Glaciovolcanism on Earth and Mars: Products, Processes and Palaeoenvironmental Significance John L
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Holocene Tephras in Lake Cores from Northern British Columbia, Canada
935 Holocene tephras in lake cores from northern British Columbia, Canada Thomas R. Lakeman, John J. Clague, Brian Menounos, Gerald D. Osborn, Britta J.L. Jensen, and Duane G. Froese Abstract: Sediment cores recovered from alpine and subalpine lakes up to 250 km apart in northern British Columbia con- tain five previously unrecognized tephras. Two black phonolitic tephras, each 5–10 mm thick, occur within 2–4 cm of each other in basal sediments from seven lakes in the Finlay River – Dease Lake area. The upper and lower Finlay tephras are slightly older than 10 220 – 10 560 cal year B.P. and likely originate from two closely spaced eruptions of one or two large volcanoes in the northern Cordilleran volcanic province. The Finlay tephras occur at the transition between deglacial sediments and organic-rich postglacial mud in the lake cores and, therefore, closely delimit the termination of the Fraser Glaciation in northern British Columbia. Sediments in Bob Quinn Lake, which lies on the east edge of the northern Coast Mountains, contain two black tephras that differ in age and composition from the Finlay tephras. The lower Bob Quinn tephra is 3–4 mm thick, basaltic in composition, and is derived from an eruption in the Iskut River volcanic field about 9400 cal years ago. The upper Bob Quinn tephra is 12 mm thick, trachytic in composition, and probably 7000–8000 cal years old. A fifth tephra occurs as a cryptotephra near the top of two cores from the Finlay River area and is correlated to the east lobe of the White River tephra (ca. -
Tuyas: a Descriptive Genetic Classification
Dickinson College Dickinson Scholar Faculty and Staff Publications By Year Faculty and Staff Publications 3-2014 Tuyas: A Descriptive Genetic Classification J.K. Russell Benjamin R. Edwards Dickinson College Lucy Porritt C. Ryane Follow this and additional works at: https://scholar.dickinson.edu/faculty_publications Part of the Environmental Sciences Commons, Glaciology Commons, and the Volcanology Commons Recommended Citation Russell, J.K., B.R. Edwards, Lucy Porritt, and C. Ryane. "Tuyas: A Descriptive Genetic Classification." Quaternary Science Reviews 87 (2014): 70-81. https://www.sciencedirect.com/science/article/pii/ S027737911400002X This article is brought to you for free and open access by Dickinson Scholar. It has been accepted for inclusion by an authorized administrator. For more information, please contact [email protected]. Quaternary Science Reviews 87 (2014) 70e81 Contents lists available at ScienceDirect Quaternary Science Reviews journal homepage: www.elsevier.com/locate/quascirev Tuyas: a descriptive genetic classification J.K. Russell a,*, B.R. Edwards b, Lucy Porritt a,c, C. Ryane a a Volcanology & Petrology Laboratory, Department of Earth, Ocean & Atmospheric Sciences, University of British Columbia, Vancouver V6T 1Z4, Canada b Department of Earth Sciences, Dickinson College, Carlisle, PA 17013, USA c School of Earth Sciences, University of Bristol, Bristol, UK article info abstract Article history: We present a descriptive genetic classification scheme and accompanying nomenclature for glacio- Received 23 June 2013 volcanic edifices herein defined as tuyas: positive-relief volcanoes having a morphology resulting from ice Received in revised form confinement during eruption and comprising a set of lithofacies reflecting direct interaction between magma 23 December 2013 and ice/melt water. -
Cascade Range Forest Reserve
o-o 57TH CONGRESS,ESS, ) HOUSE OF REPR^ ^ VAT1VES. DOCUMENT %d Session ' No. 217. Professional Paper No. 9 ' Series H, Forestry, 6 DEPARTMENT OF THE INTERIOR UNITED STATES GEOLOGICAL SURVEY CHARLES D. WALCOTT, DiKECTOE FOREST CONDITIONS IN THE CASCADE RANGE FOREST RESERVE BY H. D. LANGILLE, FRED G. PLUMMER, ARTHUR DODWELL, THEODORE F. RIXON AND JOHN B. LEIBERG WITH AN INTRODUCTION KY HENRY GANNETT WASHINGTON GOVERNMENT PRINTING OFFICE 1903 CONTENTS. Page. Letter of transmittal .................................-..-.-....-.-..-----.-.--. ------ --- 13 INTRODUCTION, BY HENRY GANNETT . - ...........................................----------- 15 Boundaries ...........................................-.....-..-------..-------------. 15 Examinations........................................ ............-.........--------.- 18 Topography and geology -.-....................................--...---.....---------- 19 Climate .............................................................................. 24 Classification of lands .......-_...............,.......--..---------..-.--...----------- 24 Timber............................................................................... 24 NORTHERN PORTION OP CASCADE RANGE FOREST RESERVE, BY H. D. LANGILLE ................ 27 Area examined ....................................................................... 27 Topographic features.................................-...--...----.......-.-----..--.- 27 Climate .............................................................................. 28 Minerals and mining -
Geographic Characteristic of the Republic of Armenia
GEOGRAPHIC CHARACTERISTIC OF THE REPUBLIC OF ARMENIA TERRITORY Republic of Armenia is situated in south-western part of Asia. The country occupies the north-eastern part of Armenian plateau – between Caucasus and Nearest Asia (the inter- river territory between the middle flows of Kur and Araks rivers). The total territory is located in the latitude of 380 501 - 410 181 N and longitude of 430 271 - 460 371 E. In the north and east it borders with Georgia and Azerbaijan, and in the west and south – Turkey and Iran. The country’s area comprises 29743 km2, of which 46.8% - agricultural land, 34.9% - mountains, plateaus and other land, 12.7% - forests and 5.6% - water surface. The highest elevation of the country is the Peak of Aragats Mountain (4090 m), the deepest landslide – the Debed river canyon (390 m). The longest extension from north-west to south-east is 360 km, and from west to east – 200 km. The largest lake in the territory of Armenia is Sevan Lake (surface 1239 km2), the longest river is Araks – 158 km (the total length – 1072 km). 6 Marzes of the Republic of Armenia in Figures, 1998-2002 The top of Aragats mountain MOUNTAIN TOPS Name Place The height above sea level, m Aragats Aragats massif 4090 Kaputjugh Zangezur mountain range 3906 Ajdahak Geghama mountain range 3598 Spitakasar Geghama mountain range 3555 Vardenis Vardenis mountain range 3522 Aramasar Bargushat mountain range 3392 Ishkhanasar Gharabagh plateau 3549 Baghatssar Meghri mountain range 3250 Khustup Khustup-Katar mountain range 3214 Legli Javakhk mountain range 3157 Gogi Vayk mountain range 3113 Tej ler Pambak mountain range 3101 Mets Eghnakhagh Eghnakhagh mountain range 3042 Bovakar Halab mountain range 3016 Urasar Bazum mountain range 2993 Miapor Miapor mountain range 2993 Qashatagh Sevan mountain range 2901 Aray ler Aray massif 2577 Armenia is a mountainous country. -
The Tuya-Teslin Areal Northern British Columbia
BRITISH COLUMBIA DEPARTMENT OF MINES HON. E. C. CARSON, Minister JOHN F. WALKER, Dopulu Minis/#, BULLETIN No. 19 THE TUYA-TESLIN AREAL NORTHERN BRITISH COLUMBIA by K. DeP. WATSON and W. H.MATHEWS 1944 CONTENTS. P*GS SUMMARY.................................................................................................................................... 5 CHAPTER I.-Introduction ....................................................................................................... 6 Location............................................................................................................................. 6 Access................................................................................................................................. 7 Field-work .......................................................................................................................... 7 Acknowledgments ............................................................................................................. 7 Previous Work.................................................................................................................. 8 CHAPTER11.- I Topography ........................................................................................................................ 9 Kawdy Plateau.......................................................................................................... 9 Trenches ...................................................................................................................... 9 Teslin -
Geology of the Hoodoo Mountain Area (NTS 104B/14W)
Geology of the Hoodoo Mountain Area (NTS 104B/14W) by M.G. Mihalynuk1, A. Zagorevski2 and F. Cordey3 KEYWORDS: Hoodoo Mountain, Sphaler Creek, Stikine information is included herein; see Mihalynuk et al. assemblage, Stuhini Group, copper porphyry, Galore (2010, 2011a) for additional unit descriptions and Creek, Dirk prospect, Telena prospect, volcanic-hosted previous work. massive sulphide, Rock and Roll, Andrei Icefield, Iskut River LOCATION AND ACCESS INTRODUCTION Hoodoo Mountain area (NTS 104/14W) can be accessed either via the Bronson airstrip to the immediate Hoodoo Mountain area is located between the south, or via the Espaw camp located at kilometre 91 on enormous copper-gold resource defined at Galore Creek the incomplete Galore Creek access road, immediately and the past-producing gold deposits of the Bronson north of the map area. At the time of our field program, Camp. Reserves at Galore Creek in proven and probable both required air transport from Bob Quinn airstrip categories are 528 Mt grading 0.58% Cu, 0.32 g/t Au and located on Highway 37, approximately 400 km by road 6.02 g/t Ag (Gill et al., 2011). In the Bronson Camp, the from both Smithers and Terrace (Figure 1). Bob Quinn Snip mine produced 32 million grams of gold, 12 million airstrip is 60 km from both Bronson airstrip and Espaw grams silver and nearly 250 000 kilograms copper from Camp. about 1.2 million tonnes between 1991 and 1999; Johnny Mountain produced for less than two years with produced, proven, probable and “possible” categories totalling 0.622 Mt at 19.54 g/t Au (MINFILE, 2011). -
Wilderness Study Areas
I ___- .-ll..l .“..l..““l.--..- I. _.^.___” _^.__.._._ - ._____.-.-.. ------ FEDERAL LAND M.ANAGEMENT Status and Uses of Wilderness Study Areas I 150156 RESTRICTED--Not to be released outside the General Accounting Wice unless specifically approved by the Office of Congressional Relations. ssBO4’8 RELEASED ---- ---. - (;Ao/li:( ‘I:I)-!L~-l~~lL - United States General Accounting OfTice GAO Washington, D.C. 20548 Resources, Community, and Economic Development Division B-262989 September 23,1993 The Honorable Bruce F. Vento Chairman, Subcommittee on National Parks, Forests, and Public Lands Committee on Natural Resources House of Representatives Dear Mr. Chairman: Concerned about alleged degradation of areas being considered for possible inclusion in the National Wilderness Preservation System (wilderness study areas), you requested that we provide you with information on the types and effects of activities in these study areas. As agreed with your office, we gathered information on areas managed by two agencies: the Department of the Interior’s Bureau of Land Management (BLN) and the Department of Agriculture’s Forest Service. Specifically, this report provides information on (1) legislative guidance and the agency policies governing wilderness study area management, (2) the various activities and uses occurring in the agencies’ study areas, (3) the ways these activities and uses affect the areas, and (4) agency actions to monitor and restrict these uses and to repair damage resulting from them. Appendixes I and II provide data on the number, acreage, and locations of wilderness study areas managed by BLM and the Forest Service, as well as data on the types of uses occurring in the areas. -
Canadian Volcanoes, Based on Recent Seismic Activity; There Are Over 200 Geological Young Volcanic Centres
Volcanoes of Canada 1 V4 C.J. Hickson and M. Ulmi, Jan. 3, 2006 • Global Volcanism and Plate tectonics Where do volcanoes occur? Driving forces • Volcano chemistry and eruption types • Volcanic Hazards Pyroclastic flows and surges Lava flows Ash fall (tephra) Lahars/Debris Flows Debris Avalanches Volcanic Gases • Anatomy of an Eruption – Mt. St. Helens • Volcanoes of Canada Stikine volcanic belt Presentation Outline Anahim volcanic belt Wells Gray – Clearwater volcanic field 2 Garibaldi volcanic belt • USA volcanoes – Cascade Magmatic Arc V4 Volcanoes in Our Backyard Global Volcanism and Plate tectonics In Canada, British Columbia and Yukon are the host to a vast wealth of volcanic 3 landforms. V4 How many active volcanoes are there on Earth? • Erupting now about 20 • Each year 50-70 • Each decade about 160 • Historical eruptions about 550 Global Volcanism and Plate tectonics • Holocene eruptions (last 10,000 years) about 1500 Although none of Canada’s volcanoes are erupting now, they have been active as recently as a couple of 4 hundred years ago. V4 The Earth’s Beginning Global Volcanism and Plate tectonics 5 V4 The Earth’s Beginning These global forces have created, mountain Global Volcanism and Plate tectonics ranges, continents and oceans. 6 V4 continental crust ic ocean crust mantle Where do volcanoes occur? Global Volcanism and Plate tectonics 7 V4 Driving Forces: Moving Plates Global Volcanism and Plate tectonics 8 V4 Driving Forces: Subduction Global Volcanism and Plate tectonics 9 V4 Driving Forces: Hot Spots Global Volcanism and Plate tectonics 10 V4 Driving Forces: Rifting Global Volcanism and Plate tectonics Ocean plates moving apart create new crust. -
Ashfall to Pact Events, and the State of the Early Atmosphere
Newsletter of the Volcanology and Igneous Petrology Division Geological Association of Canada No. 64 April 27, 2007 From the President Canada has been doing well, the universities are produc- ing high-quality graduates in our field and the theses topics As a member of the selection committee for the Gelinas are more diverse than they were twenty years ago but still Gold Medal, I read several Ph.D. theses over a period of outstanding. several weeks. They were all excellent, cutting edge theses covering a wide variety of topics ranging from physical From the Editor volcanology through experimental petrology to petrology of mineralized granites. While reading the theses, I thought In this issue we have activity reports from Dante Canil at back to about twenty years ago when I first was on the the University of Victoria, Ryan Toole at the University of executive committee and the chair. At that time the division New Brunswick and Ben Edwards from Dickinson Col- discussed creating an award for the best thesis in volcanol- lege. There have been a few significant eruptions in the last ogy. A prominent member of the division, Leopold Gelinas few months. Nevado Del Huila in Colombia erupted on from Montreal, had recently died so we decided to name 17-18 April causing damage to houses and destroying 19 the award after him. Initially, the division had only a single bridges along the Páez and Símbola rivers. According to the award so we had to compare Ph.D. and M.Sc. theses but the New Zealand Institute of Geological & Nuclear Sciences, total number of theses submitted was significantly lower on Sunday, 19 March, rain triggered a lahar or volcanic than at present. -
MANAGEMENT PLAN November 2003
MANAGEMENT PLAN November 2003 for Stikine Country Protected Areas Mount Edziza Provincial Park Mount Edziza Protected Area (Proposed) Stikine River Provincial Park Spatsizi Plateau Wilderness Provincial Park Gladys Lake Ecological Reserve Ministry of Water, Land Pitman River Protected Area and Air Protection Environmental Stewardship Chukachida Protected Area Division Skeena Region Tatlatui Provincial Park Stikine Country Protected Areas M ANAGEMENT LAN P November 2003 Prepared by Skeena Region Environmental Stewardship Division Smithers BC Stikine Country Protected Areas Management Plan National Library of Canada Cataloguing in Publication Data British Columbia. Environmental Stewardship Division. Skeena Region. Stikine Country Protected Areas management plan Cover title: Management plan for Stikine Country Protected Areas. Issued by: Ministry of Water, Land and Air Protection, Environmental Stewardship Division, Skeena Region. “November 2003” “Mount Edziza Provincial Park, Mount Edziza Protected Area (Proposed), Stikine River Provincial Park, Spatsizi Plateau Wilderness Provincial Park, Gladys Lake Ecological Reserve, Pitman River Protected Area, Chukachida Protected Area, Tatlatui Provincial Park”—Cover. Also available on the Internet. Includes bibliographical references: p. ISBN 0-7726-5124-8 1. Protected areas - British Columbia – Stikine Region. 2. Provincial parks and reserves - British Columbia – Stikine Region. 3. Ecosystem management - British Columbia – Stikine Region. I. British Columbia. Ministry of Water, Land and Air Protection. -
Gazetteer of Yukon
YG Photo Tombstone Range GAZETTEER OF YUKON January 01, 2016 Geographical Names Program Heritage Resources Unit Cultural Services Branch Yukon Geographical Place Names Database The Heritage Resources Unit maintains and updates the Yukon Geographical Place Names Database of over 5,000 records. The Unit administers the program for naming and changing the names of Yukon geographical features such as lakes, rivers, creek and mountains, approved by the Minister of Tourism and Culture, based on recommendations of the Yukon Geographical Place Names Board. Mandate The mandate of the Heritage Resources Unit is to ensure that Yukon’s heritage resources are properly planned, researched, managed, protected, developed and interpreted in a manner consistent with the principles of responsible heritage resource management, the Historic Resources Act and Land Claims Heritage Agreements. Principles of Nomenclature The principles of nomenclature which guide the decisions of the Yukon Geographical Place Names Board (YGPNB) on geographical names are summarized as follows: 1. First priority shall be given to names with 5. When proposing names for previously long -standing local usage by the general unnamed features those for which no local public, particularly indigenous names in the names exist, preference shall be given to names local First Nation language. from native languages, names that describe the feature, name associated with historical events, 2. The Board has no jurisdiction over the names and names of people who have made an of municipalities, parks, territorial divisions or important contribution to the area where the other legal bodies that have been created by, or place name is proposed. result from legislation. -
Recognizing Ice-Contact Trachyte-Phonolite Lavas at The
RECOGNIZING ICE-CONTACT TRACHYTE-PHONOLITE LAVAS AT THE MOUNT EDZIZA VOLCANIC COMPLEX, BRITISH COLUMBIA, CANADA by Kristen A. LaMoreaux B.S., Kent State University, 2002 Submitted to the Graduate Faculty of Arts and Sciences in partial fulfillment of the requirements for the degree of Master of Science University of Pittsburgh 2008 UNIVERSITY OF PITTSBURGH ARTS AND SCIENCES This thesis was presented by Kristen A. LaMoreaux It was defended on June 17, 2008 and approved by Dr. Michael Ramsey Dr. Thomas Anderson Thesis Director: Dr. Ian Skilling ii Copyright © by Kristen A. LaMoreaux 2008 iii RECOGNIZING ICE-CONTACT TRACHYTE-PHONOLITE LAVAS AT THE MOUNT EDZIZA VOLCANIC COMPLEX, BRITISH COLUMBIA, CANADA Kristen A. LaMoreaux, M.S. University of Pittsburgh, 2008 Mount Edziza Volcanic Complex (MEVC) lies within the Northern Cordilleran Volcanic Province (NCVP), in northwest British Columbia, Canada. The eruption products have been emplaced in a variety of subaerial, sub-ice and subaqueous environments from about 8Ma to less than 2000 y.b.p. (Souther, 1992). Ice Peak Formation (IPF) trachyte lava flows of approximately 1Ma age (Souther, 1992) are exposed at Ornostay Bluff (OB) and Koosick Bluff (KB). These flows comprise basal flow breccias overlain by massive conchoidally-fractured lava with large, poorly-developed columns, and local flow banding. Edziza Formation (EF) approximately 1Ma (Souther, 1992) phonolite is exposed at Triangle Dome (TD). TD can broadly be divided into an upper and lower zone. The upper zone comprises poorly-developed columns in addition to prominent jointing. In the lower zone the columns are planar and 75cm- 3m-wide in the interior of the complex grading into fan-like and curved subhorizontal columns <75cm-wide in the outer margins of the lower zone.