Newberry National Volcanic Monument U.S

Total Page:16

File Type:pdf, Size:1020Kb

Newberry National Volcanic Monument U.S Deschutes National Forest Newberry National Volcanic Monument U.S. Forest Service U.S. Department of Agriculture Summer/Fall 2015 Volcanic Vistas Visitor Guide “Frost at Paulina Lake” Photo: A. Jewell EBRATIN EL G Volcanic Wonders… C Yours to Discover! Visiting Newberry National Volcanic Monument allows you to explore Newberry Volcano, YEARS the largest volcano in the Cascade Range. There are extraordinary Volcanic Wonders within the Monument, making it a great place to learn about Central Oregon’s fiery past. Newberry’s erup- tive history began 400,000 years ago and has created massive lava flows covering 1,200 square Newberry’s visitors of yesteryear: stopping by Paulina miles, producing lava tubes, and over 400 cinder cones and volcanic vents during it’s active Peak along old Forest Road 21. periods. The last eruption—just 1,300 years ago—formed the youngest lava flow in Oregon. Welcome! Newberry’s rich cultural history offers many ways for you to connect with those who came before. From the native communities who first crossed this land to the early European and June marks the beginning of a year- American explorers, from the grass-roots led Monument creators to casual visitors today, long celebration of the designation people have marveled at this rugged landscape for thousands of years. of Newberry National Volcanic Monument. Join us to celebrate this The Volcanic Wonders of Newberry National Volcanic Monument offer boundless opportunities remarkable volcanic landscape, its for exploration and recreation… yours to discover! diversity of outstanding recreation opportunities, and its rich cultural Lava Butte rises 500 feet above its history. 9 square-mile lava flow. It erupted 7,000 years ago and is one of Newberry’s The Monument was born from many cinder cones. (see page 6) grassroots citizen passion to protect Newberry for present and future generations. It’s this tremendous Lava Cast Forest formed when collaborative accomplishment 25 a lava flow overtook an old-growth Lava Butte photo: K. Sperl years ago that we are grateful for forest and cooled to form casts of the every day. trees that once stood there. I truly hope you have a safe and rewarding exploration of Newberry Lava River Cave is a mile-long Lava Cast Forest photo: K. Sperl National Volcanic Monument. Thank lava tube formed from one of Newberry you for visiting and celebrating Volcano’s massive eruptions about your treasured public lands on the 80,000 years ago. (see page 7) Deschutes National Forest. Lava River Cave photo: K. Sperl Newberry Caldera contains the crystal-clear East Lake and Paulina Lake, several lava flows, and lots of Scott McBride opportunity for adventure. Newberry Caldera photo: US Forest Service Monument Manager Big Obsidian Flow formed just 1,300 years ago making it Oregon’s Big Obsidian Flow Rensch C. photo: Look Inside! youngest lava flow. 2… Camping, Lodging, Food Paulina Peak crowns Newberry 3… Activities Caldera at its highest point of 7,984 ft. 4… Hiking Trails Paulina Peak photo: McNally C.. 5… Monument Map Paulina Falls spills over the lowest 6… Could It Erupt Again? point of Newberry Caldera, plummet- ing 80 ft. in a twin waterfall. Paulina Falls photo: J. Reese 7… Caves, Bats, & Frogs! 8… Support Your Monument! Call the MONUMENT HOTLINE (541) 383-5700 for up-to-date information photo: K. Hohman photo: K. Sperl photo: G. Frey photo: J. Snavely Additional accommodations and a variety Monument News Exhibits of restaurants are located in the nearby Facilities The Chitwood Exhibit Hall is located communities of Sunriver and La Pine. Ser- Cave Improvements within the Lava Lands Visitor Center vices, a major hospital, and many lodging Lava River Cave renovations in 2014 & Services with interpretive displays about the geol- and dining options are also available in improved segments of the stairs and ogy, ecology and cultural history of the Bend to the north of the Monument. walkway. A sturdy handrail was added Visitor Centers Monument. The exhibit hall also includes to the historic rock stairway into the information about the eruptive history of Camping There are two visitor centers on the Mon- Newberry Volcano. A 3-D topographic cave and a wide metal walkway was Campgrounds are located along Paulina ument, both staffed by Rangers ready to map provides an excellent overview of the installed over a rocky section and re- Lake Road (FS Road 21) at the southern answer questions and provide information entire Monument. The history of the vol- end of the Monument in Newberry Cal- routed away from hazardous rock out- to enhance the quality of your visit. Each canic activity of the Monument continues dera. Please see the table below for de- croppings. Though it accommodates visitor center has interpretive displays and in colorful interpretive panels along the tails. All campgrounds are managed and two-way traffic, the walkway does a Discover Your Forest store that sells Trail of the Molten Land behind the operated by Hoodoo Recreation. Con- not run the entire length of the cave. maps, books and gifts. Lava Lands Visitor Center. Along the Big tact Hoodoo directly for reservations: Visitors will still encounter uneven and Obsidian Flow trail, interpretive panels Lava Lands Visitor Center slippery surfaces and should use cau- explain the significance of the black volca- Information (M-F): 541-338-7869 May 1 – May 22: Open Thu—Mon nic glass. A display at the Paulina Visitor Reservations (Daily): 877-444-6777 tion walking through the cave. 10:00 am to 4:00 pm Center shows the timeline of human his- www.hoodoorecreation.com Explore the Sun-Lava Path May 23 – September 7: Open Daily tory on the Monument. Camp only in designated campgrounds 9:00 am to 5:00 pm Bike,hike, or stroll on the 5.5-mile within Newberry Caldera. Dispersed paved path that connects Lava Lands Sept. 8 – Sept. 30: Open Daily Lodging & Dining camping is allowed outside of Newberry Visitor Center, Benham Falls East Trail- 10:00 am to 4:00 pm Caldera in some locations. Stop by one of Two lodges are located within Newberry head, and the community of Sunriver. the Visitor Centers for detailed informa- Oct. 3 – Oct. 11: Open Weekends Caldera and operate under a special use tion and to receive a map identifying dis- The entire path is fully accessible and a 10:00 am to 4:00 pm permit through the Deschutes National wonderful adventure for all abilities. persed camping locations. Paulina Visitor Center Forest. Each offers cabin rentals, casual May 23 – June 7: Weekends and Holiday dining, a small general store and boat 10:00 am to 4:00 pm rentals. Guide Services There are a number of permitted guide June 11 – Sept. 7: Open Daily For information or to make reservations at services operating within the Monument 10:00 am to 5:00 pm Paulina Lake Lodge, call 541-536-2240 Good to Know or visit www.paulinalakelodge.com providing volcano tours, canoe/kayak ex- Sept. 8 – Sept. 30: Open Daily Accessibility cursions, fishing trips, snowmobile rentals 10:00 am to 4:00 pm For information about East Lake Resort and mountain bike adventures. Inquire at Many sites on the Monument are ac- or to make reservations, call 541-536-2230 one of the Visitor Centers for more infor- cessible to individuals who have various Oct. 3 – Oct. 11: Open Weekends or visit www.eastlakeresort.com mation. ranges of mobility. The Lava Lands Visi- 10:00 am to 4:00 pm tor Center and Chitwood Exhibit Hall are accessible to wheelchairs. There are also large, accessible restrooms with Campgrounds & Lodging running water. Accessible paths on the Total Reserve Monument include the Sun-Lava Path, Name Amenities Fee Per Night Sites Sites and segments of the Trail of the Mol- ten Land, Paulina Lakeshore Loop, Lava Paulina Lake Campground $18 / Extra Vehicle $9 69 39 Cast Forest Trail and the Paulina Falls acdgfkj Trail. Paulina Lake Campground has a Newberry Group Camp Site A: $75 Site B, C: $100 3 3 limited number of accessible sites. The afg Forest Service is working to improve Chief Paulina Horse Camp $14 / $18 / Extra Vehicle $7 14 14 accessible services on the Monument ag Little Crater Campground $18 / Extra Vehicle $9 49 25 for visitors with various impairments. agfk East Lake Campground $18 / Extra Vehicle $9 29 18 Drinking Water acgfk Water fountains are available at Lava Cinder Hill Campground $18 / Extra Vehicle $9 110 55 Lands Visitor Center. Running water is acgfk available at most campgrounds on the Paulina Lake Lodge Cabins: $95 - $252 14 14 Monument during peak season (June – HIgfk September). Most day use sites DO NOT East Lake Resort Cabins: $84 - $207 16 16 have running water. The Visitor Centers HIgfku do not sell bottled water in an effort to East Lake RV Park Tent: $25 / RV: $32 45 45 reduce waste and impacts from plastic ahFgfu bottles. Reusable water bottles can be Posted day use sites within campgrounds require valid recreation pass displayed in addition to any camping fees. See map on page 5 for campsite locations. purchased at both Visitor Centers. Restrooms Recreation passes can be purchased at Restrooms with flush toilets and run- Recreation Passes Monument Welcome Stations located at ning water are located at both Visitor Recreation fees are required at all posted Lava Lands Visitor Center, Lava River Cave, Centers and many campgrounds. Most sites. Valid recreation passes include: Paulina Visitor Center, and all Forest Service day use areas have vault toilets. National Forest Day Pass ($5) Rangers Stations, or online at: www.fs.usda.gov/main/deschutes/passes- Showers National Forest ePass ($5) permits/recreation East Lake Resort/ RV campground has coin-operated showers.
Recommended publications
  • Source to Surface Model of Monogenetic Volcanism: a Critical Review
    Downloaded from http://sp.lyellcollection.org/ by guest on September 28, 2021 Source to surface model of monogenetic volcanism: a critical review I. E. M. SMITH1 &K.NE´ METH2* 1School of Environment, University of Auckland, Auckland, New Zealand 2Volcanic Risk Solutions, Massey University, Palmerston North 4442, New Zealand *Correspondence: [email protected] Abstract: Small-scale volcanic systems are the most widespread type of volcanism on Earth and occur in all of the main tectonic settings. Most commonly, these systems erupt basaltic magmas within a wide compositional range from strongly silica undersaturated to saturated and oversatu- rated; less commonly, the spectrum includes more siliceous compositions. Small-scale volcanic systems are commonly monogenetic in the sense that they are represented at the Earth’s surface by fields of small volcanoes, each the product of a temporally restricted eruption of a composition- ally distinct batch of magma, and this is in contrast to polygenetic systems characterized by rela- tively large edifices built by multiple eruptions over longer periods of time involving magmas with diverse origins. Eruption styles of small-scale volcanoes range from pyroclastic to effusive, and are strongly controlled by the relative influence of the characteristics of the magmatic system and the surface environment. Gold Open Access: This article is published under the terms of the CC-BY 3.0 license. Small-scale basaltic magmatic systems characteris- hazards associated with eruptions, and this is tically occur at the Earth’s surface as fields of small particularly true where volcanic fields are in close monogenetic volcanoes. These volcanoes are the proximity to population centres.
    [Show full text]
  • A Unique Volcanic Field in Tharsis, Mars: Monogenetic Cinder Cones and Lava Flows As Evidence for Hawaiian Eruptions
    42nd Lunar and Planetary Science Conference (2011) 1379.pdf A UNIQUE VOLCANIC FIELD IN THARSIS, MARS: MONOGENETIC CINDER CONES AND LAVA FLOWS AS EVIDENCE FOR HAWAIIAN ERUPTIONS. P. Brož1 and E. Hauber2, 1Institute of Geophysics ASCR, v.v.i., Prague, Czech Republic, [email protected], 2Institut für Planetenforschung, DLR, Berlin, Germany, [email protected]. Introduction: Most volcanoes on Mars that have Data: We use images from several cameras, i.e. been studied so far seem to be basaltic shield volca- Context Camera (CTX), High Resolution Stereo Cam- noes, which can be very large with diameters of hun- era (HRSC), and High Resolution Imaging Science dreds of kilometers [e.g., 1] or much smaller with di- Experiment (HiRISE) for morphological analyses. ameters of several kilometers only [2]. Few Viking Topographic information (e.g., heights and slope an- Orbiter-based studies reported the possible existence gles) were determined from single shots of the Mars of cinder cones [3,4] or stratovolcanoes [5-7], and only Orbiter Laser Altimeter (MOLA) in a GIS environ- the advent of higher-resolution data led to the tentative ment, and from stereo images (HRSC, CTX) and de- interpretation of previously unknown edifices as cinder rived gridded digital elevation models (DEM). cones [8] or rootless cones [9]. The identification of Morphometry: For comparison between the cinder cones can constrain the nature of eruption proc- cones and terrestrial morphological analogues (i.e. esses and, indirectly, our understanding of the nature cinder cones [10]) we determined some basic mor- of parent magmas (e.g., volatile content). Here we re- phometric properties and their ratios (e.g., crater di- port on our observation of a unique cluster of possible ameter [WCR] vs.
    [Show full text]
  • The Science Behind Volcanoes
    The Science Behind Volcanoes A volcano is an opening, or rupture, in a planet's surface or crust, which allows hot magma, volcanic ash and gases to escape from the magma chamber below the surface. Volcanoes are generally found where tectonic plates are diverging or converging. A mid-oceanic ridge, for example the Mid-Atlantic Ridge, has examples of volcanoes caused by divergent tectonic plates pulling apart; the Pacific Ring of Fire has examples of volcanoes caused by convergent tectonic plates coming together. By contrast, volcanoes are usually not created where two tectonic plates slide past one another. Volcanoes can also form where there is stretching and thinning of the Earth's crust in the interiors of plates, e.g., in the East African Rift, the Wells Gray-Clearwater volcanic field and the Rio Grande Rift in North America. This type of volcanism falls under the umbrella of "Plate hypothesis" volcanism. Volcanism away from plate boundaries has also been explained as mantle plumes. These so- called "hotspots", for example Hawaii, are postulated to arise from upwelling diapirs with magma from the core–mantle boundary, 3,000 km deep in the Earth. Erupting volcanoes can pose many hazards, not only in the immediate vicinity of the eruption. Volcanic ash can be a threat to aircraft, in particular those with jet engines where ash particles can be melted by the high operating temperature. Large eruptions can affect temperature as ash and droplets of sulfuric acid obscure the sun and cool the Earth's lower atmosphere or troposphere; however, they also absorb heat radiated up from the Earth, thereby warming the stratosphere.
    [Show full text]
  • Volcanic Vistas Discover National Forests in Central Oregon Summer 2009 Celebrating the Re-Opening of Lava Lands Visitor Center Inside
    Volcanic Vistas Discover National Forests in Central Oregon Summer 2009 Celebrating the re-opening of Lava Lands Visitor Center Inside.... Be Safe! 2 LAWRENCE A. CHITWOOD Go To Special Places 3 EXHIBIT HALL Lava Lands Visitor Center 4-5 DEDICATED MAY 30, 2009 Experience Today 6 For a Better Tomorrow 7 The Exhibit Hall at Lava Lands Visitor Center is dedicated in memory of Explore Newberry Volcano 8-9 Larry Chitwood with deep gratitude for his significant contributions enlightening many students of the landscape now and in the future. Forest Restoration 10 Discover the Natural World 11-13 Lawrence A. Chitwood Discovery in the Kids Corner 14 (August 4, 1942 - January 4, 2008) Take the Road Less Traveled 15 Larry was a geologist for the Deschutes National Forest from 1972 until his Get High on Nature 16 retirement in June 2007. Larry was deeply involved in the creation of Newberry National Volcanic Monument and with the exhibits dedicated in 2009 at Lava Lands What's Your Interest? Visitor Center. He was well known throughout the The Deschutes and Ochoco National Forests are a recre- geologic and scientific communities for his enthusiastic support for those wishing ation haven. There are 2.5 million acres of forest including to learn more about Central Oregon. seven wilderness areas comprising 200,000 acres, six rivers, Larry was a gifted storyteller and an ever- 157 lakes and reservoirs, approximately 1,600 miles of trails, flowing source of knowledge. Lava Lands Visitor Center and the unique landscape of Newberry National Volcanic Monument. Explore snow- capped mountains or splash through whitewater rapids; there is something for everyone.
    [Show full text]
  • 2013 80% Post-Consumer Recycled Paper
    Volcanic Vistas Guide to Newberry National Volcanic Monument Becky McCall Lava Butte, depicted above, is the cinder cone volcano located to the North of Lava Lands Visitor Center. It was created during a two-phase eruption just over 7,000 years ago. The first phase sent gas-charged molten rock into the air. The material solidified in the air, trapping gas bubbles, and fell back to the earth as cinders in a pile. The grey outline above indicates the size of Lava Butte today. Lava spilled out of a side vent during the second phase and flowed for several miles to the Deschutes River. The lava cooled into a field of basaltic rock. These volcanic features, and many others, are preserved as part of Newberry National Volcanic Monument. To learn more about the Monument check out the quick facts at the bottom of each page. What Can I See In... Useful Contacts 2 Hours: Newberry National Volcanic Monument Lava Lands Visitor Center and Lava Butte Due to limited parking atop Lava Butte, 30 minute parking passes are issued on Current Information Hotline a first come, first served basis. Vehicles longer than 22 ft. prohibited. See page 6 for more information. 541-383-5700 Half-Day: Above sites plus explore Lava River Cave EMERGENCY 911 Allow 2 hours, round trip, to see entire cave. Site gate closes at 4pm. See page 7 for more information. Newberry National Volcanic Monument www.fs.usda.gov/attmain/centraloregon/specialplaces Full Day: Lava Lands Visitor Center 541-593-2421 Above sites plus Lava Cast Forest Access site via gravel road, 9 miles one way.
    [Show full text]
  • Volcanoes a to Z
    Mount St Helens National Volcanic Monument – Teacher’s Corner -Teacher Info. Gifford Pinchot National Forest USDA Forest Service Volcanoes A to Z – Bus Activity Time Requirement: all day Exhibit / Trail Used: all exhibits/trails visited Locations: all locations visited, review on the bus en route back to your school. This activity is to be completed throughout the day and between other activities. Students will make note of key words while reading exhibits, interpretive signs, or labels, or by hearing them from each other, their teacher, movies or rangers. Consider distributing on the bus and collecting on the bus. Goal: 1) The student will become familiar with terminology related to the study of volcanoes, geology, or the ecosystems that surround them. Objectives: 1) The student will listen attentively. 2) The student will recall and list vocabulary words for things and concepts encountered on a field trip to Mount St. Helens National Volcanic Monument. 3) The student will distinguish nouns from other parts of speech. WASHINGTON EALRS and OREGON BENCHMARK STANDARDS Washington Social Studies 2.0- The student understands the complex physical and human characteristics of places and regions. Geography 2.1- Describe the natural characteristics of places and regions. Science 4.2 Use writing and speaking skills to organize and express science ideas. a. Use science vocabulary appropriately in written explanations, conversations and verbal presentations. Oregon Science-CCG The Dynamic Earth- Understand the properties and limited availability of the materials which make up the Earth. BM1- Recognize physical differences in Earth materials. Language-CCG Select functional, precise, and descriptive words appropriate to audience and purpose.
    [Show full text]
  • Diamond Craters Oregon's Geologic
    Text by Ellen M. Benedict, 1985 Features at stops correspond to points on a clock ago, a huge mass of hot gases, volcanic ashes, bits face. Imagine that you are standing in the middle of a of pumice and other pyroclastics (fire-broken rock) Travel And Hiking Hints clock face. Twelve o’clock is the road in front of you violently erupted. The blast – greater than the May and 6 o’clock the road behind. If you always align the 18, 1980, eruption of Mt. St. Helens – deposited a Diamond Craters is located in the high desert country clock face with the road, you should be able to locate layer of pyroclastics 30 to 130 feet thick over an area about 55 miles southeast of Burns, Oregon. It’s an the features. almost 7,000 square miles! isolated place and some precautions should be taken . when traveling in the area. Start Tour. Mileage begins halfway Pyroclastics are between milepost 40 and 41 on State normal behavior Diamond Craters has no tourist facilities. The nearest Highway 205 at the junction to Diamond. for magmas place where gasoline is sold is at Frenchglen. Turn left. (subsurface That’s the opinion held by scores of molten rocks) Keep your scientists and educators who have visited Diamond, Oregon, a small ranching community, was of rhyolitic (a vehicle on named in 1874 for Mace McCoy’s Diamond brand. volcanic material and studied the area. It has the “best and hard-packed The nearby craters soon became known as Diamond related to granite) most diverse basaltic volcanic features in the road surfaces Craters.
    [Show full text]
  • Field Guides
    Downloaded from fieldguides.gsapubs.org on June 1, 2012 Field Guides The post-Mazama northwest rift zone eruption at Newberry Volcano, Oregon Daniele Mckay, Julie M. Donnelly-Nolan, Robert A. Jensen and Duane E. Champion Field Guides 2009;15;91-110 doi: 10.1130/2009.fld015(05) Email alerting services click www.gsapubs.org/cgi/alerts to receive free e-mail alerts when new articles cite this article Subscribe click www.gsapubs.org/subscriptions/ to subscribe to Field Guides Permission request click http://www.geosociety.org/pubs/copyrt.htm#gsa to contact GSA Copyright not claimed on content prepared wholly by U.S. government employees within scope of their employment. Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in subsequent works and to make unlimited copies of items in GSA's journals for noncommercial use in classrooms to further education and science. This file may not be posted to any Web site, but authors may post the abstracts only of their articles on their own or their organization's Web site providing the posting includes a reference to the article's full citation. GSA provides this and other forums for the presentation of diverse opinions and positions by scientists worldwide, regardless of their race, citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect official positions of the Society. Notes © 2009 Geological Society of America Downloaded from fieldguides.gsapubs.org on June 1, 2012 The Geological Society of America Field Guide 15 2009 The post-Mazama northwest rift zone eruption at Newberry Volcano, Oregon Daniele Mckay* Department of Geological Sciences, 1272 University of Oregon, Eugene, Oregon 97403-1272, USA Julie M.
    [Show full text]
  • Overview for Geologic Field-Trip Guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon
    Overview for Geologic Field-Trip Guides to Mount Mazama, Crater Lake Caldera, and Newberry Volcano, Oregon Scientific Investigations Report 2017–5022–J U.S. Department of the Interior U.S. Geological Survey Cover (top photo): View east-northeast from Garfield Peak on the south rim of Crater Lake caldera. Peak on skyline is 8,929 feet (2,722 meters) Mount Scott, an ~420 thousand years before present (ka) dacite stratovolcano considered to be part of Mount Mazama, the volcano that collapsed during the caldera-forming eruption ~7,700 years ago. The caldera walls in this view expose Mazama lava flows and fragmental deposits from as old as ~400 ka at Phantom Cone, adjacent to tiny Phantom Ship island, to as young as ~27 ka at Redcloud Cliff, the V-shaped face at the top of the wall left of center. The beheaded glacial valley of Kerr Notch, the low point on the caldera rim, is seen between Phantom Ship and Mount Scott. Photograph by Carly McLanahan. Cover (bottom photo): Newberry Volcano, Oregon, is the largest volcano in the Cascades volcanic arc. This north-facing view taken from the volcano’s peak, Paulina Peak (elevation 7,984 feet), encompasses much of the volcano’s 4-by-5-milewide central caldera, a volcanic depression formed in a powerful explosive eruption about 75,000 years ago. The caldera’s two lakes, Paulina Lake (left) and the slightly higher East Lake (right), are fed in part by active hot springs heated by molten rock (magma) deep beneath the caldera. The Central Pumice Cone sits between the lakes.
    [Show full text]
  • Geology of the Northern Part of the Southeast Three Sisters
    AN ABSTRACT OF THE THESIS OF Karl C. Wozniak for the degree of Master of Science the Department cf Geology presented on February 8, 1982 Title: Geology of the Northern Part of the Southeast Three Sisters Quadrangle, Oregon Redacted for Privacy Abstract approved: E. M. Taylorc--_, The northern part of the Southeast Three Sisters quadrangle strad- dles the crest of the central High Cascades of Oregon. The area is covered by Pleistocene and Holocene volcanic and volcaniclastic rocks that were extruded from a number of composite cones, shield volcanoes, and cinder cones. The principal eruptive centers include Sphinx Butte, The Wife, The Husband, and South Sister volcanoes. Sphinx Butte, The Wife, and The Husband are typical High Cascade shield and composite vol- canoes whose compositions are limited to basalt and basaltic andesite. South Sister is a complex composite volcano composed of a diverse assem- blage of rocks. In contrast with earlier studies, the present investi- gation finds that South Sister is not a simple accumulation of andesite and dacite lavas; nor does the eruptive sequence display obvious evolu- tionary trends or late stage divergence to basalt and rhyolite. Rather, the field relations indicate that magmas of diverse composition have been extruded from South Sister vents throughout the lifespan of this volcano. The compositional variation at South Sister is. atypical of the Oregon High Cascade platform. This variation, however, represents part of a continued pattern of late Pliocene and Pleistocene magmatic diver- sity in a local region that includes Middle Sister, South Sister, and Broken Top volcanoes. Regional and local geologic constraints combined with chemical and petrographic criteria indicate that a local subcrustal process probably produced the magmas extruded fromSouth Sister, whereas a regional subcrustal process probably producedthe magmas extruded from Sphinx Butte, The Wife, and The Husband.
    [Show full text]
  • High Desert Region Around Bend, Oregon by Lee Foster
    High Desert Region Around Bend, Oregon by Lee Foster Beauty of nature in an alpine setting and diverse outdoor sports attract visitors to the Bend region of Central Oregon. Perusing natural beauty is the most universal pleasure here. Snow-capped mountains, pristine lakes, white-water rivers, and pine forests abound. At any time, the wilderness scenery is striking, with one of the dominant peaks, Mt. Bachelor, Broken Top, and the Sisters, usually present on your horizon. The main natural imprint on the land is a black volcanic presence. For the geology enthusiast, the Lava Lands Visitor Center explains the historic volcanic flows that form a stark legacy. Lava Butte is a 500-foot-high cinder cone, a silent reminder of past volcanic upheavals. A Rockhound Pow-Wow gathers amateur geologists here each July. Since opening in 1982, the High Desert Museum, south of Bend, has emerged as the most important nature interpretive effort in the state. (The High Desert Museum at Bend parallels Tucson’s Arizona-Sonora Desert Museum.) The raptor exhibit alone is worth the visit, putting you as close as you may ever get to a great horned owl, a red-tailed hawk, and an American kestrel. Foremost among the outdoor sports here is skiing at Mt. Bachelor. An extremely long ski season, both for alpine and nordic skiing, lasts into summer. The high- elevation chair lift to the top of Bachelor is popular also with non-skiers who seek an inspiring view of the region. In summer, hikers and campers depart from Bend for the nearby wilderness areas.
    [Show full text]
  • Hydrogeology of the Mckinney Butte Area: Sisters, Oregon
    Portland State University PDXScholar Dissertations and Theses Dissertations and Theses 1-1-2011 Hydrogeology of the McKinney Butte Area: Sisters, Oregon Joshua Andrew Hackett Portland State University Follow this and additional works at: https://pdxscholar.library.pdx.edu/open_access_etds Let us know how access to this document benefits ou.y Recommended Citation Hackett, Joshua Andrew, "Hydrogeology of the McKinney Butte Area: Sisters, Oregon" (2011). Dissertations and Theses. Paper 371. https://doi.org/10.15760/etd.371 This Thesis is brought to you for free and open access. It has been accepted for inclusion in Dissertations and Theses by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible: [email protected]. Hydrogeology of the McKinney Butte Area: Sisters, Oregon by Joshua Andrew Hackett A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Geology: Geohydrology Thesis Committee: Robert B. Perkins, Chair Michael Cummings Kenneth Lite, Jr. Portland State University ©2011 Abstract McKinney Butte, a late Tertiary andesite vent and flow complex, is located near the town of Sisters, Oregon, in the upper Deschutes Basin, and is situated along the structural trend that forms the eastern margin of the High Cascades graben (Sisters fault zone and Green Ridge). Rapid development and over appropriated surface water resources in this area have led to an increased dependence upon groundwater resources. A primary concern of resource managers is the potential impact of expanding groundwater use on stream flows and spring discharge. Two sets of springs (McKinney Butte Springs and Camp Polk Springs) discharge to Whychus Creek along the east flank of McKinney Butte, and during low-flow conditions supply a substantial component of the total flow in the creek.
    [Show full text]