October 2006 Scree
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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. -
Annual Climate Monitoring Report for Denali National Park and Preserve, Wrangell-St-Elias National Park and Preserve and Yukon-Charley Rivers National Preserve
Annual Climate Monitoring Report for Denali National Park and Preserve, Wrangell-St-Elias National Park and Preserve and Yukon-Charley Rivers National Preserve Pamela J. Sousanes Denali National Park and Preserve P.O. Box 9 Denali Park, AK 99755 2005 Central Alaska Network NPS Report Series Number: NPS/AKCAKN/NRTR-2006/0xx Project Number: CAKN-xxxxxx Funding Source: Central Alaska Network Denali National Park and Preserve Draft 2005 Annual Climate Monitoring Report – March 2006 Central Alaska Inventory and Monitoring Network File Name: Sousanes_P_2006_ClimateMonitoringCAKN_0315.doc Recommended Citation: Sousanes, Pamela J. 2006. Annual Climate Monitoring Report for Denali National Park and Preserve, Wrangell-St. Elias National Park and Preserve, and Yukon- Charley Rivers National Preserve. NPS/AKCAKN/NRTR-2006/xx. National Park Service. Denali Park, AK. 75 pg. Acronyms: I&M Inventory and Monitoring CAKN Central Alaska Network DENA Denali National Park and Preserve WRST Wrangell-St. Elias National Park and Preserve YUCH Yukon-Charley Rivers National Preserve NPS National Park Service WRCC Western Regional Climate Center NRCS Natural Resources Conservation Service NWS National Weather Service RAWS Remote Automated Weather Station NCDC National Climatic Data Center AWOS Automated Weather Observation Station SNOTEL Snow Telemetry ii Draft 2005 Annual Climate Monitoring Report – March 2006 Central Alaska Inventory and Monitoring Network Table of Contents EXECUTIVE SUMMARY............................................................................................. -
Changes in Geyser Eruption Behavior and Remotely Triggered Seismicity in Yellowstone National Park Produced by the 2002 M 7.9 Denali Fault Earthquake, Alaska
Changes in geyser eruption behavior and remotely triggered seismicity in Yellowstone National Park produced by the 2002 M 7.9 Denali fault earthquake, Alaska S. Husen* Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112, USA R. Taylor National Park Service, Yellowstone Center for Resources, Yellowstone National Park, Wyoming 82190, USA R.B. Smith Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112, USA H. Healser National Park Service, Yellowstone Center for Resources, Yellowstone National Park, Wyoming 82190, USA ABSTRACT STUDY AREA Following the 2002 M 7.9 Denali fault earthquake, clear changes in geyser activity and The Yellowstone volcanic field, Wyoming, a series of local earthquake swarms were observed in the Yellowstone National Park area, centered in Yellowstone National Park (here- despite the large distance of 3100 km from the epicenter. Several geysers altered their after called ‘‘Yellowstone’’), is one of the larg- eruption frequency within hours after the arrival of large-amplitude surface waves from est silicic volcanic systems in the world the Denali fault earthquake. In addition, earthquake swarms occurred close to major (Christiansen, 2001; Smith and Siegel, 2000). geyser basins. These swarms were unusual compared to past seismicity in that they oc- Three major caldera-forming eruptions oc- curred simultaneously at different geyser basins. We interpret these observations as being curred within the past 2 m.y., the most recent induced by dynamic stresses associated with the arrival of large-amplitude surface waves. 0.6 m.y. ago. The current Yellowstone caldera We suggest that in a hydrothermal system dynamic stresses can locally alter permeability spans 75 km by 45 km (Fig. -
Mount Sanford…Errrr, Mount Jarvis. Wait, What?? Mount Who?? It Was Roughly Around Thanksgiving 2016 and the Time Had Come Fo
Mount Sanford…errrr, Mount Jarvis. Wait, what?? Mount Who?? It was roughly around Thanksgiving 2016 and the time had come for me to book my next IMG adventure. With two young children at home and no family close by, I had settled into a routine of doing a big climb every other year. This year was a bit different, as I normally book my major climbs around September for an April or May departure the following year. However, due to a Mt. Blackburn (Alaska) trip falling through, I had to book another expedition. In 2015, I was on an IMG team that summitted Mt. Bona from the north side, not the original plan (jot that down – this will become a theme in Alaska), and really enjoyed the solitude, adventure, physical challenge, small team, and lack of schedule the Wrangell & St Elias Mountains had to offer. So, I hopped on IMG’s website, checked out the scheduled Alaskan climb for 2017, which was Mt. Sanford, and peppered George with my typical questions. Everything lined up, so I completed the pile of paperwork (do I really have to sign another waiver?!?), sent in my deposit (still no AMEX, ugh…), set my training schedule, and started Googling trip reports about Mt. Sanford. Little did I know that READING about Mt. Sanford was the closest I would ever get to it! Pulling from my previous Alaskan climbing experience, I was better prepared for this trip than for Mt Bona in 2015. Due to our bush pilot’s inability to safely land us on the south side of Bona two years prior, we flew up, around, and over the mountain and landed on the north side. -
Bozeman Climbers Tackle Gan
BOZEMAN CLIMBERS TACKLE GANNETT PEAK TO BENEFIT U... http://chronicleoutdoors.com/2010/03/18/bozeman-climbers-to-tackle-w... Chronicle Outdoors Dedicated to outdoor adventure in Southwest Montana Home Photo Gallery Where Am I Contest About Contact .: This week's poll :. Fifteen years ago wolves were released into Yellowstone Park. They have since established range outside the park and been embroiled in controversy. Do you think their presence is appropriate? Yes, wolves are a native predator that help maintain a natural balance in the Greater Yellowstone Ecosystem. No way, wolves have depleted elk herds, killed sheep and cattle and caused conflict. They create more problems than they solve. Vote View Results .: Gallatin ational Forest Avalanche Report :. GNFAC Avalanche Advisory for Sun Mar 21, 2010 Good Morning. This is Eric Knoff with the Gallatin National Forest Avalanche Advisory issued on Sunday, March 21, at 7:30 a.m. Bountiful Table, in cooperation with the Friends of the Avalanche Center, sponsors today's advisory. This advisory does not apply to operating ski areas. Mountain Weather: A ridge of high pressure has stalled over southwest M […] .: Latest news from Montana Fish, Wildlife & Parks :. Wild Bison’s Future In Montana What is the future for wild bison in Montana? […] Three Bear Aware Meetings Planned For Front State wildlife officials are planning three community meetings in April to remind north central Montana residents to be bear aware. The meetings will begin at 7 p.m. and take place April 12, Simms high school; April 13, Marias River Electric Coop in Shelby; and April 14, Wolf Creek School. -
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. -
Denali Name Change
THE SECRETARY OF THE INTERIOR WASHINGTON ORDER NO. 3337 Subject: Change of the Name of Mount McKinley to Denali Sec. 1 Purpose. The purpose of this Order is to change the name of Mount McKinley to Denali. Sec. 2 Background. On March 11, 1975, Governor Jay S. Hammond of the State of Alaska, in furtherance of a resolution passed by the Alaska State Legislature, formally requested that the Secretary of the Interior direct the United States Board on Geographic Names (Board) to change the name of "Mount McKinley" to "Denali." Denali is a local Athabascan name for the mountain, which is the highest in North America and is located entirely within Denali National Park and Preserve, Alaska. The mountain was originally named after President William McKinley of Ohio, but President McKinley never visited, nor did he have any significant historical connection to, the mountain or to Alaska. The requested name change is consistent with the Board's substantive policies and is supported by the State of Alaska. While the Board does have a policy of deferring action when a matter is being considered by Congress, contradictory bills on this issue have been proposed by various members of Congress since the late 1970s. Under 43 U.S.C. §§ 364-364f, the Secretary of the Interior may take action in matters "wherein the Board does not act within a reasonable time." The statute also directs the Secretary to "promulgate in the name of the Board ... decisions with respect to geographic names and principles of geographic nomenclature and orthography." Sec. 3 Authority. The authority for this Order is 43 U.S.C. -
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. -
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. -
Mesofauna at the Soil-Scree Interface in a Deep Karst Environment
diversity Article Mesofauna at the Soil-Scree Interface in a Deep Karst Environment Nikola Jureková 1,* , Natália Raschmanová 1 , Dana Miklisová 2 and L’ubomír Kováˇc 1 1 Department of Zoology, Institute of Biology and Ecology, Faculty of Science, Pavol Jozef Šafárik University in Košice, Šrobárova 2, SK-04180 Košice, Slovakia; [email protected] (N.R.); [email protected] (L’.K.) 2 Institute of Parasitology, Slovak Academy of Sciences, Hlinkova 3, SK-04001 Košice, Slovakia; [email protected] * Correspondence: [email protected] Abstract: The community patterns of Collembola (Hexapoda) were studied at two sites along a microclimatically inversed scree slope in a deep karst valley in the Western Carpathians, Slovakia, in warm and cold periods of the year, respectively. Significantly lower average temperatures in the scree profile were noted at the gorge bottom in both periods, meaning that the site in the lower part of the scree, near the bank of creek, was considerably colder and wetter compared to the warmer and drier site at upper part of the scree slope. Relatively high diversity of Collembola was observed at two fieldwork scree sites, where cold-adapted species, considered climatic relicts, showed considerable abundance. The gorge bottom, with a cold and wet microclimate and high carbon content even in the deeper MSS horizons, provided suitable environmental conditions for numerous psychrophilic and subterranean species. Ecological groups such as trogloxenes and subtroglophiles showed decreasing trends of abundance with depth, in contrast to eutroglophiles and a troglobiont showing an opposite distributional pattern at scree sites in both periods. Our study documented that in terms of soil and Citation: Jureková, N.; subterranean mesofauna, colluvial screes of deep karst gorges represent (1) a transition zone between Raschmanová, N.; Miklisová, D.; the surface and the deep subterranean environment, and (2) important climate change refugia. -
Landslides and the Weathering of Granitic Rocks
Geological Society of America Reviews in Engineering Geology, Volume III © 1977 7 Landslides and the weathering of granitic rocks PHILIP B. DURGIN Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture, Berkeley, California 94701 (stationed at Arcata, California 95521) ABSTRACT decomposition, so they commonly occur as mountainous ero- sional remnants. Nevertheless, granitoids undergo progressive Granitic batholiths around the Pacific Ocean basin provide physical, chemical, and biological weathering that weakens examples of landslide types that characterize progressive stages the rock and prepares it for mass movement. Rainstorms and of weathering. The stages include (1) fresh rock, (2) core- earthquakes then trigger slides at susceptible sites. stones, (3) decomposed granitoid, and (4) saprolite. Fresh The minerals of granitic rock weather according to this granitoid is subject to rockfalls, rockslides, and block glides. sequence: plagioclase feldspar, biotite, potassium feldspar, They are all controlled by factors related to jointing. Smooth muscovite, and quartz. Biotite is a particularly active agent in surfaces of sheeted fresh granite encourage debris avalanches the weathering process of granite. It expands to form hydro- or debris slides in the overlying material. The corestone phase biotite that helps disintegrate the rock into grus (Wahrhaftig, is characterized by unweathered granitic blocks or boulders 1965; Isherwood and Street, 1976). The feldspars break down within decomposed rock. Hazards at this stage are rockfall by hyrolysis and hydration into clays and colloids, which may avalanches and rolling rocks. Decomposed granitoid is rock migrate from the rock. Muscovite and quartz grains weather that has undergone granular disintegration. Its characteristic slowly and usually form the skeleton of saprolite. -
Maternal Defensive Behavior of Mountain Goats Against Predation by Golden Eagles
Western North American Naturalist Volume 69 Number 1 Article 13 4-24-2009 Maternal defensive behavior of mountain goats against predation by Golden Eagles Sandra Hamel Université Laval, Québec, Canada, [email protected] Steeve D. Côté Université Laval, Québec, Canada, [email protected] Follow this and additional works at: https://scholarsarchive.byu.edu/wnan Recommended Citation Hamel, Sandra and Côté, Steeve D. (2009) "Maternal defensive behavior of mountain goats against predation by Golden Eagles," Western North American Naturalist: Vol. 69 : No. 1 , Article 13. Available at: https://scholarsarchive.byu.edu/wnan/vol69/iss1/13 This Note is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Western North American Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. Western North American Naturalist 69(1), © 2009, pp. 115–118 MATERNAL DEFENSIVE BEHAVIOR OF MOUNTAIN GOATS AGAINST PREDATION BY GOLDEN EAGLES Sandra Hamel1,2 and Steeve D. Côté1 ABSTRACT.—Maternal defensive behavior against predators may appear risky but is common in many species. Herein we describe maternal defensive behavior of mountain goats (Oreamnos americanus) against Golden Eagle (Aquila chrysaetos) predatory attempts. We found that Golden Eagles attacked goats in 1.9% of sightings (n = 311 sightings of active Golden Eagles over 12 years) but were never successful. Mothers always defended their young against Golden Eagle attacks. Predation by Golden Eagles on young-of-the-year appears low for most ungulate species, including mountain goats.