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Geology and Structural Evolution of the Foss River-Deception Creek Area, Cascade Mountains, Washington
AN ABSTRACT OF THE THESIS OF James William McDougall for the degree of Master of Science in Geology presented on Lune, icnct Title: GEOLOGY AND STRUCTURALEVOLUTION OF THE FOSS RIVER-DECEPTION CREEK AREA,CASCADE MOUNTAINS, WASHINGTOV, Redacted for Privacy Abstract approved: Robert S. Yekis Southwest of Stevens Pass, Washington,immediately west of the crest of the Cascade Range, pre-Tertiaryrocks include the Chiwaukum Schist, dominantly biotite-quartzschist characterized by a polyphase metamorphic history,that correlates with schistose basement east of the area of study.Pre-Tertiary Easton Schist, dominated by graphitic phyllite, is principallyexposed in a horst on Tonga Ridge, however, it also occurs eastof the horst.Altered peridotite correlated to Late Jurassic IngallsComplex crops out on the western margin of the Mount Stuart uplift nearDeception Pass. The Mount Stuart batholith of Late Cretaceous age,dominantly granodiorite to tonalite, and its satellite, the Beck lerPeak stock, intrude Chiwaukum Schist, Easton Schist, andIngalls Complex. Tertiary rocks include early Eocene Swauk Formation, a thick sequence of fluviatile polymictic conglomerateand arkosic sandstone that contains clasts resembling metamorphic and plutonic basement rocks in the northwestern part of the thesis area.The Swauk Formation lacks clasts of Chiwaukum Schist that would be ex- pected from source areas to the east and northeast.The Oligocene (?) Mount Daniel volcanics, dominated by altered pyroclastic rocks, in- trude and unconformably overlie the Swauk Formation.The -
USGS Geologic Investigations Series I-1963, Pamphlet
U.S. DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP I-1963 U.S. GEOLOGICAL SURVEY GEOLOGIC MAP OF THE SKYKOMISH RIVER 30- BY 60 MINUTE QUADRANGLE, WASHINGTON By R.W. Tabor, V.A. Frizzell, Jr., D.B. Booth, R.B. Waitt, J.T. Whetten, and R.E. Zartman INTRODUCTION From the eastern-most edges of suburban Seattle, the Skykomish River quadrangle stretches east across the low rolling hills and broad river valleys of the Puget Lowland, across the forested foothills of the North Cascades, and across high meadowlands to the bare rock peaks of the Cascade crest. The quadrangle straddles parts of two major river systems, the Skykomish and the Snoqualmie Rivers, which drain westward from the mountains to the lowlands (figs. 1 and 2). In the late 19th Century mineral deposits were discovered in the Monte Cristo, Silver Creek and the Index mining districts within the Skykomish River quadrangle. Soon after came the geologists: Spurr (1901) studied base- and precious- metal deposits in the Monte Cristo district and Weaver (1912a) and Smith (1915, 1916, 1917) in the Index district. General geologic mapping was begun by Oles (1956), Galster (1956), and Yeats (1958a) who mapped many of the essential features recognized today. Areas in which additional studies have been undertaken are shown on figure 3. Our work in the Skykomish River quadrangle, the northwest quadrant of the Wenatchee 1° by 2° quadrangle, began in 1975 and is part of a larger mapping project covering the Wenatchee quadrangle (fig. 1). Tabor, Frizzell, Whetten, and Booth have primary responsibility for bedrock mapping and compilation. -
Where Snow Is a Landmark: Route Direction Elements in Alpine Contexts
CORE Metadata, citation and similar papers at core.ac.uk Provided by Bangor University: eBangor / Prifysgol Bangor Where Snow is a Landmark: Route Direction Elements in Alpine Contexts Ekaterina Egorova1,2, Thora Tenbrink3, Ross S. Purves1 1 Department of Geography, University of Zurich, Zurich, Switzerland {ekaterina.egorova,ross.purves}@geo.uzh.ch 2 University Priority Research Programme Language and Space (URPP SpuR), University of Zurich, Switzerland 3 School of Linguistics and English Language, Bangor University, Bangor, UK [email protected] Abstract. Route directions research has mostly focused on urban space so far, highlighting human concepts of street networks based on a range of recurring elements such as route segments, decision points, landmarks and actions. We explored the way route directions reflect the features of space and activity in the context of mountaineering. Alpine route directions are only rarely segmented through decision points related to reorientation; instead, segmentation is based on changing topography. Segments are described with various degrees of detail, depending on difficulty. For landmark description, direction givers refer to properties such as type of surface, dimension, colour of landscape features; ter- rain properties (such as snow) can also serve as landmarks. Action descriptions reflect the geometrical conceptualization of landscape features and dimension- ality of space. Further, they are very rich in the semantics of manner of motion. Keywords: route directions ∙ natural environment ∙ segmentation ∙ landmark ∙ mountaineering ∙ 1 Introduction In 1995, Max Egenhofer and David Mark proposed the notion of Naive Geography for the body of knowledge that lay people have about the surrounding geographic world [15] as a counterpart to the formalizations used by professional geographic community. -
Stratigraphy, Age, and Provenance of the Eocene Chumstick Basin
Stratigraphy, age, and provenance of the Eocene Chumstick basin, Washington Cascades; implications for paleogeography, regional tectonics, and development of strike-slip basins Erin E. Donaghy1,†, Paul J. Umhoefer2, Michael P. Eddy1, Robert B. Miller3, and Taylor LaCasse4 1 Department of Earth, Planetary, and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907, USA 2 School of Earth Sciences and Sustainability, Northern Arizona University, Flagstaff, Arizona 86011, USA 3 Department of Geology, San Jose State University, San Jose, California 95192, USA 4 Department of Geology, Carleton College, Northfield, Minnesota 55057 USA ABSTRACT tions can be constrained at high temporal Here we present a large provenance data set resolution (0.5–1.5 m.y. scale) for an ancient coupled with new lithofacies mapping from Strike-slip faults form in a wide variety strike-slip basin and permits a detailed re- the Chumstick basin within the framework of a of tectonic settings and are a first-order construction of sediment routing pathways recently developed precise depositional chronol- control on the geometry and sediment accu- and depositional environments. As a result, ogy (Eddy et al., 2016b). This basin formed in mulation patterns in adjacent sedimentary we can assess how varying sediment supply a strike-slip setting in central Washington and basins. Although the structural and depo- and accommodation space affects the depo- provides a unique opportunity to track changes sitional architecture of strike-slip basins is sitional architecture during strike-slip basin in sediment routing systems that are related well documented, few studies of strike-slip evolution. to rapidly changing paleogeography in basin- basins have integrated depositional age, bounding basement blocks. -
Final Mountain Loop Road Repair Environmental Assessment
Figure 1-Vicinity Map, Location of Damage Forest-wide, 2003 Flood i Table of Content Chapter 1 –Need for Action ....................................................................................................... 1 Introduction ......................................................................................................................................... 1 Mountain Loop History, Desired Road Condition ............................................................................................. 1 October 2003 Flood Event ................................................................................................................................. 3 Need for Action .................................................................................................................................... 6 Proposed Action................................................................................................................................... 7 Proposed Repair at Milepost 33.1 (T30N, R11E, Section 29) ........................................................................... 7 Proposed Repair at Milepost 33.6 (T30N, R11E, Section 29) ......................................................................... 11 Proposed Repair at Milepost 34.8 (T30N, R11E, Section 28) ......................................................................... 16 Proposed Repair at Milepost 35.6 (T30N, R11E, Section 21) ......................................................................... 18 Project Scope..................................................................................................................................... -
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 -
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. -
The Yodelyodel
The mountains will always be there; the trick is to make sure you are, too. —Hervey Voge TheThe YodelYodel Volume 14, Issue 4 December 2007 Keep climbing mountains and don’t slip! Spell of the Enchantments Story and photos by Dave McC. indulged ourselves in some high octane In This Issue: I recently had the opportunity to hike in treats, and passed out with smiles on our faces. I had terrible dreams of sharks —OSAT Quick Reference the Enchantments with Rik A., Nancy T., —p.3 and Bill L. I had heard of the Enchant- roasting me over a spit and nibbling on my ments, but didn’t really know much about toes, but that’s not really all that unusual —Car camp-out rages for me. by Deborah L— p.5 them, or even exactly where they were located, but I’d always heard they were We awoke on Sunday to find that Nancy —Sahale Arm beautiful. So, when Rik mentioned he had by Alexei E— p. 6 and Bill had arrived during the night, and an extra permit to go, I jumped at the were asleep in their car. I had called them chance. I imagined us hiking through the night before to let them know that the —OSAT Memoir beautiful green meadows with little lakes by Nodair R—p.7 ranger in Leavenworth had told us there and perhaps taking a swim now and again was “two feet of snow with four foot as we sang tunes from “The Sound of drifts” in the Enchantments, but what I —My Big Fat Ego Music.” No one has ever said I lack in by Louisa P. -
North Cascades National Park I Mcallister Cutthroat Pass A
To Hope, B.C. S ka 40mi 64km gi t R iv er Chilliwack S il Lake v e CHILLIWACK LAKE SKAGIT VALLEY r MANNING - S k a g PROVINCIAL PARK PROVINCIAL PARK i PROVINCIAL PARK t Ross Lake R o a d British Columbia CANADA Washington Hozomeen UNITED STATES S i Hozomeen Mountain le Silver Mount Winthrop s Sil Hoz 8066ft ia ve o Castle Peak 7850ft Lake r m 2459m Cr 8306ft 2393m ee e k e 2532m MOUNT BAKER WILDERNESS Little Jackass n C Mount Spickard re Mountain T B 8979ft r e l e a k i ar R 4387ft Hozomeen Castle Pass 2737m i a e d l r C ou 1337m T r b Lake e t G e k Mount Redoubt lacie 4-wheel-drive k r W c 8969ft conditions east Jack i Ridley Lake Twin a l of this point 2734m P lo w er Point i ry w k Lakes l Joker Mountain e l L re i C ak 7603ft n h e l r C R Tra ee i C i Copper Mountain a e re O l Willow 2317m t r v e le n 7142ft T i R k t F a e S k s o w R Lake a 2177m In d S e r u e o C k h g d e u c r Goat Mountain d i b u i a Hopkins t C h 6890ft R k n c Skagit Peak Pass C 2100m a C rail Desolation Peak w r r T 6800ft li Cre e ave 6102ft er il ek e e Be 2073m 542 p h k Littl 1860m p C o Noo R C ks i n a Silver Fir v k latio k ck c e ee Deso e Ro Cree k r Cr k k l e il e i r B e N a r Trail a C To Glacier r r O T r C Thre O u s T e Fool B (U.S. -
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. -
The Hidden Side of Washington's Enchantments
The Hidden Side of Washington’s Enchantments: Tips and Tales from a Wilderness Ranger ANDREA JIMENEZ: Welcome everyone to the first of our lineup of family weekend events. This is the Hidden Side of Washington's Enchantments. We have Hannah Kiser from OREC presenting for us today. She did a presentation for us a couple of weeks back on thru hiking, which was awesome. We're really happy to have her back. My name is Andrea Jimenez. I'm the Program Coordinator here at Global Connections. Yeah, Hannah, I'm going to pass it on to you. HANNAH KISER: Awesome. This is a beautiful mountain goat, and I'll just tell you a quick story about this really fast before I get started. Once I had someone come up to me and asked me, what we shampooed the mountain goats with? Giving a little bit of context, I used to work for the Forest Service in the Enchantments where we have these mountain goats. Someone asked me, "What do you shampoo the mountain goats with?" I was like, "This is not a petting zoo. This is a wild animal that I do not shampoo." Anyway, get lots of interesting responses. But we will move on to introductions. If you want to in the chat, it actually might work better, some people don't like unmuting themselves. If you want to write your name in experience recreating with family, have you heard of the Enchantments or been to the Enchantments, and what you're hoping to get out of this? If you don't want to write in the chat and you prefer to unmute yourself, then you can go ahead and speak now. -
Naturally Appealing: a Scenic Gateway in Washington's North
Naturally Appealing A scenic getaway in Washington’s North Cascades | By Scott Driscoll s o u r h i k i n g g r o u p arrives at the top of Heather Park, about 110 miles northeast of Seattle. Pass in Washington state’s North Cascades, The Park Service is celebrating the park’s we hear several low, guttural grunts. 40th birthday this year, and also the 20th anni- “That’s the sound of my heart after versary of the Washing- ton Park Wilderness seeing a bear,” comments a female hiker. She Act, which designated 94 percent of the park chuckles a trifle nervously, and we all look around. as wilderness. This area’s “majestic Those grunts sound like they’re coming from more mountain scenery, snowfields, glaciers, than one large animal. alpine meadows, lakes and other unique glaci- Whatever’s causing the sound remains well hid- ated features” were cited den behind huckleberries, subalpine firs and boul- as some of the reasons ders, but Libby Mills, our naturalist guide, sets our Congress chose to pro- minds at ease. “Those tect the land in 1968 are male dusky grouse,” “for the benefit, use and she assures us. “They’re inspiration of present competing for female and future generations.” attention.” Those natural fea- She explains that they tures are also among the make the grunting reasons the Park Service sound by inhaling air posted this quote—from CAROLYN WATERS into pink sacs—one at 19th century Scottish each side of the neck— botanist David Douglas, one of the early explorers of and then releasing the the Pacific Northwest and the person for whom the air.