textual evidence when writing or speaking to support conclusions drawn from the text. CCSS.ELA-LITERACY.CCRA.R.2 / Key Ideas and Details Determine central ideas or themes of a text and analyze their development; summarize the key supporting details and ideas. CCSS.ELA-LITERACY.CCRA.R.7 / Integration of Knowledge and Ideas Integrate and evaluate content presented in diverse media and formats, including visually and quantitatively, as well as in words. CCSS.ELA-LITERACY.CCRA.R.8 / Integration of Knowledge and Ideas Delineate and evaluate the argument and specific claims in a text, including the validity of the reasoning as well as the relevance and sufficiency of the evidence. COMMON CORE ANCHOR STANDARDS FOR WRITING CCSS.ELA-LITERACY.CCRA.W.7 / Research to Build and Present Knowledge Conduct short as well as more sustained research projects based on focused questions, demonstrating understanding of the subject under investigation. CCSS.ELA-LITERACY.CCRA.W.9 / Research to Build and Present Knowledge Draw evidence from literary or informational texts to support analysis, reflection, and research. Themes Antarctica, fun, exploration Key Vocabulary camp, glacier, explorer 2 / A VERY SHORT GUIDE TO UNION GLACIER CAMP Pre-Screening Activity Grades K-2 & 3-6 Located in the Southern Ellsworth Mountains on the Union Glacier, Union Glacier Camp is the only one of it’s kind on the continent of Antarctica. -
Brought to You by TDA Global Cycling
The Last Degree Brought to you by TDA Global Cycling TDA GLOBAL CYCLING Price and Dates The final price will be announced in January 2016. You can expect it to be in the range of $65,000 - $75,000 USD. Depending on how many people join, we will offer one or more of these three departures: 1. Starting early December 2016 2. Starting late December 2016 (finishes early January 2017) 3. Starting early January 2017 The expedition from start to finish is anticipated to be 18 days. This is from the time the group first meets in Punta Arenas, Chile until the time they return there after the Last Degree expedition. Participants should have an open ended return ticket to their country of origin as a 7 day buffer may be needed for this expedition. What’s Included: • 18 days itinerary with support and guidance from a Certified Polar Guide from our partners ALE (see the ‘Who is ALE?’ FAQ question below) • 5 nights’ hotel accommodation in Punta Arenas (4 nights before and 1 night after Antarctica) • 2016 model Fat bikes (your’s to keep) provided by Specialized • Jacket (your’s to keep) provided by Canada Goose • Return flight from Punta Arenas, Chile to the Antarctic base camp at Union Glacier • A shared drop-off flight from Union Glacier to 89°South (at the Last Degree) by Twin Otter • A shared flight from the South Pole back to base camp by Twin Otter • All meals and accommodations at Union Glacier base camp • All food from 89°South drop-off point until the South Pole (mostly freeze dried meals) • Shared tents, camp stoves, cooking fuel • Detailed -
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flNiTflRCililCl A NEWS BULLETIN published quarterly by the NEW ZEALAND ANTARCTIC SOCIETY (INC) svs-r^s* ■jffim Nine noses pointing home. A team of New Zealand huskies on the way back to Scott Base after a run on the sea ice of McMurdo Sound. Black Island is in the background. Pholo by Colin Monteath \f**lVOL Oy, KUNO. O OHegisierea Wellington, atNew kosi Zealand, uttice asHeadquarters, a magazine. n-.._.u—December, -*r\n*1981 SOUTH GEORGIA SOUTH SANDWICH Is- / SOUTH ORKNEY Is £ \ ^c-c--- /o Orcadas arg \ XJ FALKLAND Is /«Signy I.uk > SOUTH AMERICA / /A #Borga ) S y o w a j a p a n \ £\ ^> Molodezhnaya 4 S O U T H Q . f t / ' W E D D E L L \ f * * / ts\ xr\ussR & SHETLAND>.Ra / / lj/ n,. a nn\J c y DDRONNING d y ^ j MAUD LAND E N D E R B Y \ ) y ^ / Is J C^x. ' S/ E A /CCA« « • * C",.,/? O AT S LrriATCN d I / LAND TV^ ANTARCTIC \V DrushsnRY,a«feneral Be|!rano ARG y\\ Mawson MAC ROBERTSON LAND\ \ aust /PENINSULA'5^ *^Rcjnne J <S\ (see map below) VliAr^PSobral arg \ ^ \ V D a v i s a u s t . 3_ Siple _ South Pole • | U SA l V M I IAmundsen-Scott I U I I U i L ' l I QUEEN MARY LAND ^Mir"Y {ViELLSWORTHTTH \ -^ USA / j ,pt USSR. ND \ *, \ Vfrs'L LAND *; / °VoStOk USSR./ ft' /"^/ A\ /■■"j■ - D:':-V ^%. J ^ , MARIE BYRD\Jx^:/ce She/f-V^ WILKES LAND ,-TERRE , LAND \y ADELIE ,'J GEORGE VLrJ --Dumont d'Urville france Leningradskaya USSR ,- 'BALLENY Is ANTARCTIC PENIMSULA 1 Teniente Matienzo arg 2 Esperanza arg 3 Almirante Brown arg 4 Petrel arg 5 Deception arg 6 Vicecomodoro Marambio arg ' ANTARCTICA 7 Arturo Prat chile 8 Bernardo O'Higgins chile 9 P r e s i d e n t e F r e i c h i l e : O 5 0 0 1 0 0 0 K i l o m e t r e s 10 Stonington I. -
Palaeoecological Changes in Populations of Antarctic Ice-Dependent Predators and Their Environmental Drivers
PALAEOECOLOGICAL CHANGES IN POPULATIONS OF ANTARCTIC ICE-DEPENDENT PREDATORS AND THEIR ENVIRONMENTAL DRIVERS Jane Younger BSc (Nanotechnology) (Hons), BAntSt (Hons) Submitted in fulfilment for the requirements for the degree of Doctor of Philosophy Institute for Marine and Antarctic Studies June 2015 DECLARATION OF ORIGINALITY This thesis contains no material which has been accepted for a degree or diploma by the University or any other institution, except by way of background information and duly acknowledged in the thesis, and to the best of my knowledge and belief no material previously published or written by another person except where due acknowledgement is made in the text of the thesis, nor does the thesis contain any material that infringes copyright. Jane Younger 22/06/2015 AUTHORITY OF ACCESS The publishers of the papers comprising Chapters 1, 2, 3 & 4 hold the copyright for that content, and access to the material should be sought from the journals, Global Change Biology (Chapters 1 &2) and BMC Evolutionary Biology (Chapters 3 & 4). The remaining non published content of the thesis may be made available for loan and limited copying and communication in accordance with the Copyright Act 1968.” CONTENTS List of figures ............................................................................................................................... vi List of tables ............................................................................................................................... vii Abbreviations ........................................................................................................................... -
Discover Antarctica
Discover Antarctica TRIP OVERVIEW Experience an immense world of stunning beauty in the heart of Antarctica from the comfort of a specially built camp located on the Union glacier. Choose from gentle walks across waves of blue-ice, excursions in a specially-adapted 4x4 van, wandering through the Elephant Head valley with its frozen ice pools and unusual rock formations, exploring ancient rock terraces at the ‘beach’, picnicking in hidden canyons, gazing out from the summit of Charles Peak over the broad expanse of Union Glacier and many many more. If you’re looking for excitement, choose from a range of adrenaline-charged activities from ice climbing in ancient crevasses and cross country skiing to more technical climbs or even a mini-overnight expedition. In camp there are Antarctic skills sessions and talks. Learn about polar navigation and communications or challenge yourself on a GPS course. Our experienced guides have a wealth of knowledge and visiting scientists often give talks on their latest Antarctic research. Or, simply relax in our heated multi-purpose tent with a book or DVD from our library. The highlight of this experience is a spectacular sightseeing flight along the spine of the Ellsworth Mountains, giving you a bird’s-eye view over the mountains and rocky exposed nunataks that peek out from the permanent ice sheet below. Participation Statement Adventure Peaks recognises that climbing, hill walking and mountaineering are activities with a danger of personalinjury or death. Participants in these activities should be aware of and accept these risks and be responsible for their own actions and involvement.