DOCSLIB.ORG

Notice Concerning Copyright Restrictions

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

NOTICE CONCERNING COPYRIGHT RESTRICTIONS This document may contain copyrighted materials. These materials have been made available for use in research, teaching, and private study, but may not be used for any commercial purpose. Users may not otherwise copy, reproduce, retransmit, distribute, publish, commercially exploit or otherwise transfer any material. The copyright law of the United States (Title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted material. Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction. One of these specific conditions is that the photocopy or reproduction is not to be "used for any purpose other than private study, scholarship, or research." If a user makes a request for, or later uses, a photocopy or reproduction for purposes in excess of "fair use," that user may be liable for copyright infringement. This institution reserves the right to refuse to accept a copying order if, in its judgment, fulfillment of the order would involve violation of copyright law. 1 g 6 •19 GEOLOGICAL SURVEY RESEARCH 1968 QUARTZ DIORITE-QUARTZ MONZONITE AND GRANITE PLUTONS OF THE PASAYTEN RIVER AREA, WASHINGTON- PETROLOGY, AGE, AND EMPLACEMENT By R. W. TABOR, J. C. ENGELS; and M. H. STAATZ, Menlo Park, Calif.; Denver, Colo. ibstract.-Quartz diorite to granite plutons intrude Lower of plutonic igneous and metamorphic rocks. On the Cretaceous sedimentary and volcanic rocks lying between two blocks of metamorphic and granitoid rocks. As indicated by west is the core of the North Cascade crystalline block, K-Ar dates, the large Pasayten and Rock Creek dikes were and on the east is the Okanogan Highlands crystalline emplaced about 86 m.y. ago (based on dating of biotite and block (fig. 1). The Mesozoic strata, include andesitic hornblende). The Castle Peak stock was emplaced about 49.5 m.y. ago (biotite and hornblende), and the Monument Park pyroclastic rocks and ininor flows (member A of the stock about 48 m.y. ago (biotite). A concentration of rhyolitic dikes between the granite Monument Peak stock and the granitic Golden Horn batholith of the same age suggests that the stock 121°00' CANADA is a satellite of the batholith. The stock domed up the beds of f &,ri• · •·•,S•I»;• •Area of WASHINGTON the country rock and deflected regional fold axes. The Pasayten 1 and Rock Creek dikes parallel trends of concordant plutons in , - '211 11. .1 111 1 1 1%,1,12 .1 HIGHLANDSOKANOGAN the metamorphic block to the southwest, suggesting that the £6 \:::.:t ...t..... CRYSTALLINEBLOCK [likes may be the shallow extensions of a concordant pluton in 48°45' NORTH 0 metamorphic rocks beneath the sedimentary terrane. CASCADECORE ···· 0\· · ·XPA· ··· kcl· .. 0 CRYSTAILINE /r+ I'\'e..':Vi.'··: · 'k•/Goot'7 Pe"k BLOCK llc,·•\w·······.4lilI\·· Geologists working in the Pasayten River area, of lillI,·3 +''I:•+.-•'•¥':8· · · •»I · · northern Washington have found the geologic history ,--. 't-'r/)74.J ++++./·······»GOLDEN HORN · dimcult to interpret for many years. Early workers in- ..x9731 : . :BATH94'It' : . cluding Russell (1900), Daly (1912), and Smith and • fLACKJ'EAK-»''i•w : BATHOLITH ••\•--•• .•11•1.••. Calkins (1904) briefly described the Mesozoic sedimen- 13/ <, tary and volcanic rocks and noted the presence of in- TAN trusive plutons. J. D. Barksdale and geologists with the f»,-12./ •»$1Area of • • • Washington State Department of Conservation first A-'rlei3 eGEJ mapthis mapped the granitic rocks of the area, and showed their Glacier•-•13pea•,1•-7'/9>1 WASHINGTON work in simplified form on the Washington State geo- «........ logic map (Huntting and others, 1961). The present report stems from reconnaissance map- 0 10 20 MILES ping by the U.S. Geological Survey in 1965 and 1966 as part of a mineral evaluation of the North Cascade FIGUREreport.1.-SketchRandom mapdashesshowingUpper'theCretaceousgeologic settingand Tertiaryof this Primitive Area, under the directive of the 1964 Wilder- quartz diorite to quartz monzonite intrusions; crosses, granite intrusions; dots, Mesozoic volcanic and sedimentary ness Act. Potassium-argon ages were determined by rocks (including minor Tertiary rocks) ; and blank areas, Joan C. Engels. predominently gneiss, sehist, and granitoid plutons. Heavy lines are faults, and letters show relative up or down move- GEOLOGIC SETTING ment of rocks. Data are from J. D. Barksdale, Peter Misch, The plutons described in this paper were emplaced fiedand othersin thecompiledGlaeier Peakby Hunttingarea accordingand othersto (1961)Crowder; modi-and iii Mesozoic sedimentary and volcanic rocks exposed in others (1966), west of the area of figure 2 according to a northwest-trendingblock that lies between two blocks Mischto Libby(1966b(1964),) andandGrantnortheast(1966of). Glacier Peak according U.S. GEOL. SURVEY PROF. PAPER 600-C, PAGES C45-C52 C45 046 MINERALOGY AND PETROLOGY. Pasayten Series of Daly, 1912, p. 481 ) along the east- nite is of intermediate composition ( CI=7-11). The ern initrgin of the central block, separated from the most silicic of the group is the Monument Peak stock of Okanogan I-Iigliltillds by a large fault. The volcanic graiiite ( CI = 2-4). rocks are overlain by tlie Pasayten Formation ( Smith Iii additioii to tliese large bodies tliere are numerous nrid Cal kins, 1904, p. 28-30 ), 11 thick sequence of inter- porphyritic aphanitic dikes. Hornblende-plagioclase bedded feldspathic to volcanic sandstone, black argillite, porpliyry dikes, mostly of dacitic composition, are par- and 11 few congloinerate beds ( members B to K of the ticularly abundant throughout the area. Sonic of these Pasayten Series of Daly, 1912, p. 481 ). Folds in the may be related to the quartz diorite-quartz inonzonite 3Iesozoic rocks are steel) ] imbed, subparallel, and trend plutons, but none were found connected to them. In nortliwest. Along tlie western margin of the sedimen- the Many Trails Peak area, biotite dacite dikes are tary block, iii fault contact witli tlie sandstone and argil- particularly abundant. lite, are greeiistone and cliert of probable Paleozoic age Quartz porphyry dikes of rhyodacitic to rhyolitic ( I-Iozonieen Series of Daly, 1912, p. 508 ). This unit com- composition are ·also abundant, and, since some of these poses the upper plate of tlie Jack Mountain thrust of stem from the Monument Peak stock, tliey will be dis- Miscli ( 1966b, p. 133-134). The Jack Mountain thrust cussed witll the stock. plate is iii part bordered 011 tlie west by the Ross Lake The ages of the plutons as based on field relations fault zone ( Misch, 1966b, p. 133-134)-a zone analogous and K-Ar analysis are, from oldest to youngest: to tlie fazilt separatiiig tlie eeiitral block from the crys- Pasayten dike and Rock Creek dike tal]ine Okanogan I-Iiglilands block on the east. How- Lost Peak stock ( age relative to tlie Pas:tyten and ever, the Ross Ltike fault zone lias been intruded by Rock Creek dikes zinknown) elongate plutons. To tlie soutli, tlie B] ack Peak batho- Monument Peak stock and Castle Peak stock. lit.li ( Adams, 1964; Miscli, 1966b, p. 134 ) has come up Pasayten dike and Rock Creek dike 111011% tliis sallie zoiie. In tlie sozithern part of the area The Pasayten dike has an avera (re widtli of 1 mile ( fig. 2 ) near Robiipson Afountain, Cretaceous red beds and a probable length of 1216 miles: The lithologically ( saiidstoiie, sliale, and conglomerate ), wliicli interfinger similar Rock Creek dike to the nortli-northwest is about witli over]ying massive :indesite breccia, are exposed in 036 016 miles long and lies along tlie saine trend as the 11783jor folds. Tliis is tlie Midniglit Peak Formation of Barksdale ( 1948, p. 173-174 ). Pasayten dike. The two dikes are the same age ( table 1 ) and may be connected at deptli. We did ilot deteriniize the exact stratigraphic se- The contacts of tlie Pasayten dike and Rock Creek quence or age of all the sedimentary rocks in the central dike are sliai·p, and near tliein the country rocks have block. Several fossil collectioiis, however, from the been tliermally inetamorphosed, commonly to ]iornfels satidstone-argillite sequence near Hurts Pass ( south of spotted with glomeroblastic biotite. Locally hornfelsed Slate Peak) indicate that the rocks are Early Creta- beds contain cordierite, andalusite, or garnet. Most rocks ceous in age ( D. L. Jones, written commun. 1965 ). Fos- at tlie contact are in the hornblende liornfels facies. A sils collected from similar rocks to tlie south have also few contacts along the Pasayten dike show coinplex been reported ( Barksdale, 1960, p. 2049 ) to be Early penetratioii of magma into ]iost rocks. For example, Cretaceous. Collections from a different part of this se- quence iii Canada ( Rice, 1947, p. 19 and 23; Coates, tlie nortliern border of the dike south of Wildcat Moun- tain is a migmatite consisting of narrow dikes and il·reg- 1966, p. 55 ) have been dated as Late Jurassic to Early ular masses of quartz diorite and pegmatite injected iiito Cretaceous. a hornfels spotted witll porphyroblasts of feldspar. DESCRIPTION OF THE INTRUSIVE ROCKS Along the southern margin of the Pastlyten dike in Eureka Creek the wallrocks are crisscrossed witli quartz The plutons of the Pasayten River area ( fig. 2 ) are diorite dikes and tlie pluton contains swarnis of hornfels of tliree principal types: quartz diorite to granodiorite, xeiioliths. Xeiiolitlis are abundant iii the Rock Creek granodiorite to quartz monzonite, and granite ( fig. 3 ). dike aloiig tlie western contact on the edge soutli of Rock The most mafia are the large nortliwest-trending Pasay- Creek. Such features would suggest :issimilation of ten dike ( extending from tlie Lost River to Pasayten tlle country rock in these areas; iii otlier areas, however, Peak) and Rock Creek dike (extending from the West as along the northeastern border of the Pasayten dike Fork of tlie Pasayten River to Chucliuwaiiteeii Creek ), iiortlieast of Robinson Mountain, the contact is sharp small pods and dikes of quartz-diorite to granodiorite aild the country rocks are overturned.
Recommended publications
  • Golden Horn, East Face

    Golden Horn, East Face

    AAC Publications Golden Horn, East Face Washington, North Cascades On a Friday evening in June, Jason Schilling and I hiked in to explore the unclimbed east face of Golden Horn (8,366’), just north of Washington Pass on the eastern slope of the North Cascades. Fred Beckey and company made the first ascent of Golden Horn via the Southwest Route in 1946, then returned in 1958 to ascend the north face. Around the corner, Gordy Skoog and Jim Walseth climbed the Northeast Arête (III 5.8) in 1979. Gordy and his brothers, Carl and Lowell, returned with a film crew a year later to create an episode for KOMO-TV’s Exploration Northwest, called “The Goldenhorn Pinnacle.” Despite this colorful history, the peak’s 1,000’ east face had never seen an ascent, in part because it was rumored to be chossy. Eight years ago, I scrambled the Southwest Route with my wife, Arun, to sneak a peek for myself. Jason and I approached up Swamp Creek to reach Snowy Lakes, a popular camp spot off the Pacific Crest Trail. The next day we scrambled up the ridge and dropped east via a snow couloir, a straightforward descent with crampons and axe. We hit our stride en route, and I enjoyed leading the route’s technical 5.10+ third pitch, the crux, on good rock. The heat of the day hit us as Jason led the fourth pitch, which quickly turned into the day’s true crux, an expanding crack with poor protection and disintegrating holds (5.10 R). We rationed our remaining water and navigated up intermittent cracks (5.8–5.10).
  • Late Orogenic Mafic Magmatism in the North Cascades, Washington

    Late Orogenic Mafic Magmatism in the North Cascades, Washington

    Late orogenic mafic magmatism in the North Cascades, Washington: Petrology and tectonic setting of the Skymo layered intrusion Donna L. Whitney1,, Jeffrey H. Tepper2, Marc M. Hirschmann3 and Hugh A. Hurlow4 1 Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA 2 Department of Geology, University of Puget Sound, Tacoma, Washington 98416, USA 3 Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA 4 Utah Geological Survey, Salt Lake City, Utah 84114, USA Correspondence: E-mail: [email protected] The Skymo Complex in the North Cascades, Washington, is a layered mafic intrusion within the Ross Lake fault zone, a major orogen-parallel structure at the eastern margin of the Cascades crystalline core. The complex is composed dominantly of troctolite and gabbro, both with inclusions of primitive olivine gabbro. Low-pressure minerals in the metasedimentary contact aureole and early crystallization of olivine + plagioclase in the mafic rocks indicate the intrusion was emplaced at shallow depths (<12 km). The Skymo rocks have trace-element characteristics of arc magmas, but the association of Mg-rich olivine (Fo88–80) with relatively sodic plagioclase (An75–60) and the Al/Ti ratios of clinopyroxene are atypical of arc gabbros and more characteristic of rift-related gabbros. A Sm-Nd isochron indicates crystallization in the early Tertiary (ca. 50 Ma), coeval with the nearby Golden Horn alkaline granite. Mantle melting to produce Skymo magma likely occurred in a mantle wedge with a long history of arc magmatism. The Skymo mafic complex and the Golden Horn granite were emplaced during regional extension and collapse of the North Cascades orogen and represent the end of large-scale magmatism in the North Cascades continental arc.
  • Geologic Map of the North Cascade Range, Washington by Ralph A

    Geologic Map of the North Cascade Range, Washington by Ralph A

    Prepared in cooperation with Washington State Division of Geology and Earth Resources, U.S. National Park Service, and U.S. Forest Service Geologic Map of the North Cascade Range, Washington By Ralph A. Haugerud and Rowland W. Tabor Nontechnical pamphlet to accompany Scientific Investigations Map 2940 Looking south from the North Klawatti Glacier [Mbse]. In the right foreground, the glacier breaks into a heavily crevassed icefall where it descends steeply. Rock in the foreground knob is Eldorado Orthogneiss (unit TKgo), a 90 million-year-old stitching pluton, which here includes numerous dikes of light- colored pegmatite. Mount Buckner on the left skyline and Mount Forbidden hidden in clouds are also eroded from the Eldorado Orthogneiss (photographed in 1987). 2009 U.S. Department of the Interior U.S. Geological Survey CONTENTS Introduction.....................................................................................................................................................1 Using this report ....................................................................................................................................1 Map preparation ...................................................................................................................................1 Major sources of new data .................................................................................................................1 Acknowledgments ................................................................................................................................2
  • Best of the Crest

    Best of the Crest

    22 » On Trail July + August 2011 » Washington Trails With its sparkling lakes and big vistas, the Goat Rocks earned high marks from PCT hikers. Photo by Doug Diekemma. Best of the Crest HIKE IT» Hikers weigh in on their favorite day hikes and backpacks Shoe Lake on Washington’s Pacific Crest Trail Round Trip Miles: 14 Elevation Gain: 2,600’ Few trails epitomize the phrase “the journey “Don’t think you have to be a thru- is the destination” as well as the Pacific Crest hiker to experience the beauty and Snowgrass Flat Trail. The trail winds 2,650 miles from Mexico solitude of the PCT.” Round Trip Miles: 41 to Canada—from California’s high deserts —Sonya “Sawin’ Ya” Rodgers Elevation Gain: 8,940’ and grand Sierra Nevada, across the volcanic badlands of Oregon, and through the glacier- capped Cascades of Washington. Yet, as many When asked what the most scenic stretch of PCT hikers have proclaimed, “It’s not just about trail is, the majority of our Pacific Crest Trail getting to Canada.” One doesn’t need to take hikers named the Goat Rocks as one of the on the entire trail to experience the wonder most striking areas within the Washington and solitude of hiking this iconic route. There section. The Goat Rocks region is noted for its are plenty of shorter trip options available to rugged volcanic landscape—the remnants of give you a taste of what the PCT is all about. an ancient volcano, now eroded into a series of jagged peaks and knife-edge ridges.
  • 1968 Mountaineer Outings

    1968 Mountaineer Outings

    The Mountaineer The Mountaineer 1969 Cover Photo: Mount Shuksan, near north boundary North Cascades National Park-Lee Mann Entered as second-class matter, April 8, 1922, at Post Office, Seattle, Wash., under the Act of March 3, 1879. Published monthly and semi-monthly during June by The Mountaineers, P.O. Box 122, Seattle, Washington 98111. Clubroom is at 7191h Pike Street, Seattle. Subscription price monthly Bulletin and Annual, $5.00 per year. EDITORIAL STAFF: Alice Thorn, editor; Loretta Slat­ er, Betty Manning. Material and photographs should be submitted to The Mountaineers, at above address, before Novem­ ber 1, 1969, for consideration. Photographs should be black and white glossy prints, 5x7, with caption and photographer's name on back. Manuscripts should be typed double-spaced and include writer's name, address and phone number. foreword Since the North Cascades National Park was indubi­ tably the event of this past year, this issue of The Mountaineer attempts to record aspects of that event. Many other magazines and groups have celebrated by now, of course, but hopefully we have managed to avoid total redundancy. Probably there will be few outward signs of the new management in the park this summer. A great deal of thinking and planning is in progress as the Park Serv­ ice shapes its policies and plans developments. The North Cross-State highway, while accessible by four­ wheel vehicle, is by no means fully open to the public yet. So, visitors and hikers are unlikely to "see" the changeover to park status right away. But the first articles in this annual reveal both the thinking and work which led to the park, and the think­ ing which must now be done about how the park is to be used.
  • Geologic Map of the Doe Mountain 15' Quadrangle, Okanogan County, Washington

    Geologic Map of the Doe Mountain 15' Quadrangle, Okanogan County, Washington

    U.S. DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP MF-23T6 US. GEOLOGICAL SURVEY GEOLOGIC MAP OF THE DOE MOUNTAIN 15' QUADRANGLE, OKANOGAN COUNTY, WASHINGTON By Victoria R. Todd DISCUSSION Pasayten fault are overlain locally by glacial drift and various postglacial deposits. INTRODUCTION The Doe Mountain 15' quadrangle is located in SEDIMENTARY AND VOLCANIC ROCKS north-central Washington in the eastern half of the The Methow basin is the southern continuation of Concrete 1° by 2° quadrangle (fig. 1; on map sheet). the informally named Methow-Pasayten trough U.S. Geological Survey mapping in the eastern half of (Tennyson and Cole, 1978), which extends from north- the Concrete quadrangle in 1981 and 1982 was part of central Washington into southern British Columbia a crustal transect across the northwestern United (fig. 1). The Mesozoic basin exposes a thick (35-70 States. Previous work in the Doe Mountain quadrangle km) sequence of unmetamorphosed to weakly and adjacent areas dealt chiefly with the sedimentary metamorphosed Jurassic and Cretaceous sedimentary rocks of the Methow basin, the southernmost part of and volcanic rocks (Coates, 1974; Barksdale, 1975; the larger Mcthow-Pasayten trough (fig. 1) (Maurer, Tennyson and Cole, 1978; O'Brien, 1986). Tt ? 1958; Dixon, 1959; Cole, 1973; Barksdale, 1975; sequence is dominantly marine, although tH Tennyson and Cole, 1978; Trexler, 1985). Major fault Cretaceous part includes both marine and nonmarine zones bound the Methow-Pasayten trough: on the west rocks. The Jurassic and lower Lower Cretaceous part are the Hozameen, the North Creek, and the Twisp of the section consists of volcanic, volcaniclastic, ard River-Foggy Dew faults; on the east is the Pasayten clastic strata that were deposited in and adjacent to a fault, which passes through the southwestern part of marine basin.
  • Structure and Emplacement of the Eocene Golden Horn Batholith, North Cascades, Washington

    Structure and Emplacement of the Eocene Golden Horn Batholith, North Cascades, Washington

    San Jose State University SJSU ScholarWorks Master's Theses Master's Theses and Graduate Research Spring 2018 Structure and Emplacement of the Eocene Golden Horn Batholith, North Cascades, Washington Christopher Scudder San Jose State University Follow this and additional works at: https://scholarworks.sjsu.edu/etd_theses Recommended Citation Scudder, Christopher, "Structure and Emplacement of the Eocene Golden Horn Batholith, North Cascades, Washington" (2018). Master's Theses. 4919. DOI: https://doi.org/10.31979/etd.p6p4-am45 https://scholarworks.sjsu.edu/etd_theses/4919 This Thesis is brought to you for free and open access by the Master's Theses and Graduate Research at SJSU ScholarWorks. It has been accepted for inclusion in Master's Theses by an authorized administrator of SJSU ScholarWorks. For more information, please contact [email protected]. STRUCTURE AND EMPLACEMENT OF THE EOCENE GOLDEN HORN BATHOLITH, NORTH CASCADES, WASHINGTON A Thesis Presented to The Faculty of the Department of Geology San José State University In Partial Fulfillment of the Requirement for the Degree Master of Science by Christopher A. Scudder May 2018 © 2018 Christopher A. Scudder ALL RIGHTS RESERVED The Designated Thesis Committee Approves the Thesis Titled STRUCTURE AND EMPLACEMENT OF THE EOCENE GOLDEN HORN BATHOLITH, NORTH CASCADES, WASHINGTON by Christopher A. Scudder APPROVED FOR THE DEPARTMENT OF GEOLOGY SAN JOSÉ STATE UNIVERSITY May 2018 Dr. Robert Miller Department of Geology Dr. Ellen Metzger Department of Geology Dr. Jonathan Miller Department of Geology ABSTRACT STRUCTURE AND EMPLACEMENT OF THE EOCENE GOLDEN HORN BATHOLITH, NORTH CASCADES, WASHINGTON By Christopher A. Scudder The 48 Ma Golden Horn batholith is a ~310 km2, shallow intrusion constructed of sub-horizontal sheets in the crystalline core of the North Cascades of Washington.
  • Geologic Map of Washington - Northwest Quadrant

    Geologic Map of Washington - Northwest Quadrant

    GEOLOGIC MAP OF WASHINGTON - NORTHWEST QUADRANT by JOE D. DRAGOVICH, ROBERT L. LOGAN, HENRY W. SCHASSE, TIMOTHY J. WALSH, WILLIAM S. LINGLEY, JR., DAVID K . NORMAN, WENDY J. GERSTEL, THOMAS J. LAPEN, J. ERIC SCHUSTER, AND KAREN D. MEYERS WASHINGTON DIVISION Of GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-50 2002 •• WASHINGTON STATE DEPARTMENTOF 4 r Natural Resources Doug Sutherland· Commissioner of Pubhc Lands Division ol Geology and Earth Resources Ron Telssera, Slate Geologist WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES Ron Teissere, State Geologist David K. Norman, Assistant State Geologist GEOLOGIC MAP OF WASHINGTON­ NORTHWEST QUADRANT by Joe D. Dragovich, Robert L. Logan, Henry W. Schasse, Timothy J. Walsh, William S. Lingley, Jr., David K. Norman, Wendy J. Gerstel, Thomas J. Lapen, J. Eric Schuster, and Karen D. Meyers This publication is dedicated to Rowland W. Tabor, U.S. Geological Survey, retired, in recognition and appreciation of his fundamental contributions to geologic mapping and geologic understanding in the Cascade Range and Olympic Mountains. WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-50 2002 Envelope photo: View to the northeast from Hurricane Ridge in the Olympic Mountains across the eastern Strait of Juan de Fuca to the northern Cascade Range. The Dungeness River lowland, capped by late Pleistocene glacial sedi­ ments, is in the center foreground. Holocene Dungeness Spit is in the lower left foreground. Fidalgo Island and Mount Erie, composed of Jurassic intrusive and Jurassic to Cretaceous sedimentary rocks of the Fidalgo Complex, are visible as the first high point of land directly across the strait from Dungeness Spit.
  • Summer/Fall 2008

    Summer/Fall 2008

    THE WILD CASCADES THE JOURNAL OF THE NORTH CAS CADES CONSERVATION COUNCIL SUMMER /FALL 2008 THE WILD CASCADES • Summer/Fall 2008 1 The North Cascades THE WILD CASCADES Summer/Fall 2008 Conservation Council was formed in 1957 “To protect and In This Issue preserve the North Cascades’ scenic, scientific, recreational, educational, 3 President’s Report — MARC BARDSLEY and wilderness values.” Continuing New NCCC Board Members this mission, NCCC keeps government officials, environmental organizations, 4 NCCC Explores Park and Wilderness Additions — JIM DAVIS , EXECUTIVE and the general public informed about DIRECTOR , NORTH CASCADES CO N SERVATIO N COU N CIL issues affecting the Greater North Wolves Get a Breather — JIM DAVIS Cascades Ecosystem. Action is pursued 5 Calendar of Events for the North Cascades, Fall 2008 through legislative, legal, and public 6 40th Anniversary Dinner and Auction, October 3 participation channels to protect the lands, waters, plants and wildlife. 7 Chip Jenkins — Our New Superintendent of North Cascades National Park Service Complex — DAVE FLUHARTY Over the past half century the NCCC 8 Global Warming and Wild Lands — CO N WAY LEOVY has led or participated in campaigns to create the North Cascades National 9 Whitechuck River Update — RICK MCGUIRE Park Complex, Glacier Peak Wilder- 10 Blanchard Mountain Victory: the NCCC wins one in court ness, and other units of the National 11 Happy Birthday North Cascades National Park — KEN WILCOX Wilderness System from the W.O. Douglas Wilderness north to the 17 Backcountry Travels: Swamp Creek — TO M HA mm O N D Alpine Lakes Wilderness, the Henry M. 18 National Forests ORV Travel Management Update, July 2008 Jackson Wilderness, the Chelan-Saw- Reiter Foothills tooth Wilderness, the Wild Sky Wil- 19 Pratt River Proposal Update with map — RICK MCGUIRE derness and others.
  • Wilderness Trip Planner

    Wilderness Trip Planner

    National Park Service North Cascades National Park Service Complex U.S. Department of the Interior Stephen Mather Wilderness An Enduring Legacy of Wilderness “[I]t is hereby declared to be the policy of the Congress to secure for the American people of present and future generations the benefits of an enduring resource of wilderness.” — Wilderness Act, 1964 The North Cascades National Park Complex includes 684,000 acres in three units: North Cascades National Park, Lake Chelan National Recre- ation Area, and Ross Lake National Recreation Area. Congress has designated 94% of the Complex as the Stephen Mather Wilderness. Today, as in the past, wilderness is an important part of every American’s story. People seek out wilderness for a variety of reasons: physical or mental challenge; solitude, renewal, or a respite from modern life; or as a place to find inspiration and to explore our heritage. What draws you to visit wilderness? The Stephen Mather Wilderness is at the heart of over two million acres of some of the wildest lands remaining, a place “where the earth and its community of life are untrammeled by man….” Untrammeled (meaning“free of restraint,” “unconfined”) captures the essence of wilderness: a place where the natural processes of the land prevail, and the developments of modern technological society are substantially unnoticeable. Here, we are visitors, but we also come home—to our natural heritage. It is a place to experience our past, and a place to find future respite. This is the enduring legacy of wilderness. To Hope, B.C.
  • Intermediate-Climbs-Guide-1.Pdf

    Intermediate-Climbs-Guide-1.Pdf

    Table of Conte TABLE OF CONTENTS Preface.......................................................................1 Triumph NE Ridge.....................................47 Privately Organized Intermediate Climbs ...................2 Vayu NW Ridge.........................................48 Intermediate Climbs List.............................................3 Vesper N Face..............................................49 Rock Climbs ..........................................................3 Wedge Mtn NW Rib ...................................50 Ice Climbs..............................................................4 Whitechuck SW Face.................................51 Mountaineering Climbs..........................................5 Intermediate Mountaineering Climbs........................52 Water Ice Climbs...................................................6 Brothers Brothers Traverse........................53 Intermediate Climbs Selected Season Windows........6 Dome Peak Dome Traverse.......................54 Guidelines for Low Impact Climbing...........................8 Glacier Peak Scimitar Gl..............................55 Intermediate Rock Climbs ..........................................9 Goode SW Couloir.......................................56 Argonaut NW Arete.....................................10 Kaleetan N Ridge .......................................57 Athelstan Moonraker Arete................11 Rainier Fuhrer Finger....................................58 Blackcomb Pk DOA Buttress.....................11 Rainier Gibralter Ledge.................................59
  • Geologic Map of Washington - Northeast Quadrant

    Geologic Map of Washington - Northeast Quadrant

    DE , )I .., I HINGTOh 98504 GEOLOGIC MAP OF WASHINGTON - NORTHEAST QUADRANT by KEITH L. STOFFEL, NANCY L. JOSEPH, STEPHANIE ZURENKO WAGGONER, CHARLES W. GULICK, MICHAEL A. KOROSEC, and BONNIE B. BUNNING WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-3 9 "'991 5 a WASHINGTON STATE DEPARTMENT OF 18' Natural Resources Bnan Boyle - CommJss1oner of Pubbc lnndl ' l Ari St8C!ns Supervtsor Division ot Geology and Earth Resources Raymond Lasmanls. Stale Geologjsl UBRP.RY DEPAPT'v'""'·.. ~-,T ,.,..,,.... ,,. "''·~·,·n"!r·1,·s1 .J,J'L. or:c-nuRcr-s,,,._ .... ·,., , L. GEOLOGY Ar:11J E:,-:1:-1 . F:c:s rnv1s10N ""'- OLYMPIA, WASHINGTON 98504 WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES Raymond Lasmanis, State Geologist GEOLOGIC MAP OF WASHINGTON - NORTHEAST QUADRANT by KEITH L. STOFFEL, NANCY L. JOSEPH, STEPHANIE ZURENKO WAGGONER, CHARLES W. GULICK, MICHAEL A. KOROSEC, and BONNIE B. BUNNING WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES GEOLOGIC MAP GM-39 1991 WASHINGTON STATE DEPARTMENT OF Natural Resources QE175 Brian Boyle - Comm1ss1oner of Publlc Lands A3 Art Stearns - Supervisor M3 39 copy l [text]e Photograph on envelope: Northwest-dipping cuesta formed on resistant layers of gneiss in the Okanogan meta­ morphic core complex near Riverside, Washington; Okanogan River in the foreground. Aerial view to the northeast. Photograph courtesy of K. F. Fox, Jr., U.S. Geological Survey. This report is for sale by: Publications Washington Department of Natural Resources Division of Geology and Earth Resources Mail Stop PY-12 Olympia, WA 98504 Folded map set: Price $ 7.42 Tax .58 (Washington residents only) Total $ 8.00 Flat map set: Price $ 9.28 Tax .