Mt. Sanford Ski and Climb Itinerary
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Wrangellia Flood Basalts in Alaska, Yukon, and British Columbia: Exploring the Growth and Magmatic History of a Late Triassic Oceanic Plateau
WRANGELLIA FLOOD BASALTS IN ALASKA, YUKON, AND BRITISH COLUMBIA: EXPLORING THE GROWTH AND MAGMATIC HISTORY OF A LATE TRIASSIC OCEANIC PLATEAU By ANDREW R. GREENE A THESIS SUBMITTED iN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE FACULTY OF GRADUATE STUDIES (Geological Sciences) UNIVERSITY OF BRITISH COLUMBIA (Vancouver) August 2008 ©Andrew R. Greene, 2008 ABSTRACT The Wrangellia flood basalts are parts of an oceanic plateau that formed in the eastern Panthalassic Ocean (ca. 230-225 Ma). The volcanic stratigraphy presently extends >2300 km in British Columbia, Yukon, and Alaska. The field relationships, age, and geochemistry have been examined to provide constraints on the construction of oceanic plateaus, duration of volcanism, source of magmas, and the conditions of melting and magmatic evolution for the volcanic stratigraphy. Wrangellia basalts on Vancouver Island (Karmutsen Formation) form an emergent sequence consisting of basal sills, submarine flows (>3 km), pillow breccia and hyaloclastite (<1 1cm), and subaerial flows (>1.5 km). Karmutsen stratigraphy overlies Devonian to Permian volcanic arc (—‘380-355 Ma) and sedimentary sequences and is overlain by Late Triassic limestone. The Karmutsen basalts are predominantly homogeneous tholeiitic basalt (6-8 wt% MgO); however, the submarine part of the stratigraphy, on northern Vancouver Island, contains picritic pillow basalts (9-20 wt% MgO). Both lava groups have overlapping initial and ENd, indicating a common, ocean island basalt (OIB)-type Pacific mantle source similar to the source of basalts from the Ontong Java and Caribbean Plateaus. The major-element chemistry of picrites indicates extensive melting (23 -27%) of anomalously hot mantle (‘—1500°C), which is consistent with an origin from a mantle plume head. -
Wrangell-St. Elias National Park and Preserve, Denali
Central Alaska Network Geologic Resources Evaluation Scoping Meeting Summary A geologic resources evaluation (GRE) scoping meeting was held from February 24 through 26, 2004 at the NPS regional office in Anchorage, Alaska to discuss geologic mapping in and around the parks and geologic resources management issues and concerns. The scoping meeting covered the three parks in the Central Alaska Network (CAKN) – Wrangell-St. Elias National Park and Preserve (WRST), Denali National Park and Preserve (DENA), and Yukon Charley Rivers National Preserve (YUCH). A summary of the status of geologic mapping and resource management issues is presented separately for each of these parks. The scoping summary is supplemented with additional geologic information from park planning documents, websites and NPS Geologic Resources Division documents. Purpose of the Geologic Resources Evaluation Program Geologic resources serve as the foundation of the park ecosystems and yield important information needed for park decision making. The National Park Service Natural Resource Challenge, an action plan to advance the management and protection of park resources, has focused efforts to inventory the natural resources of parks. The geologic component is carried out by the Geologic Resource Evaluation (GRE) Program administered by the NPS Geologic Resource Division. The goal of the GRE Program is to provide each of the identified 274 “Natural Area” parks with a digital geologic map, a geologic evaluation report, and a geologic bibliography. Each product is a tool to support the stewardship of park resources and each is designed to be user friendly to non-geoscientists. The GRE teams hold scoping meetings at parks to review available data on the geology of a particular park and to discuss the geologic issues in the park. -
Level III Ecoregions of the Continental United States 3
1. Coast Range 2. Puget Lowland Level III Ecoregions of the Continental United States 3. Willamette Valley 4. Cascades (Revised August 2002) 5. Sierra Nevada National Health and Environmental Effects Research Laboratory 6. Southern and Central California 77 Chaparral and Oak Woodlands 77 U.S. Environmental Protection Agency 7. Central California Valley 1 2 2 8. Southern California Mountains 9. Eastern Cascades Slopes and Foothills 15 41 42 10. Columbia Plateau 10 11. Blue Mountains 49 17 48 12. Snake River Plain 82 10 17 13. Central Basin and Range 1 3 17 14. Mojave Basin and Range 4 17 15. Northern Rockies 11 58 16. Idaho Batholith 16 17 17. Middle Rockies 43 50 17 58 18. Wyoming Basin 51 19. Wasatch and Uinta Mountains 50 9 46 51 58 20. Colorado Plateaus 17 21. Southern Rockies 83 59 78 12 17 84 22. Arizona/New Mexico 4 80 57 58 Plateau 52 60 42 53 62 23. Arizona/New Mexico 56 Mountains 62 84 24. Chihuahuan Deserts 18 44 47 25. Western High Plains 57 61 57. Huron/Erie Lake Plains 26. Southwestern Tablelands 64 84 58. Northeastern Highlands 5 19 69 27. Central Great Plains 54 59. Northeastern Coastal Zone 28. Flint Hills 13 60. Northern Appalachian Plateau 55 29. Central Oklahoma/Texas Plains 70 63 and Uplands 25 40 30. Edwards Plateau 1 7 61. Erie Drift Plain 20 31. Southern Texas Plains 21 27 62. North Central Appalachians 32. Texas Blackland Prairies 67 63. Middle Atlantic Coastal Plain 66 33. East Central Texas Plains 64. -
E-Book on Dynamic Geology of the Northern Cordillera (Alaska and Western Canada) and Adjacent Marine Areas: Tectonics, Hazards, and Resources
Dynamic Geology of the Northern Cordillera (Alaska and Western Canada) and Adjacent Marine Areas: Tectonics, Hazards, and Resources Item Type Book Authors Bundtzen, Thomas K.; Nokleberg, Warren J.; Price, Raymond A.; Scholl, David W.; Stone, David B. Download date 03/10/2021 23:23:17 Link to Item http://hdl.handle.net/11122/7994 University of Alaska, U.S. Geological Survey, Pacific Rim Geological Consulting, Queens University REGIONAL EARTH SCIENCE FOR THE LAYPERSON THROUGH PROFESSIONAL LEVELS E-Book on Dynamic Geology of the Northern Cordillera (Alaska and Western Canada) and Adjacent Marine Areas: Tectonics, Hazards, and Resources The E-Book describes, explains, and illustrates the have been subducted and have disappeared under the nature, origin, and geological evolution of the amazing Northern Cordillera. mountain system that extends through the Northern In alphabetical order, the marine areas adjacent to the Cordillera (Alaska and Western Canada), and the Northern Cordillera are the Arctic Ocean, Beaufort Sea, intriguing geology of adjacent marine areas. Other Bering Sea, Chukchi Sea, Gulf of Alaska, and the Pacific objectives are to describe geological hazards (i.e., Ocean. volcanic and seismic hazards) and geological resources (i.e., mineral and fossil fuel resources), and to describe the scientific, economic, and social significance of the earth for this region. As an example, the figure on the last page illustrates earthquakes belts for this dangerous part of the globe. What is the Northern Cordillera? The Northern Cordillera is comprised of Alaska and Western Canada. Alaska contains a series of parallel mountain ranges, and intervening topographic basins and plateaus. From north to south, the major mountain ranges are the Brooks Range, Kuskokwim Mountains, Aleutian Range, Alaska Range, Wrangell Mountains, and the Chugach Mountains. -
West Copper River Delta Landscape Assessment Cordova Ranger District Chugach National Forest 03/18/2003 Updated 04/19/2007
West Copper River Delta Landscape Assessment Cordova Ranger District Chugach National Forest 03/18/2003 updated 04/19/2007 Copper River Delta – circa 1932 – photo courtesy of Perry Davis Team: Susan Kesti - Team Leader, writer-editor, vegetation Milo Burcham – Wildlife resources, Subsistence Bruce Campbell – Lands, Special Uses Dean Davidson – Soils, Geology Rob DeVelice – Succession, Ecology Carol Huber – Minerals, Geology, Mining Tim Joyce – Fish subsistence Dirk Lang – Fisheries Bill MacFarlane – Hydrology, Water Quality Dixon Sherman – Recreation Linda Yarborough – Heritage Resources Table of Contents Executive Summary...........................................................................................vi Chapter 1 – Introduction ....................................................................................1 Purpose.............................................................................................................1 The Analysis Area .............................................................................................1 Legislative History .............................................................................................3 Relationship to the revised Chugach Land and Resource Management Plan...4 Chapter 2 – Analysis Area Description .............................................................7 Physical Characteristics ....................................................................................7 Location .........................................................................................................7 -
Wrangell-St. Elias Alaska
Wrangell - St. Elias National Park Service National Park and National Preserve U.S. Department of the Interior Wrangell-St. Elias Alaska The wildness of Wrangell-St. Elias National Park The Alaska National Interest Lands Conservation vest harbor seals, which feed on fish and In late summer, black and brown bears, drawn and Preserve is uncompromising, its geography Act (ANILCA) of 1980 allows the subsistence marine invertebrates. These species and many by ripening soapberries, frequent the forests awe-inspiring. Mount Wrangell, namesake of harvest of wildlife within the park, and preserve more are key foods in the subsistence diet of and gravel bars. Human history here is ancient one of the park's four mountain ranges, is an and sport hunting only in the preserve. Hunters the Ahtna and Upper Tanana Athabaskans, and relatively sparse, and has left a light imprint active volcano. Hundreds of glaciers and ice find Dall's sheep, the park's most numerous Eyak, and Tlingit peoples. Local, non-Native on the immense landscape. Even where people fields form in the high peaks, then melt into riv large mammal, on mountain slopes where they people also share in the bounty. continue to hunt, fish, and trap, most animal, ers and streams that drain to the Gulf of Alaska browse sedges, grasses, and forbs. Sockeye, Chi fish, and plant populations are healthy and self and the Bering Sea. Ice is a bridge that connects nook, and Coho salmon spawn in area lakes and Long, dark winters and brief, lush summers lend regulati ng. For the species who call Wrangell the park's geographically isolated areas. -
Yakutat Tlingit and Wrangell-St. Elias National Park and Preserve: an Ethnographic Overview and Assessment
Portland State University PDXScholar Anthropology Faculty Publications and Presentations Anthropology 2015 Yakutat Tlingit and Wrangell-St. Elias National Park and Preserve: An Ethnographic Overview and Assessment Douglas Deur Portland State University, [email protected] Thomas Thornton University of Oxford Rachel Lahoff Portland State University Jamie Hebert Portland State University Follow this and additional works at: https://pdxscholar.library.pdx.edu/anth_fac Part of the Social and Cultural Anthropology Commons Let us know how access to this document benefits ou.y Citation Details Deur, Douglas; Thornton, Thomas; Lahoff, Rachel; and Hebert, Jamie, "Yakutat Tlingit and Wrangell-St. Elias National Park and Preserve: An Ethnographic Overview and Assessment" (2015). Anthropology Faculty Publications and Presentations. 99. https://pdxscholar.library.pdx.edu/anth_fac/99 This Report is brought to you for free and open access. It has been accepted for inclusion in Anthropology Faculty Publications and Presentations by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible: [email protected]. National Park Service U.S. Department of the Interior Wrangell-St. Elias National Park and Preserve Yakutat Tlingit and Wrangell-St. Elias National Park and Preserve: An Ethnographic Overview and Assessment Douglas Deur, Ph.D. Thomas Thornton, Ph.D. Rachel Lahoff, M.A. Jamie Hebert, M.A. 2015 Cover photos: Mount St. Elias / Was'ei Tashaa (courtesy Wikimedia Commons); Mount St. Elias Dancers (courtesy Yakutat Tlingit Tribe / Bert Adams Sr.) Yakutat Tlingit and Wrangell-St. Elias National Park and Preserve: An Ethnographic Overview and Assessment 2015 Douglas Deur, Thomas Thornton, Rachel Lahoff, and Jamie Hebert Portland State University Department of Anthropology United States Department of the Interior National Park Service Wrangell-St. -
Wrangell Mountains Center
Wrangell Mountains Center 907-244-7717 • [email protected] Summer: P.O. Box MXY 20, Glennallen, Alaska 99588 Winter: P.O. Box 142972, Anchorage, Alaska 99514-2972 www.wrangells.org Understanding, appreciation, and stewardship of wildlands and mountain culture in Alaska through artistic and scientific inquiry in the Wrangell Mountains Wrangell Mountains Science Bibliography April 2012 Compiled by Vanessa Skean, Barry Hecht, Sarah Davies, Nabil Kashyap and Ben Shaine We developed this bibliography for anyone interested in or seeking more scientific information about the Wrangell Mountains and the surrounding lowlands. In particular, we aimed at providing references for: Residents and visitors who seek to go further in depth than is normally possible with conventional search engines or library catalogs Scientific researchers, particularly those already familiar with generally accessible references, and those interested in finding data and insights from the grey literature not readily located on academic or vendor shelves Participants and students in WMC programs, and their colleagues in universities, schools, and agencies throughout Alaska and the world Individuals seeking to learn more about literature which pre-dates the early 1990s typical era of computerized scientific searches, commonly the early 1990s, recognizing that the Wrangells has a longer history of scientific research than most boreal areas in the western hemisphere. Students and their teachers. The bibliography has its origins in a senior project authored by Vanessa Skean while a student at Alaska Pacific University in 2009, which catalogued the holdings of the Wrangell Mountains Center library, compiled and nurtured by many WMC staff, members, and program alumni over the years. -
Mt. Bona Expedition Itinerary
St. Elias Alpine Guides, LLC Wrangell-St. Elias National Park, Alaska (888) 933-5427 (907) 345-9048 www.steliasguides.com Alaska Mountaineering – Mt. Bona Expedition At 16,421 ft (5,005 m) Mt. Bona has it all: arctic weather, high elevation, and heavy glaciation. In fact, with its varied climbing, it provides an ideal “classroom” for those aspiring to climb the bigger peaks of Denali and St. Elias. This is a great mountain for teaching all aspects of glacier mountaineering and is a fantastic ski mountaineering objective. Participants should be in good physical condition with perhaps a Mt. Rainier climb or a winter ascent of a Colorado "Fourteener" in their resume. Trip Highlights: Challenging climbing in Alaska’s remote St. Elias Range. Perfect stepping stone to the elite peaks of Denali and Mt. St. Elias. Spectacular setting among the Wrangell and St. Elias Mountains. Hone your climbing skills with our experienced mountaineering guides. Mt. Bona Expedition – Detailed Itinerary The following is a sample itinerary for this trip. Due to individual abilities and goals, as well as the demanding environment of Alaska, all of our trips are customized as they unfold. The guide will constantly make decisions based on weather, logistics and group dynamics to maximize each day’s experience. There can be quite a bit of variation, but we always strive to make every trip your best ever. Some interesting facts about the mountain…….. Mt. Bona’s massif is covered almost entirely by icefields and glaciers. It is the principal source of ice for the Klutlan Glacier, which flows east for over 40 miles (64 km) into the Yukon Territory of Canada. -
Science and Stewardship to Protect and Sustain Wilderness Values: Eighth World Wilderness Congress Symposium
Managing Consumptive and Nonconsumptive Use in the United States Largest Wilderness Vicki Snitzler Barbara Cellarius Abstract—With more than 13 million acres (5,260,913 ha) of land the homelands and hunting and fishing grounds for at least and in excess of 9 million acres (3,642,171 ha) of designated Wilder- three Alaska Native groups (Ahtna, Upper Tanana, and ness, Alaska’s Wrangell-St. Elias National Park and Preserve is the Tlingit), and non-Native use and occupation of the region largest national park in the United States and includes the country’s dates back to the early 20th century. Under the provisions largest single-name wilderness area. Park managers face a variety of of ANILCA, subsistence hunting and fishing by local rural challenges in managing consumptive and nonconsumptive uses of the residents—Native and non-Native—are allowed on park park and its resources while at the same time protecting wilderness lands, recognizing the important role that the harvest of values. When it was created, efforts were made to protect the fragile wild resources has played in the lives of area residents. In resources of its varied ecosystems while at the same time honoring addition, sport hunters and fishers as well as tourists come well-established traditions of human use within the park. Under the to Wrangell-St. Elias in search of their desired experiences provisions of the park’s enabling legislation, subsistence hunting and with their own set of expectations. Nonconsumptive users and fishing by local rural residents—Native and non-Native—are may see Wrangell-St. -
The Architecture of Oceanic Plateaus Revealed by the Volcanic Stratigraphy of the Accreted Wrangellia Oceanic Plateau
The architecture of oceanic plateaus revealed by the volcanic stratigraphy of the accreted Wrangellia oceanic plateau Andrew R. Greene* James S. Scoates Dominique Weis Pacifi c Centre for Isotopic and Geochemical Research, Department of Earth and Ocean Sciences, University of British Columbia, Vancouver, British Columbia V6T1Z4, Canada Erik C. Katvala Department of Geoscience, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N1N4, Canada Steve Israel Yukon Geological Survey, 2099-2nd Ave, Whitehorse, Yukon Y1A2C6, Canada Graham T. Nixon British Columbia Geological Survey, P.O. Box 9320, Station Provincial Government, Victoria, British Columbia V8W9N3, Canada ABSTRACT gellia fl ood basalts were emplaced during a from low-viscosity, high-temperature tholei- single phase of tholeiitic volcanism ca. 230– itic basalts, sill-dominated feeder systems, The accreted Wrangellia fl ood basalts and 225 Ma, and possibly within as few as 2 Myr, limited repose time between fl ows (absence associated sedimentary rocks that compose onto preexisting submerged arc crust. There of weathering, erosion, sedimentation), sub- the prevolcanic and postvolcanic stratigraphy are distinct differences in volcanic stratig- marine versus subaerial emplacement, and provide an unparalleled view of the architec- raphy and basement composition between relative water depth (e.g., pillow basalt– ture, eruptive environment, and accumula- Northern and Southern Wrangellia. On volcaniclastic transition). tion and subsidence history of an oceanic Vancouver Island, ~6 km of high-Ti basalts, plateau. This Triassic large igneous province with minor amounts of picrites, record an INTRODUCTION extends for ~2300 km in the Pacifi c North- emergent sequence of pillow basalt, pil- west of North America, from central Alaska low breccia and hyaloclastite, and subaerial Approximately 3% of the ocean fl oor is and western Yukon (Nikolai Formation) to fl ows that overlie Devonian– Mississippian covered with oceanic plateaus or fl ood basalts, Vancouver Island (Karmutsen Formation), (ca. -
At Work in the Wrangells: a Photographic History, 1895-1966 Library of Congress Control Number: ISBN-10: 0-9907252-6-X ISBN-13: 978-0-9907252-6-8
At Work in the Wrangells A Photographic History, 1895-1966 Katherine J. Ringsmuth Our mission is to identify, evaluate and preserve the cultural resources of the park areas and to bring an understanding of these resources to the public. Congress has mandated that we preserve these resources because they are important components of our national and personal identity. Published by the United States Department of the Interior through the Government Printing Office National Park Service Wrangell-St. Elias National Park and Preserve At Work in the Wrangells: A Photographic History, 1895-1966 Library of Congress Control Number: ISBN-10: 0-9907252-6-X ISBN-13: 978-0-9907252-6-8 2016 Front Cover: 1950 Copper River Survey, surveyors. Courtesy of the Cordova Historical Museum, 02-40-10. Back Cover: “80 lbs. Packs.” WRST History Files, “Ahtna” Folder, 213. Original photo is located in the Miles Brothers Collection, Valdez Museum, 916. At Work in the Wrangells A Photographic History, 1895-1966 Katherine J. Ringsmuth Horse Creek Mary. WRST History Files, “Ahtna” Folder. Table of Contents Foreword .................................................................................................................vii Acknowledgments .................................................................................................xi Introduction: The Nature of Work .........................................................................1 Chapter One: Subsistence Lifeways ....................................................................19 Chapter Two: Mining