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Geologic Maps of the Eastern Alaska Range, Alaska, (44 Quadrangles, 1:63360 Scale)
Report of Investigations 2015-6 GEOLOGIC MAPS OF THE EASTERN ALASKA RANGE, ALASKA, (44 quadrangles, 1:63,360 scale) descriptions and interpretations of map units by Warren J. Nokleberg, John N. Aleinikoff, Gerard C. Bond, Oscar J. Ferrians, Jr., Paige L. Herzon, Ian M. Lange, Ronny T. Miyaoka, Donald H. Richter, Carl E. Schwab, Steven R. Silva, Thomas E. Smith, and Richard E. Zehner Southeastern Tanana Basin Southern Yukon–Tanana Upland and Terrane Delta River Granite Jarvis Mountain Aurora Peak Creek Terrane Hines Creek Fault Black Rapids Glacier Jarvis Creek Glacier Subterrane - Southern Yukon–Tanana Terrane Windy Terrane Denali Denali Fault Fault East Susitna Canwell Batholith Glacier Maclaren Glacier McCallum Creek- Metamorhic Belt Meteor Peak Slate Creek Thrust Broxson Gulch Fault Thrust Rainbow Mountain Slana River Subterrane, Wrangellia Terrane Phelan Delta Creek River Highway Slana River Subterrane, Wrangellia Terrane Published by STATE OF ALASKA DEPARTMENT OF NATURAL RESOURCES DIVISION OF GEOLOGICAL & GEOPHYSICAL SURVEYS 2015 GEOLOGIC MAPS OF THE EASTERN ALASKA RANGE, ALASKA, (44 quadrangles, 1:63,360 scale) descriptions and interpretations of map units Warren J. Nokleberg, John N. Aleinikoff, Gerard C. Bond, Oscar J. Ferrians, Jr., Paige L. Herzon, Ian M. Lange, Ronny T. Miyaoka, Donald H. Richter, Carl E. Schwab, Steven R. Silva, Thomas E. Smith, and Richard E. Zehner COVER: View toward the north across the eastern Alaska Range and into the southern Yukon–Tanana Upland highlighting geologic, structural, and geomorphic features. View is across the central Mount Hayes Quadrangle and is centered on the Delta River, Richardson Highway, and Trans-Alaska Pipeline System (TAPS). Major geologic features, from south to north, are: (1) the Slana River Subterrane, Wrangellia Terrane; (2) the Maclaren Terrane containing the Maclaren Glacier Metamorphic Belt to the south and the East Susitna Batholith to the north; (3) the Windy Terrane; (4) the Aurora Peak Terrane; and (5) the Jarvis Creek Glacier Subterrane of the Yukon–Tanana Terrane. -
2020 January Scree
the SCREE Mountaineering Club of Alaska January 2020 Volume 63, Number 1 Contents Mount Anno Domini Peak 2330 and Far Out Peak Devils Paw North Taku Tower Randoism via Rosie’s Roost "The greatest danger for Berlin Wall most of us is not that our aim is too high and we Katmai and the Valley of Ten Thousand Smokes miss it, but that it is too Peak of the Month: Old Snowy low and we reach it." – Michelangelo JANUARY MEETING: Wednesday, January 8, at 6:30 p.m. Luc Mehl will give the presentation. The Mountaineering Club of Alaska www.mtnclubak.org "To maintain, promote, and perpetuate the association of persons who are interested in promoting, sponsoring, im- proving, stimulating, and contributing to the exercise of skill and safety in the Art and Science of Mountaineering." This issue brought to you by: Editor—Steve Gruhn assisted by Dawn Munroe Hut Needs and Notes Cover Photo If you are headed to one of the MCA huts, please consult the Hut Gabe Hayden high on Devils Paw. Inventory and Needs on the website (http://www.mtnclubak.org/ Photo by Brette Harrington index.cfm/Huts/Hut-Inventory-and-Needs) or Greg Bragiel, MCA Huts Committee Chairman, at either [email protected] or (907) 350-5146 to see what needs to be taken to the huts or repaired. All JANUARY MEETING huts have tools and materials so that anyone can make basic re- Wednesday, January 8, at 6:30 p.m. at the BP Energy Center at pairs. Hutmeisters are needed for each hut: If you have a favorite 1014 Energy Court in Anchorage. -
Melt Regimes, Stratigraphy, Flow Dynamics and Glaciochemistry of Three Glaciers in the Alaska Range
Journal of Glaciology, Vol. 58, No. 207, 2012 doi: 10.3189/2012JoG10J238 99 Melt regimes, stratigraphy, flow dynamics and glaciochemistry of three glaciers in the Alaska Range Seth CAMPBELL,1,2 Karl KREUTZ,1 Erich OSTERBERG,3 Steven ARCONE,2 Cameron WAKE,4 Douglas INTRONE,1 Kevin VOLKENING,5 Dominic WINSKI1 1Climate Change Institute and Department of Earth Sciences, University of Maine, Orono, ME, USA E-mail: [email protected] 2US Army Cold Regions Research and Engineering Laboratory, Hanover, NH, USA 3Department of Earth Sciences, Dartmouth College, Hanover, NH, USA 4Complex Systems Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH, USA 5Department of Chemical and Biological Engineering, Montana State University, Bozeman, MT, USA ABSTRACT. We used ground-penetrating radar (GPR), GPS and glaciochemistry to evaluate melt regimes and ice depths, important variables for mass-balance and ice-volume studies, of Upper Yentna Glacier, Upper Kahiltna Glacier and the Mount Hunter ice divide, Alaska. We show the wet, percolation and dry snow zones located below 2700 m a.s.l., at 2700 to 3900 m a.s.l. and above 3900 m a.s.l., respectively. We successfully imaged glacier ice depths upwards of 480 m using 40–100 MHz GPR frequencies. This depth is nearly double previous depth measurements reached using mid-frequency GPR systems on temperate glaciers. Few Holocene-length climate records are available in Alaska, hence we also assess stratigraphy and flow dynamics at each study site as a potential ice-core location. Ice layers in shallow firn cores and attenuated glaciochemical signals or lacking strata in GPR profiles collected on Upper Yentna Glacier suggest that regions below 2800 m a.s.l. -
Alaska Range
Alaska Range Introduction The heavily glacierized Alaska Range consists of a number of adjacent and discrete mountain ranges that extend in an arc more than 750 km long (figs. 1, 381). From east to west, named ranges include the Nutzotin, Mentas- ta, Amphitheater, Clearwater, Tokosha, Kichatna, Teocalli, Tordrillo, Terra Cotta, and Revelation Mountains. This arcuate mountain massif spans the area from the White River, just east of the Canadian Border, to Merrill Pass on the western side of Cook Inlet southwest of Anchorage. Many of the indi- Figure 381.—Index map of vidual ranges support glaciers. The total glacier area of the Alaska Range is the Alaska Range showing 2 approximately 13,900 km (Post and Meier, 1980, p. 45). Its several thousand the glacierized areas. Index glaciers range in size from tiny unnamed cirque glaciers with areas of less map modified from Field than 1 km2 to very large valley glaciers with lengths up to 76 km (Denton (1975a). Figure 382.—Enlargement of NOAA Advanced Very High Resolution Radiometer (AVHRR) image mosaic of the Alaska Range in summer 1995. National Oceanic and Atmospheric Administration image mosaic from Mike Fleming, Alaska Science Center, U.S. Geological Survey, Anchorage, Alaska. The numbers 1–5 indicate the seg- ments of the Alaska Range discussed in the text. K406 SATELLITE IMAGE ATLAS OF GLACIERS OF THE WORLD and Field, 1975a, p. 575) and areas of greater than 500 km2. Alaska Range glaciers extend in elevation from above 6,000 m, near the summit of Mount McKinley, to slightly more than 100 m above sea level at Capps and Triumvi- rate Glaciers in the southwestern part of the range. -
Yukon River Nulato Hills Lime Hills Alaska Range Yukon River Lowlands Seward Peninsula Yukon-Kuskokwim Delta Ray Mountains Ahklu
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Chapter Four
Chapter Four South Denali Visitor Center Complex: Interpretive Master Plan Site Resources Tangible Natural Site Features 1. Granite outcroppings and erratic Resources are at the core of an boulders (glacial striations) interpretive experience. Tangible resources, those things that can be seen 2. Panoramic views of surrounding or touched, are important for connecting landscape visitors physically to a unique site. • Peaks of the Alaska Range Intangible resources, such as concepts, (include Denali/Mt. McKinley, values, and events, facilitate emotional Mt. Foraker, Mt. Hunter, Mt. and meaningful experiences for visitors. Huntington, Mt. Dickey, Moose’s Effective interpretation occurs when Erratic boulders on Curry Ridge. September, 2007 Tooth, Broken Tooth, Tokosha tangible resources are connected with Mountains) intangible meanings. • Peters Hills • Talkeetna Mountains The visitor center site on Curry Ridge maximizes access to resources that serve • Braided Chulitna River and valley as tangible connections to the natural and • Ruth Glacier cultural history of the region. • Curry Ridge The stunning views from the visitor center site reveal a plethora of tangible Mt. McKinley/Denali features that can be interpreted. This Mt. Foraker Mt. Hunter Moose’s Tooth shot from Google Earth shows some of the major ones. Tokosha Ruth Glacier Mountains Chulitna River Parks Highway Page 22 3. Diversity of habitats and uniquely 5. Unfettered views of the open sky adapted vegetation • Aurora Borealis/Northern Lights • Lake 1787 (alpine lake) • Storms, clouds, and other weather • Alpine Tundra (specially adapted patterns plants, stunted trees) • Sun halos and sun dogs • High Brush (scrub/shrub) • Spruce Forests • Numerous beaver ponds and streams Tangible Cultural Site Features • Sedge meadows and muskegs 1. -
Breasts on the West Buttress Climbing the Great One for a Great Cause
Breasts on the West Buttress Climbing the Great One for a great cause Nancy Calhoun, Sheldon Kerr, Libby Bushell A Ritt Kellogg Memorial Fund Proposal Calhoun, Kerr, Bushell; BOTWB 24 Table of Contents Mission Statement and Goals 3 Libby’s Application, med. form, agreement 4-8 Libby’s Resume 9-10 Nancy’s Application, med. form, agreement 11-15 Nancy’s Resume 16-17 Sheldon’s Application, med. form, agreement 18-23 Sheldon’s Resume 24-25 Ritt Kellogg Fund Agreement 26 WFR Card copies 27 Travel Itinerary 28 Climbing Itinerary 29-34 Risk Management 35-36 Minimum Impact techniques 37 Gear List 38-40 First Aid Contents 41 Food List 42-43 Maps 44 Final Budget 45 Appendix 46-47 Calhoun, Kerr, Bushell; BOTWB 24 Breasts on the West Buttress: Mission Statement It may have started with the simple desire to climb North America’s tallest peak, but with a craving to save the world a more pressing concern on the minds of three Colorado College women (a Vermonter, an NC southern gal, and a life-long Alaskan), we realized that climbing Denali could and should be only a mere stepping stone to the much greater task at hand. Thus, we’ve teamed up with the American Breast Cancer Foundation, an organization that is doing their part to save our world, one breast at a time, in order to do our part, in hopes of becoming role models and encouraging the rest of the world to do their part too. So here’s our plan: We are going to climb Denali (Mount McKinley) via the West Buttress route in June of 2006. -
Denali National Park and Preserve
National Park Service U.S. Department of the Interior Natural Resource Program Center Water Resources Stewardship Report Denali National Park and Preserve Natural Resource Technical Report NPS/NRPC/WRD/NRTR—2007/051 ON THE COVER Photograph: Toklat River, Denali National Park and Preserve (Guy Adema, 2007) Water Resources Stewardship Report Denali National Park and Preserve Natural Resource Technical Report NPS/NRPC/WRD/NRTR-2007/051 Kenneth F. Karle, P.E. Hydraulic Mapping and Modeling P.O. Box 181 Denali Park, Alaska 99755 September 2007 U.S. Department of the Interior National Park Service Natural Resources Program Center Fort Collins, Colorado The Natural Resource Publication series addresses natural resource topics that are of interest and applicability to a broad readership in the National Park Service and to others in the management of natural resources, including the scientific community, the public, and the NPS conservation and environmental constituencies. Manuscripts are peer- reviewed to ensure that the information is scientifically credible, technically accurate, appropriately written for the intended audience, and is designed and published in a professional manner. The Natural Resources Technical Reports series is used to disseminate the peer-reviewed results of scientific studies in the physical, biological, and social sciences for both the advancement of science and the achievement of the National Park Service’s mission. The reports provide contributors with a forum for displaying comprehensive data that are often deleted from journals because of page limitations. Current examples of such reports include the results of research that addresses natural resource management issues; natural resource inventory and monitoring activities; resource assessment reports; scientific literature reviews; and peer reviewed proceedings of technical workshops, conferences, or symposia. -
2018 Annual Mountaineering Summary
2018 Annual Mountaineering Summary NPS Photo (M. Coady) 2018 Statistical Year in Review Each season's !!!~~D.~~.iD.~.~- ~!~~ . !:.~':!.!~ . ~!~!!~!!~~ · including total attempts and total summits for Denali and Foraker, are now compiled into one spreadsheet spanning from 1979 to 2018. The P.~ .':1.~.1 ! ..l?.!~P.~!~~~~ blog can provide a more detailed perspective of the 2018 season, including daily statistics, weather, conditions reports, photos, and random climbing news. Thank you to the 31 !!!~~!:.'~.~.i.':1.~.~-~!~~t~.<?.1.':l. ~!~~~~ ~! .':1::~~~~! (VIP's) who teamed up with Denali rangers to staff the mountain camps in 2018. Read about the efforts of the 2018 recipients of the M.i.:;. 1.~~:~~~- ~~~~ - g-~D.~.l.i.. ~~~ Award. Quick Facts - Denali • Climbers from the USA: 694 (63% of total) Climbers hailed from 42 of the 50 states in 2018. Colorado was the most heavily represented with 114 climbers. Alaska followed close behind with 111 climbers. There were 87 climbers from Washington and 72 from California. • International climbers: 420 (37% of total) 51 foreign nations were represented on Denali in 2018. Of the international climbers, Poland generated the highest number of climbers with 47. Canada was next with 42. Australia was suprisingly well-represented on Denali this season, with 28 climbers. China and Japan each had 24 climbers on Denali. We had one climber each from Andorra, Kazakhstan, and Qatar. • Average trip length The average trip length on Denali was 17 days; independent teams averaged a day less (16 days), while guided teams averaged a day more (18 days). The average length of a Muldrow Glacier climb was 27 days. -
Highlights for Fiscal Year 2013: Denali National Park
Highlights for FY 2013 Denali National Park and Preserve (* indicates action items for A Call to Action or the park’s strategic plan) This year was one of changes and challenges, including from the weather. The changes started at the top, with the arrival of new Superintendent Don Striker in January 2013. He drove across the country to Alaska from New River Gorge National River in West Virginia, where he had been the superintendent for five years. He also served as superintendent of Mount Rushmore National Memorial (South Dakota) and Fort Clatsop National Memorial (Oregon) and as special assistant to the Comptroller of the National Park Service. Some of the challenges that will be on his plate – implementing the Vehicle Management Plan, re-bidding the main concession contract, and continuing to work on a variety of wildlife issues with the State of Alaska. Don meets Skeeter, one of the park’s sled dogs The park and its partners celebrated a significant milestone, the centennial of the first summit of Mt. McKinley, with several activities and events. On June 7, 1913, four men stood on the top of Mt. McKinley, or Denali as it was called by the native Koyukon Athabaskans, for the first time. By achieving the summit of the highest peak in North America, Walter Harper, Harry Karstens, Hudson Stuck, and Robert Tatum made history. Karstens would continue to have an association with the mountain and the land around it by becoming the first Superintendent of the fledgling Mt. McKinley National Park in 1921. *A speaker series featuring presentations by five Alaskan mountaineers and historians on significant Denali mountaineering expeditions, premiered on June 7thwith an illustrated talk on the 1913 Ascent of Mt. -
The Southern Alaska Range
.UNITED STATES DEPARTMENT OF THE INTERIOR Harold L. Ickes, Secretary GEOLOGICAL SURVEY W. C. Mendenhall, Director Bulletin 862 THE SOUTHERN ALASKA RANGE BY STEPHEN R. CAPPS UNITED STATES .GOVERNMENT PRINTING OFFICE WASHINGTON : 1935 'Forsale bythe Superintendent-,of Documents, Washington, D. 0. --------- Price 70 cents ' ' CONTENTS ' ' Page Abstract.________________________________________________________ 1 Introduction.. _ _______________ ____________________________________ 2 Previous explorations and surveys-_____--____-_____--________.______ 3 Present investigation______________________________________________ 9 Geography ____--________-_-_-_---__-__-.__.__.____._______.______ 15 Drainage ______-_-.____-_..____.___________._______________... 15 Glaciers.._---_-----.---------__------_---___-_-_-___---____-. 25 Relief..__-----_---.---------_-----------__----_-_-----__---_ 25 Climate--....--.---..--.-.---.------.---.-------------------- 27 Vegetation ___________________________________________________ 28 Wild animals..____.__.-__.___________.-_..._..______---______ 30 ... "Routes of travel.___-.------------.-_----._-_-_----_--_-_-_-_- 31 Population._________-_______...__._.__________'_______________ 34 Geology_____-..._----_.--.---------.-.-.-_---__.-_._--.-_--_-_. 35 General outline.__-___-_____._________...______ __-______._._._ 35 Paleozoic rocks._-_----- ----.----.----.-_--_--_..._.--_-_-__ 37 Gneiss, mica schist, and quartzite.------_-----___._-----____ 37 '. Crystalline limestone and calcareous schist.---____.___-_-_-__ 39 Paleozoic or early Mesozoic rocks. _______________________________ 42 Slate and chert..__________________________________________ 42 Mesozoic rocks._____-----------_-_-___-..-_---_-_---._----____ 44 Greenstones._-___-----_--___--____-_____--_.-__-___--____ 44 Upper Triassic limestone and chert.._______________.____._.. 45 Lower Jurassic (?) lava flows and tuffs____-----_______--.._-__ 47 Undiffere;ntiated Jurassic-and Cretaceous^sediments.___-__-_-- 51 Tertiary rocks.___-_-_-.-_. -
Alaska Park Science Anchorage, Alaska
National Park Service U.S. Department of Interior Alaska Regional Office Alaska Park Science Anchorage, Alaska PROCEEDINGS OF THE CentrCentralal AlaskAlaskaa PParkark SciencSciencee SymposiumSymposium SeptemberSeptember 12-14,12-14, 2006 2006 Denali Park, Alaska Volume 6, Issue 2 Parks featured in this Table of Contents issue of Alaska Park Science Keynote Address Alaska Parks in a Warming Climate: Conserving a Changing Future __________________________ 6 S K A Yukon-Charley Rivers Synthesis L A National Preserve Crossing Boundaries in Changing Environment: Norton Sound A A Synthesis __________________________________________12 Monitoring a Changing Climate Denali National Park and Preserve Long-term Air Quality Monitoring Wrangell-St. Elias in Denali National Park and Preserve __________________18 National Park and Preserve Monitoring Seasonal and Long-term Climate Changes and Extremes in the Central Alaska Network__________ 22 Physical Environment and Sciences Glacier Monitoring in Denali National Park and Preserve ________________________________________26 Applications of the Soil-Ecological Survey of Denali National Park and Preserve__________________31 Bristol Bay Gulf of Alaska Using Radiocarbon to Detect Change in Ecosystem Carbon Cycling in Response to Permafrost Thawing____34 A Baseline Study of Permafrost in the Toklat Basin, Denali National Park and Preserve ____________________37 Dinosauria and Fossil Aves Footprints from the Lower Cantwell Formation (latest Cretaceous), Denali National Park and Preserve ____________________41