Wrangell-St. Elias Alaska
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Extending the Late Holocene White River Ash Distribution, Northwestern Canada STEPHEN D
ARCTIC VOL. 54, NO. 2 (JUNE 2001) P. 157– 161 Extending the Late Holocene White River Ash Distribution, Northwestern Canada STEPHEN D. ROBINSON1 (Received 30 May 2000; accepted in revised form 25 September 2000) ABSTRACT. Peatlands are a particularly good medium for trapping and preserving tephra, as their surfaces are wet and well vegetated. The extent of tephra-depositing events can often be greatly expanded through the observation of ash in peatlands. This paper uses the presence of the White River tephra layer (1200 B.P.) in peatlands to extend the known distribution of this late Holocene tephra into the Mackenzie Valley, northwestern Canada. The ash has been noted almost to the western shore of Great Slave Lake, over 1300 km from the source in southeastern Alaska. This new distribution covers approximately 540000 km2 with a tephra volume of 27 km3. The short time span and constrained timing of volcanic ash deposition, combined with unique physical and chemical parameters, make tephra layers ideal for use as chronostratigraphic markers. Key words: chronostratigraphy, Mackenzie Valley, peatlands, White River ash RÉSUMÉ. Les tourbières constituent un milieu particulièrement approprié au piégeage et à la conservation de téphra, en raison de l’humidité et de l’abondance de végétation qui règnent en surface. L’observation des cendres contenues dans les tourbières permet souvent d’élargir notablement les limites spatiales connues des épisodes de dépôts de téphra. Cet article recourt à la présence de la couche de téphra de la rivière White (1200 BP) dans les tourbières pour agrandir la distribution connue de ce téphra datant de l’Holocène supérieur dans la vallée du Mackenzie, située dans le Nord-Ouest canadien. -
Crary-Henderson Collection, B1962.001
REFERENCE CODE: AkAMH REPOSITORY NAME: Anchorage Museum at Rasmuson Center Bob and Evangeline Atwood Alaska Resource Center 625 C Street Anchorage, AK99501 Phone: 907-929-9235 Fax: 907-929-9233 Email: [email protected] Guide prepared by: Mary Langdon, Volunteer, and Sara Piasecki, Archivist TITLE: Crary-Henderson Collection COLLECTION NUMBER: B1962.001, B1962.001A OVERVIEW OF THE COLLECTION Dates: circa 1885-1930 Extent: 19.25 linear feet Language and Scripts: The collection is in English. Name of creator(s): Will Crary; Nan Henderson; Phinney S. Hunt; Miles Bros.; Lyman; George C. Cantwell; Johnson; L. G. Robertson; Lillie N. Gordon; John E. Worden; W. A. Henderson; H. Schultz; Merl LaVoy; Guy F. Cameron; Eric A. Hegg Administrative/Biographical History: The Crary and Henderson Families lived and worked in the Valdez area during the boom times of the early 1900s. William Halbrook Crary was a prospector and newspaper man born in the 1870s (may be 1873 or 1876). William and his brother Carl N. Crary came to Valdez in 1898. Will was a member of the prospecting party of the Arctic Mining Company; Carl was the captain of the association. The Company staked the “California Placer Claim” on Slate Creek and worked outside of Valdez on the claim. Slate Creek is a tributary of the Chitina River, in the Chistochina District of the Copper River Basin. Will Crary was the first townsite trustee for Valdez. Carl later worked in the pharmaceutical field in Valdez and was also the postmaster. Will married schoolteacher Nan Fitch in Valdez in 1906. Carl died of cancer in 1927 in Portland, Oregon. -
CC O'harra Collection, Glass Lantern Slides and Glass Plate Negatives
SDSM&T Archives: C.C. O’Harra Collection, Glass Lantern Slides and Glass Plate Negatives SDSM&T Archives Devereaux Library South Dakota School of Mines & Technology Rapid City, SD 5/25/2016 SDSM&T Archives: C.C. O’Harra Collection, Glass Lantern Slides and Glass Plate Negatives page 1 Title C.C. O’Harra Collection: Glass Lantern Slides and Glass Plate Negatives Extent 1509 items: 1227 glass lantern slides, 282 glass plate negatives; 1358 unique images Scope and Content The C.C. O’Harra Collection consists of papers, publications, photographs, maps, and files of South Dakota School of Mines president and professor Cleophus Cisney O’Harra. The Devereaux Library’s glass lantern, sometimes referred to as magic lantern, collection consists of over 1200—3 ¼“ x 4” numbered slides and vary in subject matter from geology to meteorology to campus history and include photographs, drawings and maps of international, regional and historical interest. The glass plate negatives consist of 282 plates. The plates are of two size formats—4” x 5” and 5” x 7”, and have an unprotected photo emulsion on the back side. The purpose of the items was primarily instructional. They were produced either from a stationary camera, as shown in the photo or “on site” from a more portable unit. Glass plates were the first step in the reproduction process and, as is evidenced by the notations in the margins of many of the originals, were later submitted to a commercial photo processor to be made into glass slides Provenance The glass lantern slides and glass plate negatives have been a part of the university‘s holdings for several decades. -
Los Cien Montes Más Prominentes Del Planeta D
LOS CIEN MONTES MÁS PROMINENTES DEL PLANETA D. Metzler, E. Jurgalski, J. de Ferranti, A. Maizlish Nº Nombre Alt. Prom. Situación Lat. Long. Collado de referencia Alt. Lat. Long. 1 MOUNT EVEREST 8848 8848 Nepal/Tibet (China) 27°59'18" 86°55'27" 0 2 ACONCAGUA 6962 6962 Argentina -32°39'12" -70°00'39" 0 3 DENALI / MOUNT McKINLEY 6194 6144 Alaska (USA) 63°04'12" -151°00'15" SSW of Rivas (Nicaragua) 50 11°23'03" -85°51'11" 4 KILIMANJARO (KIBO) 5895 5885 Tanzania -3°04'33" 37°21'06" near Suez Canal 10 30°33'21" 32°07'04" 5 COLON/BOLIVAR * 5775 5584 Colombia 10°50'21" -73°41'09" local 191 10°43'51" -72°57'37" 6 MOUNT LOGAN 5959 5250 Yukon (Canada) 60°34'00" -140°24’14“ Mentasta Pass 709 62°55'19" -143°40’08“ 7 PICO DE ORIZABA / CITLALTÉPETL 5636 4922 Mexico 19°01'48" -97°16'15" Champagne Pass 714 60°47'26" -136°25'15" 8 VINSON MASSIF 4892 4892 Antarctica -78°31’32“ -85°37’02“ 0 New Guinea (Indonesia, Irian 9 PUNCAK JAYA / CARSTENSZ PYRAMID 4884 4884 -4°03'48" 137°11'09" 0 Jaya) 10 EL'BRUS 5642 4741 Russia 43°21'12" 42°26'21" West Pakistan 901 26°33'39" 63°39'17" 11 MONT BLANC 4808 4695 France 45°49'57" 06°51'52" near Ozero Kubenskoye 113 60°42'12" c.37°07'46" 12 DAMAVAND 5610 4667 Iran 35°57'18" 52°06'36" South of Kaukasus 943 42°01'27" 43°29'54" 13 KLYUCHEVSKAYA 4750 4649 Kamchatka (Russia) 56°03'15" 160°38'27" 101 60°23'27" 163°53'09" 14 NANGA PARBAT 8125 4608 Pakistan 35°14'21" 74°35'27" Zoji La 3517 34°16'39" 75°28'16" 15 MAUNA KEA 4205 4205 Hawaii (USA) 19°49'14" -155°28’05“ 0 16 JENGISH CHOKUSU 7435 4144 Kyrghysztan/China 42°02'15" 80°07'30" -
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. -
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. -
Marine Tephrochronology of the Mt
Quaternary Research 73 (2010) 277–292 Contents lists available at ScienceDirect Quaternary Research journal homepage: www.elsevier.com/locate/yqres Marine tephrochronology of the Mt. Edgecumbe Volcanic Field, Southeast Alaska, USA Jason A. Addison a,b,⁎, James E. Beget a,b, Thomas A. Ager c, Bruce P. Finney d a Alaska Quaternary Center and Department of Geology and Geophysics, University of Alaska Fairbanks, 900 Yukon Drive, PO Box 755780, Fairbanks, AK 99775-5780, USA b Alaska Quaternary Center, PO Box 755940, University of Alaska Fairbanks, Fairbanks, AK 99775-5940, USA c U.S. Geological Survey, Mail Stop 980, Box 25045, Denver Federal Center, Denver, CO 80225, USA d Department of Biological Sciences, Idaho State University, Pocatello, ID 83209-8007, USA article info abstract Article history: The Mt. Edgecumbe Volcanic Field (MEVF), located on Kruzof Island near Sitka Sound in southeast Alaska, Received 30 March 2009 experienced a large multiple-stage eruption during the last glacial maximum (LGM)–Holocene transition Available online 11 December 2009 that generated a regionally extensive series of compositionally similar rhyolite tephra horizons and a single well-dated dacite (MEd) tephra. Marine sediment cores collected from adjacent basins to the MEVF contain Keywords: both tephra-fall and pyroclastic flow deposits that consist primarily of rhyolitic tephra and a minor dacitic Tephra tephra unit. The recovered dacite tephra correlates with the MEd tephra, whereas many of the rhyolitic Alaska North Pacific Ocean tephras correlate with published MEVF rhyolites. Correlations were based on age constraints and major Cryptotephra oxide compositions of glass shards. In addition to LGM–Holocene macroscopic tephra units, four marine Mt. -
North American Notes
268 NORTH AMERICAN NOTES NORTH AMERICAN NOTES BY KENNETH A. HENDERSON HE year I 967 marked the Centennial celebration of the purchase of Alaska from Russia by the United States and the Centenary of the Articles of Confederation which formed the Canadian provinces into the Dominion of Canada. Thus both Alaska and Canada were in a mood to celebrate, and a part of this celebration was expressed · in an extremely active climbing season both in Alaska and the Yukon, where some of the highest mountains on the continent are located. While much of the officially sponsored mountaineering activity was concentrated in the border mountains between Alaska and the Yukon, there was intense activity all over Alaska as well. More information is now available on the first winter ascent of Mount McKinley mentioned in A.J. 72. 329. The team of eight was inter national in scope, a Frenchman, Swiss, German, Japanese, and New Zealander, the rest Americans. The successful group of three reached the summit on February 28 in typical Alaskan weather, -62° F. and winds of 35-40 knots. On their return they were stormbound at Denali Pass camp, I7,3oo ft. for seven days. For the forty days they were on the mountain temperatures averaged -35° to -40° F. (A.A.J. I6. 2I.) One of the most important attacks on McKinley in the summer of I967 was probably the three-pronged assault on the South face by the three parties under the general direction of Boyd Everett (A.A.J. I6. IO). The fourteen men flew in to the South east fork of the Kahiltna glacier on June 22 and split into three groups for the climbs. -
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. -
Resedimentation of the Late Holocene White River Tephra, Yukon Territory and Alaska
Resedimentation of the late Holocene White River tephra, Yukon Territory and Alaska K.D. West1 and J.A. Donaldson2 Carleton University3 West, K.D. and Donaldson, J.A. 2002. Resedimentation of the late Holocene White River tephra, Yukon Territory and Alaska. In: Yukon Exploration and Geology 2002, D.S. Emond, L.H. Weston and L.L. Lewis (eds.), Exploration and Geological Services Division, Yukon Region, Indian and Northern Affairs Canada, p. 239-247. ABSTRACT The Wrangell region of eastern Alaska represents a zone of extensive volcanism marked by intermittent pyroclastic activity during the late Holocene. The most recent and widely dispersed pyroclastic deposit in this area is the White River tephra, a distinct tephra-fall deposit covering 540 000 km2 in Alaska, Yukon, and the Northwest Territories. This deposit is the product of two Plinian eruptions from Mount Churchill, preserved in two distinct lobes, created ca. 1887 years B.P. (northern lobe) and 1147 years B.P. (eastern lobe). The tephra consists of distal primary air-fall deposits and proximal, locally resedimented volcaniclastic deposits. Distinctive layers such as the White River tephra provide important chronostratigraphic control and can be used to interpret the cultural and environmental impact of ancient large magnitude eruptions. The resedimentation of White River tephra has resulted in large-scale terraces, which fl ank the margins of Klutlan Glacier. Preliminary analysis of resedimented deposits demonstrates that the volcanic stratigraphy within individual terraces is complex and unique. RÉSUMÉ Au cours de l’Holocène tardif, des matériaux pyroclastiques ont été projetés lors d’importantes et nombreuses éruptions volcaniques, dans la région de Wrangell de l’est de l’Alaska. -
P1616 Text-Only PDF File
A Geologic Guide to Wrangell–Saint Elias National Park and Preserve, Alaska A Tectonic Collage of Northbound Terranes By Gary R. Winkler1 With contributions by Edward M. MacKevett, Jr.,2 George Plafker,3 Donald H. Richter,4 Danny S. Rosenkrans,5 and Henry R. Schmoll1 Introduction region—his explorations of Malaspina Glacier and Mt. St. Elias—characterized the vast mountains and glaciers whose realms he invaded with a sense of astonishment. His descrip Wrangell–Saint Elias National Park and Preserve (fig. tions are filled with superlatives. In the ensuing 100+ years, 6), the largest unit in the U.S. National Park System, earth scientists have learned much more about the geologic encompasses nearly 13.2 million acres of geological won evolution of the parklands, but the possibility of astonishment derments. Furthermore, its geologic makeup is shared with still is with us as we unravel the results of continuing tectonic contiguous Tetlin National Wildlife Refuge in Alaska, Kluane processes along the south-central Alaska continental margin. National Park and Game Sanctuary in the Yukon Territory, the Russell’s superlatives are justified: Wrangell–Saint Elias Alsek-Tatshenshini Provincial Park in British Columbia, the is, indeed, an awesome collage of geologic terranes. Most Cordova district of Chugach National Forest and the Yakutat wonderful has been the continuing discovery that the disparate district of Tongass National Forest, and Glacier Bay National terranes are, like us, invaders of a sort with unique trajectories Park and Preserve at the north end of Alaska’s panhan and timelines marking their northward journeys to arrive in dle—shared landscapes of awesome dimensions and classic today’s parklands.