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Geologic Map of the Central San Juan Caldera Cluster, Southwestern Colorado by Peter W
Geologic Map of the Central San Juan Caldera Cluster, Southwestern Colorado By Peter W. Lipman Pamphlet to accompany Geologic Investigations Series I–2799 dacite Ceobolla Creek Tuff Nelson Mountain Tuff, rhyolite Rat Creek Tuff, dacite Cebolla Creek Tuff Rat Creek Tuff, rhyolite Wheeler Geologic Monument (Half Moon Pass quadrangle) provides exceptional exposures of three outflow tuff sheets erupted from the San Luis caldera complex. Lowest sheet is Rat Creek Tuff, which is nonwelded throughout but grades upward from light-tan rhyolite (~74% SiO2) into pale brown dacite (~66% SiO2) that contains sparse dark-brown andesitic scoria. Distinctive hornblende-rich middle Cebolla Creek Tuff contains basal surge beds, overlain by vitrophyre of uniform mafic dacite that becomes less welded upward. Uppermost Nelson Mountain Tuff consists of nonwelded to weakly welded, crystal-poor rhyolite, which grades upward to a densely welded caprock of crystal-rich dacite (~68% SiO2). White arrows show contacts between outflow units. 2006 U.S. Department of the Interior U.S. Geological Survey CONTENTS Geologic setting . 1 Volcanism . 1 Structure . 2 Methods of study . 3 Description of map units . 4 Surficial deposits . 4 Glacial deposits . 4 Postcaldera volcanic rocks . 4 Hinsdale Formation . 4 Los Pinos Formation . 5 Oligocene volcanic rocks . 5 Rocks of the Creede Caldera cycle . 5 Creede Formation . 5 Fisher Dacite . 5 Snowshoe Mountain Tuff . 6 Rocks of the San Luis caldera complex . 7 Rocks of the Nelson Mountain caldera cycle . 7 Rocks of the Cebolla Creek caldera cycle . 9 Rocks of the Rat Creek caldera cycle . 10 Lava flows premonitory(?) to San Luis caldera complex . .11 Rocks of the South River caldera cycle . -
To the D.Irector of the Bureau of Land Management NM State Office April
To the D.irector of the Bureau of Land Management NM State Office April 28, 2019 BLM, NMSO SANTA FE RECEIVED BLM New Mexico State Office APR,;~,5o 2019 Attention: State Director PAID RECEIPT # _ 301 Dinosaur Trail Santa Fe, NM 87508 We are writing to ask you to stop the proposed lease sale of lands near Chaco Canyon slated for June 2019. Fossil fuel exploration on these sites is a threat to the people who live on the surrounding land and to Chaco Canyon, New Mexico's crown jewel and the ancestral home of Native Americans of the Southwest. Protection from oil and gas activity around Chaco Canyon is essential to protecting New Mexico's uhique history, environment and vital resources. Instead of continuing to develop fossil fuels on our public lands, we need to make a just transition to renewable energy to create ways to engage in environmentally sustainable, as well as culturally appropriate, economic development. We ask you to cancel the lease sale of parcels: NM-201906-012-24; 26-46; 48-51 and NM-201906-025 & 47 to protect Chaco Canyon and the Greater Chaco Region from oil and gas activities that could destroy this designated World Heritage Site, a landmark like no other on Earth. Attached: 11,962 requests for your attention to this matter. First Name Last Name City State Zip Code Daniel Helfman 6301 MAURY HOLW TX 78750-8257 Kenneth Ruby 18Tiffany Road NH 03079 Crystal Newcomer 2350 Dusty Ln PA 17025 Timothy Post 1120 PacificAve KS 66064 Marlena Lange 23 RoyceAve NY 10940-4708 Victoria Hamlin 3145 MaxwellAve CA 94619 L. -
Sunlight Peak Class 4 Exposure: Summit Elev
Sunlight Peak Class 4 Exposure: Summit Elev.: 14,066 feet Trailhead Elev.: 11,100 feet Elevation Gain: 3,000' starting at Chicago Basin 6,000' starting at Needleton RT Length: 5.00 miles starting at Chicago Basin 19 miles starting at Needleton Climbers: Rick, Brett and Wayne Crandall; Rick Peckham August 8, 2012 I’ve been looking at climbing reports to Sunlight Peak for a few years – a definite notch up for me, so the right things aligned and my son Brett (Class 5 climber), brother Wayne (strong, younger but this would be his first fourteener success) and friend Rick Peckham from Alaska converged with me in Durango to embark on a classic Colorado adventure with many elements. We overnighted in Durango, stocking up on “essential ingredients” for a two-night camp in an area called the Chicago Basin, which as you will see, takes some doing to get to. Durango, founded in 1880 by the Denver & Rio Grande Railway company, is now southwest Colorado’s largest town, with 15,000 people. Left to right: Brett, Rick, Wayne provisioning essentials. Chicago Basin is at the foot of three fourteeners in the San Juan range that can only be reached by taking Colorado’s historic and still running (after 130 years) narrow-gauge train from Durango to Silverton and paying a fee to get off with back-pack in the middle of the ride. Once left behind, the next leg of the excursion is a 7 mile back-pack while climbing 3000’ vertical feet to the Basin where camp is set. -
Colorado Fourteeners Checklist
Colorado Fourteeners Checklist Rank Mountain Peak Mountain Range Elevation Date Climbed 1 Mount Elbert Sawatch Range 14,440 ft 2 Mount Massive Sawatch Range 14,428 ft 3 Mount Harvard Sawatch Range 14,421 ft 4 Blanca Peak Sangre de Cristo Range 14,351 ft 5 La Plata Peak Sawatch Range 14,343 ft 6 Uncompahgre Peak San Juan Mountains 14,321 ft 7 Crestone Peak Sangre de Cristo Range 14,300 ft 8 Mount Lincoln Mosquito Range 14,293 ft 9 Castle Peak Elk Mountains 14,279 ft 10 Grays Peak Front Range 14,278 ft 11 Mount Antero Sawatch Range 14,276 ft 12 Torreys Peak Front Range 14,275 ft 13 Quandary Peak Mosquito Range 14,271 ft 14 Mount Evans Front Range 14,271 ft 15 Longs Peak Front Range 14,259 ft 16 Mount Wilson San Miguel Mountains 14,252 ft 17 Mount Shavano Sawatch Range 14,231 ft 18 Mount Princeton Sawatch Range 14,204 ft 19 Mount Belford Sawatch Range 14,203 ft 20 Crestone Needle Sangre de Cristo Range 14,203 ft 21 Mount Yale Sawatch Range 14,200 ft 22 Mount Bross Mosquito Range 14,178 ft 23 Kit Carson Mountain Sangre de Cristo Range 14,171 ft 24 Maroon Peak Elk Mountains 14,163 ft 25 Tabeguache Peak Sawatch Range 14,162 ft 26 Mount Oxford Collegiate Peaks 14,160 ft 27 Mount Sneffels Sneffels Range 14,158 ft 28 Mount Democrat Mosquito Range 14,155 ft 29 Capitol Peak Elk Mountains 14,137 ft 30 Pikes Peak Front Range 14,115 ft 31 Snowmass Mountain Elk Mountains 14,099 ft 32 Windom Peak Needle Mountains 14,093 ft 33 Mount Eolus San Juan Mountains 14,090 ft 34 Challenger Point Sangre de Cristo Range 14,087 ft 35 Mount Columbia Sawatch Range -
Steve Mccutcheon Collection, B1990.014
REFERENCE CODE: AkAMH REPOSITORY NAME: Anchorage Museum at Rasmuson Center Bob and Evangeline Atwood Alaska Resource Center 625 C Street Anchorage, AK 99501 Phone: 907-929-9235 Fax: 907-929-9233 Email: [email protected] Guide prepared by: Sara Piasecki, Archivist TITLE: Steve McCutcheon Collection COLLECTION NUMBER: B1990.014 OVERVIEW OF THE COLLECTION Dates: circa 1890-1990 Extent: approximately 180 linear feet Language and Scripts: The collection is in English. Name of creator(s): Steve McCutcheon, P.S. Hunt, Sydney Laurence, Lomen Brothers, Don C. Knudsen, Dolores Roguszka, Phyllis Mithassel, Alyeska Pipeline Services Co., Frank Flavin, Jim Cacia, Randy Smith, Don Horter Administrative/Biographical History: Stephen Douglas McCutcheon was born in the small town of Cordova, AK, in 1911, just three years after the first city lots were sold at auction. In 1915, the family relocated to Anchorage, which was then just a tent city thrown up to house workers on the Alaska Railroad. McCutcheon began taking photographs as a young boy, but it wasn’t until he found himself in the small town of Curry, AK, working as a night roundhouse foreman for the railroad that he set out to teach himself the art and science of photography. As a Deputy U.S. Marshall in Valdez in 1940-1941, McCutcheon honed his skills as an evidential photographer; as assistant commissioner in the state’s new Dept. of Labor, McCutcheon documented the cannery industry in Unalaska. From 1942 to 1944, he worked as district manager for the federal Office of Price Administration in Fairbanks, taking photographs of trading stations, communities and residents of northern Alaska; he sent an album of these photos to Washington, D.C., “to show them,” he said, “that things that applied in the South 48 didn’t necessarily apply to Alaska.” 1 1 Emanuel, Richard P. -
Direct Protection Areas
Thorn Junction Benbow Knob, The 6486 ' EEL Panther Peak R, S FK Windy Mountain Shasta-Trinity 1862 ' 7081 ' Thorn E Vinegar Peak Schofield Peak Six Rivers E L 6549 ' 1992 ' R FK , Little Butte , M M N R Booth Knoll EEL A F B K 5632 ' E T 2427 ' A T Shelter Cove R O C L HUMBOLDT R E Walker Butte K Hopkins Peak , E S R K F 2404 ' A 6749 ' K Reed Mountain W Round Mountain E Sugarloaf Mountain Chamisal Mountain Whitethorn Beall Place 3101 ' R A E L Pilot Peak K 5000 ' L 7367 ' Harvey Peak E A Big Butte R 2598 ' E C Brush Mountain , 4092 ' R 5922 ' M 7361 ' 4200 ' F Island Mountain K D CR Linn, Mount Linn Mount Lake Mountain , N EA IL Moose Peak F F G 8092 ' 2467 ' 3851 ' K O TRINITY 1787 ' LM Oven Lid BA South Yolla Bolly South Yolla Bolly Mountains 6662 ' E Island Mountain L Solomon Peak 2460 ' D 3286 ' 8092 ' E Cooks Valley 7581 ' R C Horse Ranch Peak R, N Twin Peaks FK K 4156 ' F Nielson Place S 7403 ' , R EEL R, L N FK E E Hammerhorn Mountain 7563 ' Noble Butte Andersonia 2435 ' EE L R, Little Butte S FK, E Wildhorse Peak BR 1800 ' R 3564 ' C Piercy Table Rock IS H R F AN C Ramsey 3360 ' DI Island Mountain Delmonico Place IN 3847 ' Bald Mountain Bell Springs Mountain 3938 ' 3861 ' Mina EE L R, M FK Bell Springs R Ball Rock C S Griffin Place 6663 ' Camel Rock E Castle Peak M 3837 ' O 6216 ' Steuben Place High Tip E H E T L R 372 ' , S Mitchell Place F R K L Cold Springs Workcenter Kenny E E Red Rock 6050 ' TEHAMA Red Mountain Little Baldy Beaver Glade Fire Station 4095 ' 3646 ' Pratt Place Buck Mountain Leech Lake Mountain Ball Mountain -
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. -
Profiles of Colorado Roadless Areas
PROFILES OF COLORADO ROADLESS AREAS Prepared by the USDA Forest Service, Rocky Mountain Region July 23, 2008 INTENTIONALLY LEFT BLANK 2 3 TABLE OF CONTENTS ARAPAHO-ROOSEVELT NATIONAL FOREST ......................................................................................................10 Bard Creek (23,000 acres) .......................................................................................................................................10 Byers Peak (10,200 acres)........................................................................................................................................12 Cache la Poudre Adjacent Area (3,200 acres)..........................................................................................................13 Cherokee Park (7,600 acres) ....................................................................................................................................14 Comanche Peak Adjacent Areas A - H (45,200 acres).............................................................................................15 Copper Mountain (13,500 acres) .............................................................................................................................19 Crosier Mountain (7,200 acres) ...............................................................................................................................20 Gold Run (6,600 acres) ............................................................................................................................................21 -
Uncompahgre Wilderness Trails
TH Little Cimarron TH Big WARNING: Do not use this map for wilderness Blue navigation. It is intended for general reference 864 UNCOMPAHGRE 229 only. Detailed maps are available at the locations 863 East shown on the back panel. Fork 867 TH Fall WILDERNESS 858 861 TH Creek 868 149 Little Grand Mesa, Uncompahgre, 232 Elk Fall Creek TH 868 Little Cimarron River & Gunnison National Forests East Fork Cimarron River A 254 231 Straley 03/14/11 12 219 Middle Fork Cimarron River West Fork Cimarron River Owl Creek 233 Pass Sheep Mountain 253 Stealey 219 228 Mountain Big Blue Creek Middle TH Fork 244 860 218 Slide Courthouse Pinnacle 229 Lake Mountain 218 Ridge Dunsinane Elk Creek 144 Mountain 218 857 Precipice 211 Peak 243 Dixie 550 258 Ridge Porphory 227 Basin Silver Jack 232 Mine Ruins 235 212 Silver Mountain 216 216 234 TH Independence 138 226 231 228 233 137 Cutler Redcliff 244 Peak TH 236 235 216 Coxcomb Peak 227 232 872 220 236.3A 217 132 142 Uncompahgre Peak Larson 14,309 Ft Lakes Matterhorn 135 228 239 Lake Fork Gunnison River Peak 871 Cow Creek Uncompahgre 236 B Wetterhorn Wetterhorn 239 TH 149 Peak Basin Peak 233 14 14,015 Ft 205 233 233 226 Crystal Peak 256 235 136 Crystal Uncompahgre River 214 Bighorn Larson 241 Ridge 245 Crystal Broken 238 TH North Hill Lake Bridge of 236 215 Heaven 877 226 TH Matterhorn USFS 140 Lake City 1 Mile Blackwall BLM Mountain Ouray 870 215 20 Alpine Loop USFS Capitol City Scenic Byway Primary Highway Summit Over 13,000 Feet Wildhorse BLM (Site) Peak Improved Road Stock May Be Restricted Hensen Creek A1 Dallas A2 Courthouse Mountain A3 Sheep Mountain Primitive Road TH Trailhead TH Bear 241 A4 Alpine Plateau Creek B1 Ouray National Forest Trail 235 National Forest Trail Sunshine B2 Wetterhorn Peak American Darley Varden Flats Mountain B3 Uncompahgre Peak NOTICE: Sheep grazing is permitted in the Uncompahgre Wilderness, Mountain B4 Lake City and livestock protection dogs may be encountered near bands of Forest Boundary 118 National Forest Road sheep. -
Awesome Infographic
[ ALIVE [ Article MOST LIKELY TO HAVE A HIGHWArticleAY TO THEALIVE TOP TALLEST Pikes Peak (near Colorado Springs) and Mt. Evans A FEW INTERESTING (near Idaho Springs) both have incredibly scenic Mt. Elbert at 14,440 and winding roads that go to the tippy top. WHAT IS A OURTEENER? southwest of Leadville MOST POSTCARDED A peak that rises 14,000 feet or more above sea level. Colorado is PEAKS AMONG THE home to more of these than any other state. (Alaska has 22; California Thousands k eep them clean sum e one on pr that Bef VE NO TRACEafter has 12; Washington has 1) xtr CROWD staying epa WHO DO the subject, r eme or SHORTEST Sunshine Peak at 14,001 LEA wildlife. mit y c ou ra limbinge you go skip you gr ar and Mt.Mar Snef tion. near Lake City aphed epeaks likely in bef ha climb weather, oon P ve on by or Pick See e the these Mt. Bierstadt near Idaho packing EASIEST TO HIKE designated eak near our the most photo a esear and fternoon lev up YOU THINK Springs is often recognized as the perfect lnt.org fels near head ping up a mountainside, el peaks fourteener ch yourone starter fourteener, followed by Grays Peak in tact for of out the state. Aspen up fitness to tackle,of and Torreys Peak near lightning c for Our an tr anything earl the Keystone. r ails - oute and mak ay be -HAVE ITEMS more s y plentiful MUST those NUMBER OF FOURTEENERS Several vie for each and — danger HARDEST Layers of clothing storms this title — Capitol and YOU inf you r who Peak, Little Bear, ormation.especting year guide ous pr Hiking shoes be re pack epa e sur Mt. -
Forest Wide Hazardous Tree Removal and Fuels Reduction Project
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Colorado 1 (! 1 27 Y S.P
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