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A Glacial Geomorphological Map of the Seno Skyring-Seno Otway
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Durham Research Online 1 A glacial geomorphological map of the Seno Skyring-Seno 2 Otway-Strait of Magellan region, southernmost Patagonia 3 4 HAROLD LOVELL*, CHRIS R. STOKES and MICHAEL J. BENTLEY 5 6 Department of Geography, Durham University, South Road, Durham, DH1 3LE UK; *[email protected], 7 [email protected], [email protected] 8 9 Abstract: 10 11 This paper presents a detailed glacial geomorphological map covering over 16,000 12 km2 of the Seno Skyring-Seno Otway-Strait of Magellan region in southernmost 13 Patagonia. It builds on previously published maps produced at a variety of scales 14 and is re-mapped in detail for the purposes of reconstructing the pre-Last Glacial 15 Maximum (LGM) glacial dynamics of the region, with particular focus on deciphering 16 the glacial landsystem north east of Seno Otway, which has been postulated as a 17 zone of ice streaming. Additional areas of interest include the reconstruction of 18 proglacial lakes dammed by the Skyring and Otway lobes; their drainage during 19 various stages of retreat; and a landsystems approach to the overall reconstruction 20 of the combined Skyring-Otway-Magellan ice lobes. Mapping was conducted using a 21 combination of Landsat and ASTER satellite imagery and oblique and vertical aerial 22 photographs, and is centred on approximately 53°S, 71°W. Seven main landform 23 types have been mapped: glacial lineations, moraines, meltwater channels, irregular 24 dissected ridges, eskers, outwash plains and former shorelines. -
Evolution of Ice-Dammed Proglacial Lakes in Última Esperanza, Chile: Implications from the Late-Glacial R1 Eruption of Reclús Volcano, Andean Austral Volcanic Zone
Andean Geology 38 (1): 82-97. January, 2011 Andean Geology formerly Revista Geológica de Chile www.scielo.cl/andgeol.htm Evolution of ice-dammed proglacial lakes in Última Esperanza, Chile: implications from the late-glacial R1 eruption of Reclús volcano, Andean Austral Volcanic Zone Charles R. Stern1, Patricio I. Moreno2, Rodrigo Villa-Martínez3, Esteban A. Sagredo2, 4, Alfredo Prieto5, Rafael Labarca6* 1 Department of Geological Sciences, University of Colorado, Boulder, CO 80309-0399, USA. [email protected] 2 Depto. de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile. [email protected] 3 Centro de Estudios del Cuaternario (CEQUA), Av. Bulnes 01890, Punta Arenas, Chile. [email protected] 4 Department of Geology, University of Cincinnati, Cincinnati, OH 45221, USA. [email protected] 5 Centro de Estudios del Hombre Austral, Instituto de la Patagonia, Universidad de Magallanes, Casilla 113-D, Punta Arenas, Chile. [email protected] 6 Programa de Doctorado Universidad Nacional del Centro de la Provincia de Buenos Aires (UNCPBA), Argentina. [email protected] * Permanent address: Juan Moya 910, Ñuñoa, Santiago, Chile. ABsTracT. Newly described outcrops, excavations and sediment cores from the region of Última Esperanza, Magalla- nes, contain tephra derived from the large late-glacial explosive R1 eruption of the Reclús volcano in the Andean Austral Volcanic Zone. New radiocarbon dates associated to these deposits refine previous estimates of the age, to 14.9 cal kyrs BP (12,670±240 14C yrs BP), and volume, to >5 km3, of this tephra. The geographic and stratigraphic distribution of R1 also place constraints on the evolution of the ice-dammed proglacial lake that existed east of the cordillera in this area between the termination of the Last Glacial Maximum (LGM) and the Holocene. -
Los Depósitos De Caída De Tefra
Romero et al., 2015. ARTICLE INFO Submitted: Aug 25, 2015 Pyroclastic Flow, 5 (1), 1-33 Accepted: Nov 06, 2015 Pyroclastic Flow 2015 Available Online: Nov 07, 2015 Journal of Geology- ISSN:0719-0565; www.pyflow.geohiggins.com Los depósitos de caída de tefra: Una breve revisión sobre su cuantificación y análisis para la clasificación de erupciones volcánicas explosivas, con ejemplos Latinoamericanos Tephra fallout deposits: A brief review on its quantification and analysis for the classification of explosive volcanic eruptions, with Latin-American examples. Jorge E. Romero1, 2, Jorge E. Bustillos3, José G. Viramonte4 ¹Departamento de Geología, Universidad de Atacama. Copayapu 485, Copiapó, Chile. ²Centro de Investigación y Difusión de Volcanes de Chile, Santiago, Chile. 3Facultad de Geología, Minas, Petróleos y Ambiental, Carrera de Ingeniería en Geología. Universidad Central del Ecuador - Casilla 872 A, (+593) 22555301 4INENCO/GEONORTE Univ. Nacional de Salta-CONICET, Av. Bolivia 5150–4400, Salta, Argentina Mail de contacto/Contact e-mail: [email protected] RESUMEN La cuantificación de los depósitos volcánicos es una de las herramientas más utilizadas en la actualidad para clasificar la magnitud de la actividad volcánica y determinar los peligros volcánicos asociados. En el caso especial de las erupciones explosivas, generalmente este procedimiento involucra trabajos detallados sobre el volumen y la distribución de los materiales de caída. El presente trabajo realiza una revisión bibliográfica que abarca 177 contribuciones publicadas desde principios del siglo 20 hasta los más recientes del 2015, con el fin de definir conceptos, metodologías y modelos que permitan aproximar cálculos realistas de la cantidad de material emitido en depósitos de tefra, los errores más comunes y los aspectos que ayudan a describir y caracterizar estos depósitos de acuerdo a sus componentes. -
Volcanic Fluxes Over the Last Millennium As Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)
geosciences Article Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica) Raffaello Nardin 1 , Alessandra Amore 1, Silvia Becagli 1, Laura Caiazzo 2, Massimo Frezzotti 3, Mirko Severi 1,* , Barbara Stenni 4 and Rita Traversi 1 1 Department of Chemistry “Ugo Schiff”, University of Florence, 50019 Florence, Italy; raffaello.nardin@unifi.it (R.N.); [email protected] (A.A.); silvia.becagli@unifi.it (S.B.); rita.traversi@unifi.it (R.T.) 2 National Institute of Nuclear Physics (INFN), 50019 Florenc, Italy; laura.caiazzo@unifi.it 3 Department of Sciences, Università degli Studi Roma Tre, 00146 Rome, Italy; [email protected] 4 Department of Environmental Sciences, Informatics and Statistics, Ca’ Foscari University of Venice, 30170 Venezia Mestre, Italy; [email protected] * Correspondence: mirko.severi@unifi.it Received: 15 November 2019; Accepted: 16 January 2020; Published: 20 January 2020 Abstract: Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2–3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 13 mm we yr 1) and the 5-cm sampling resolution allowed a preliminary ± − counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. -
3.Nishida Riesco.Pmd
11 PRELIMINARY REPORT ON PERMINERALIZED PLANT REMAINS POSSIBLY FROM THE PALEOCENE CHORRILLO CHICO FORMATION, MAGALLANES REGION, CHILE Harufumi Nishida1, Kazuhiko Uemura2, Kazuo Terada3, Toshihiro Yamada2, Miguel Rancusi Herrera4, and Luis Felipe Hinojosa5 1Faculty of Science and Engineering, Chuo University, Bunkyo, Tokyo 112-8551, Japan E-mail: [email protected] 2National Science Museum, Tokyo 169-0073, Japan 3Fukui Prefectural Dinosaur Museum, Fukui 911-8601, Japan 4Colegio Compania de Maria, Santiago, Chile 5Facultad de Ciencias, Universidad de Chile, Santiago, Chile Introduction New assemblages of well-preserved permineralized plant fossils were found in southern Patagonia on the southern shore of Riesco Island (Isla Riesco), northwest of Punta Arenas, in the Magallanes (XII) Region of Chile (Figs. 1, 2A, B). The fragments of plant organs and tissues in various sizes and degrees of preservation are present in calcium-carbonate concretions collected at the mouth of the Rio Boer river near Punta Sunshine (53°01.8’S, 71°55.6’W). The concretions are marine in origin, containing molluskcs that may help age determination and biostratigraphic correlation of their source beds. Thick Upper Cretaceous to Tertiary sediments with a NW-SE trend dipping NE are well exposed at Riesco Island. The concretions are probably derived from sediments in the Palaeocene Chorrillo Chico Formation exposed along the Rio Boer running south into the Otway Sound (Seno Otway), because no other formation is distributed in the river drainage area (Mapa geologico de Chile, Escala 1: 1,000,000, 2002). This assignation is further supported by evidence that the Chorrillo Chico Formation is characterized by lithofacies containing calcareous concretions reported by Charrier and Lahsen (1969). -
PATAGONIAN EXPEDITION RACE 10Th Anniversary of the Last Wild Race
PATAGONIAN EXPEDITION RACE 10th Anniversary of The Last Wild Race 10th Anniversary of The Last Wild Race begins Tuesday, February 14th International field of 19 teams – 76 adventurers – to take on an extreme wilderness course Racing for the awareness and conservation of Chilean Patagonia PUNTA ARENAS, CHILE (February 13th, 2012) Nineteen teams of eco-adventurers will head into the Patagonian wilderness on Tuesday, February 14th, in an extreme- endurance environmental multisport race designed to protect one of the most remote parts of the planet. Teams from Croatia, New Zealand, Great Britain, United States, Japan, Russia, Brazil, France, Denmark, Czech Republic, South Africa, Ireland, Kazakhstan, Finland, Canada, Spain, Australia, Colombia and Chile will accept the challenge and fight to reach the finish line. The racers will compete non-stop through 581km of one of the world’s untouched, great wildernesses. However, the kayak, bike and trekking race is so challenging that fewer than half the teams are likely to complete the course. This year’s annual race begins in Punta Arenas and travels down the coast of Peninsula Brunswick, home of the Huemul Conservation Project, toward the ominous and unexplored terrain of Tierra del Fuego. First, teams must cross the Strait of Magellan, reaching Dawson Island, an area which has not been accessible to the public until now. They will then portage their kayaks across the island’s lakes and scrub until they reach the inviting tails winds of Canal Whiteside, completing an 85km kayak portion. The route then passes through Karukinka Natural Park, owned by the Wildlife Conservation Society (WCS), home to emblematic Patagonian wildlife including guanacos and Andean condors, as well as pristine forests, snow-capped peaks, glacial lakes and the infamous peat bogs. -
42 Papers Human Origin Sites and the World Heritage Convention In
42 World Heritage papers42 World Heritage papers HEADWORLD HERITAGES 5 NIO M O UN IM D R T IA A L • P • W L O A I R D L D N H O E M R I E TA IN G O E • PATRIM United Nations World Educational, Scientific and Heritage Cultural Organization Convention Human Origin Sites and the GOBIERNO DE World Heritage Convention in the Americas PUEBLAACCIONES QUE TRANSFORMAN In support of UNESCO’s 70th Anniversary Celebrations United Nations Educational, Scientific and Cultural Organization VOLUME I Human Origin Sites and the Heritage World in the Convention Americas. I Volume For more information contact: UNESCO World Heritage Centre papers NIO M O UN IM D R T IA A L • P • W L O A I 7, place Fontenoy R D L D N H O E M 75352 Paris 07 SP France R E I TA IN G O Tel: 33 (0)1 45 68 24 96 E • PATRIM Fax: 33 (0)1 45 68 55 70 United Nations World Educational, Scientific and Heritage 9 789231 001406 http://whc.unesco.org HeritageWorld Cultural Organization Convention Human Origin Sites and the World Heritage Convention in the Americas HEADS 5 VOLUME I Published in 2015 by the United Nations Educational, Scientific and Cultural Organization, 7, place de Fontenoy, 75352 Paris 07 SP, France and the UNESCO Office in Mexico, Presidente Masaryk 526, Polanco, Miguel Hidalgo, 11550 Ciudad de Mexico, D.F., Mexico. © UNESCO 2015 ISBN 978-92-3-100140-6 This publication is available in Open Access under the Attribution-ShareAlike 3.0 IGO (CC-BY-SA 3.0 IGO) license (http://creativecommons.org/licenses/by-sa/3.0/igo/). -
The Quaternary Glaciation of Chile: a Review
Revista Chilena de Historia Natural 67: 369 - 383, 1994 The quaternary glaciation of Chile: a review La glaciaci6n cuaternaria de Chile: una revision CHALMERS M. CLAPPERTON Department of Geography, University of Aberdeen, Aberdeen AB9 2UF, Scotland ABSTRACT A review of literature on the Quaternary glaciations of Chile shows that repeated advances occurred in the central and southern Andes. However, radiocarbon dated sequences have been obtained only for the last glaciation in the Chilean Lakes Region and in the Paine and Magallanes regions of Patagonia. These suggest that glacier lobes from the icefields advanced at least five times during the last glaciation. Reconstruction of palaeo-snowlines indicates that the climatic belts during the glacial interval were basically similar to the modem, but that effective precipitation was greater in the north (arid) of Chile, and that the humid westerlies in temperate latitudes were displaced 5-6° to the north. Snow line descended 800-1 OOOm. While glaciers in the Lakes Region reached their maximum extension at ca.20-21,000 yr BP, those in the south and north of the country may have been more extensive at ca.27,000 yr BP, due to the greater humidity available. Some glacier lobes from the southemmost icefields of Chile were still expanded at ca.l2,000 yr BP and may have readvanced during the interval I 2,000-9000 yr BP. Key words: Southern Andes, glacier dynamics, paleo-snowlines, paleolakes. RESUMEN Una revision de la literatura sob re glaciaciones cuaternarias en Chile muestra, que en Ios Andes del centro y sur, han ocurrido repetidamente avances de glaciares. -
Late Glacial and Holocene Paleogeographical and Paleoecological Evolution of the Seno Skyring and Otway Fjord Systems in the Magellan Region
Anales Instituto Patagonia (Chile), 2013. 41(2):5-26 5 LATE GLACIAL AND HOLOCENE PALEOGEOGRAPHICAL AND PALEOECOLOGICAL EVOLUTION OF THE SENO SKYRING AND OTWAY FJORD SYSTEMS IN THE MAGELLAN REGION EVOLUCIÓN PALEOGEOGRÁFICA Y PALEOECOLÓGICA DEL SISTEMA DE FIORDOS DEL SENO SKYRING Y SENO OTWAY EN LA REGIÓN DE MAGALLANES DURANTE EL TARDIGLACIAL Y HOLOCENO Kilian, R.1, Baeza, O.1, Breuer, S., Ríos, F.1, Arz, H.2, Lamy, F.3, Wirtz, J.1, Baque, D.1, Korf, P.1, Kremer, K.1, Ríos, C.4, Mutschke, E.5, Simon, M.1, De Pol-Holz, R.6, Arevalo, M.7, Wörner, G.8, Schneider, C.9 & Casassa, G.10 RESUMEN Los sistemas de terrazas evidencian que el Seno Otway y Skyring y el fiordo de Última Esperanza, formaron el mayor sistema lacustre proglacial interconectado de la Patagonia Austral (5.700 km2) durante la deglaciación temprana (< 18 a 14 ka BP). Este sistema drenaba por el este del Seno Otway hacia el Atlántico. El retroceso de los glaciares desde el Canal Jerónimo alrededor de 14,0 cal kyr causó un mega evento de desagüe (320 km3), que bajó 95 metros el nivel lacustre en el Seno Otway e inició una transgresión marina, así como una intensa erosión a largo plazo de las líneas de costa que quedaron expuestas alrededor del Seno Otway. Entre 11 a 10 ka BP se produjo una transgresión marina más limitada en el sector oriental del Seno Skyring, probablemente a través del Canal Gajardo. Esto fue causado por el retroceso de los glaciares alrededor del Gran Campo Nevado (GCN) durante el Máximo Termal del Holoceno Temprano en el Hemisferio Sur (después de 12 ka BP). -
Expedition in the Remote
Fitz Roy expedition © 2010 Luis Bertea R. EXCLUSIVE EXPLORATION CRUISE, ESPECIALLY DEDICATED TO PHOTOGRAPHY AND WILDLIFE OBSERVATION IN THE REMOTE REGION OF TIERRA DEL FUEGO AND THE MAGELLAN STRAIT 2 www.expedicionfitzroy.com Cruceros de Expedición 3 Hyatt sound © 2010 Luis Bertea R. 4 www.expedicionfitzroy.com Dear friends... We’d like to invite you to join us on this exclusive Nature Expedition aboard the M/N Forrest, sailing through the fjords of Patagonia and visiting Francisco Coloane Marine Park in the Magellan Strait. This expedition, guided by photographers and nature experts, is designed for all those who have a love for photography and nature. We are committed to making your experience in Patagonia unique, an opportunity to explore pristine landscapes visited by very few. We look forward to having you with this adventure! Fitz Roy Expedition Cruceros de Expedición 5 © 2010 Luis Bertea R. 6 www.expedicionfitzroy.com Two companies, one concept Patagonia Photosafaris has formed an This alliance has allowed us to create an alliance with Expedición Fitz Roy, to offer exploration cruise in which we’ll embark on expedition cruises through the Magellan a search for the most fascinating nature Strait and Tierra del Fuego aboard the spots Patagonia has to offer. M/N Forrest, a tourism vessel especially equipped for sailing in this area. Join us on one of our adventure cruises and discover with us this wild geography This motorship was conceived as much in its purest state, just as it was 500 years more than just a vessel to carry out ago when Ferdinand Magellan became the regular itinerary daytrips to the spectacular first European to explore it. -
Evaluating the Role of Tectonics, Eustasy, and Climate On
This manuscript is a preprint and has been submitted to Basin Research for peer review. Please note that, this manuscript has to be formally accepted for publication. Subsequent versions may have slight differences in content according to the peer review process. If accepted, the final version of this manuscript will be available via the ‘Peer-reviewed Publication DOI’ link on the right information panel of this website. We welcome feedback on the content of this manuscript. Please feel free to contact any of the authors. EVALUATING THE ROLE OF TECTONICS, EUSTASY, AND CLIMATE ON THE MAASTRICHTIAN-DANIAN TRANSGRESSION IN THE MAGALLANES- AUSTRAL BASIN (CHILEAN PATAGONIA) Huber A. Rivera1, 2, *, Jacobus P. Le Roux1, Marcelo Farías1, Néstor M. Gutiérrez1, Alejandro Sánchez3, Sylvia Palma-Heldt4, Lissett Celle1 1Departamento de Geología, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile 2Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, IRD, IFSTTAR, ISTerre, 38000 Grenoble, France 3Departamento de Ingeniería en Minas, Universidad de Santiago de Chile, Av. O'Higgins 3363, Estación Central, Santiago, Chile 4Departamento de Ciencias de la Tierra, Universidad de Concepción, Barrio Universitario S/N°, Concepción, Chile *Corresponding author: [email protected]; [email protected] Page 1 of 65 Basin Research 1 2 3 Evaluating the role of tectonics, eustasy, and climate on the Maastrichtian-Danian 4 5 6 transgression in the Magallanes-Austral Basin (Chilean Patagonia) 7 8 9 Huber A. Rivera1, 2, *, Jacobus P. Le Roux1, Marcelo Farías1, Néstor M. Gutiérrez1, 10 3 4 1 11 Alejandro Sánchez , Sylvia Palma-Heldt , Lissett Celle 12 13 1Departamento de Geología, FCFM, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile 14 15 2Univ. -
A Glacial Geomorphological Map of the Seno Skyring-Seno Otway-Strait of Magellan Region, Southernmost Patagonia.', Journal of Maps., 7 (1)
Durham Research Online Deposited in DRO: 29 August 2013 Version of attached le: Accepted Version Peer-review status of attached le: Peer-reviewed Citation for published item: Lovell, H. and Stokes, C.R. and Bentley, M.J. (2012) 'A glacial geomorphological map of the Seno Skyring-Seno Otway-Strait of Magellan region, southernmost Patagonia.', Journal of maps., 7 (1). pp. 318-339. Further information on publisher's website: http://dx.doi.org/10.4113/jom.2011.1156 Publisher's copyright statement: Additional information: Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full DRO policy for further details. Durham University Library, Stockton Road, Durham DH1 3LY, United Kingdom Tel : +44 (0)191 334 3042 | Fax : +44 (0)191 334 2971 https://dro.dur.ac.uk 1 A glacial geomorphological map of the Seno Skyring-Seno 2 Otway-Strait of Magellan region, southernmost Patagonia 3 4 HAROLD LOVELL*, CHRIS R. STOKES and MICHAEL J. BENTLEY 5 6 Department of Geography, Durham University, South Road, Durham, DH1 3LE UK; *[email protected], 7 [email protected], [email protected] 8 9 Abstract: 10 11 This paper presents a detailed glacial geomorphological map covering over 16,000 12 km2 of the Seno Skyring-Seno Otway-Strait of Magellan region in southernmost 13 Patagonia.