Emergency Regulations for Chapter W-0, Chapter W-2, and Chapter W-5 DATE: March 28, 2020
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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 . -
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 -
EVERYONE WHO HAS COMPLETED the COLORADO FOURTEENERS (In Order of Date of Submittal) ` First Name M.I
EVERYONE WHO HAS COMPLETED THE COLORADO FOURTEENERS (In Order of Date of Submittal) ` First Name M.I. Last Name First Peak Month Year Last Peak Month Year 1. Carl Blaurock (#1 & #2 tie) Pikes Peak 1911 1923 2. William F. Ervin (#1 & #2 tie) Pikes Peak 1911 1923 3. Albert Ellingwood 4. Mary Cronin Longs Peak 1921 Sep 1934 5. Carl Melzer 1937 6. Robert B. Melzer 1937 7. Elwyn Arps Eolus, Mt. 1920 Jul 1938 8. Joe Merhar Pyramid Peak Aug 1938 9. O. P. Settles Longs Peak 1927 Jul 1939 10. Harry Standley Elbert, Mt. 1923 Sep 1939 11. Whitney M. Borland Pikes Peak Jun 1941 12. Vera DeVries Longs Peak 1936 Kit Carson Peak Aug 1941 13. Robert M. Ormes Pikes Peak Capitol Peak Aug 1941 14. Jack Graham Sep 1941 15. John Ambler Sep 1943 16. Paul Gorham Pikes Peak 1926 Aug 1944 17. Ruth Gorham Grays Peak 1933 Aug 1944 18. Henry Buchtel Longs Peak 1946 19. Herb Hollister Longs Peak 1927 Jul 1947 20. Roy Murchison Longs Peak 1908 Aug 1947 21. Evelyn Runnette Longs Peak 1931 Uncompahgre Peak Sep 1947 22. Marian Rymer Longs Peak 1926 Crestones Sep 1948 23. Charles Rymer Longs Peak 1927 Crestones Sep 1948 24. Nancy E. Nones (Perkins) Quandary 1937 Eolus, Mt. Sep 1948 25. John Spradley Longs Peak 1943 Jul 1949 26. Eliot Moses Longs Peak 1921 Jul 1949 27. Elizabeth S. Cowles Lincoln, Mt. Sep 1932 Wetterhorn Peak Sep 1949 28. Dorothy Swartz Crestones Aug 1950 29. Robert Swartz Bross, Mt. 1941 Crestones Aug 1950 30. -
Eagle's View of San Juan Mountains
Eagle’s View of San Juan Mountains Aerial Photographs with Mountain Descriptions of the most attractive places of Colorado’s San Juan Mountains Wojtek Rychlik Ⓒ 2014 Wojtek Rychlik, Pikes Peak Photo Published by Mother's House Publishing 6180 Lehman, Suite 104 Colorado Springs CO 80918 719-266-0437 / 800-266-0999 [email protected] www.mothershousepublishing.com ISBN 978-1-61888-085-7 All rights reserved. No part of this book may be reproduced without permission in writing from the copyright owner. Printed by Mother’s House Publishing, Colorado Springs, CO, U.S.A. Wojtek Rychlik www.PikesPeakPhoto.com Title page photo: Lizard Head and Sunshine Mountain southwest of Telluride. Front cover photo: Mount Sneffels and Yankee Boy Basin viewed from west. Acknowledgement 1. Aerial photography was made possible thanks to the courtesy of Jack Wojdyla, owner and pilot of Cessna 182S airplane. Table of Contents 1. Introduction 2 2. Section NE: The Northeast, La Garita Mountains and Mountains East of Hwy 149 5 San Luis Peak 13 3. Section N: North San Juan Mountains; Northeast of Silverton & West of Lake City 21 Uncompahgre & Wetterhorn Peaks 24 Redcloud & Sunshine Peaks 35 Handies Peak 41 4. Section NW: The Northwest, Mount Sneffels and Lizard Head Wildernesses 59 Mount Sneffels 69 Wilson & El Diente Peaks, Mount Wilson 75 5. Section SW: The Southwest, Mountains West of Animas River and South of Ophir 93 6. Section S: South San Juan Mountains, between Animas and Piedra Rivers 108 Mount Eolus & North Eolus 126 Windom, Sunlight Peaks & Sunlight Spire 137 7. Section SE: The Southeast, Mountains East of Trout Creek and South of Rio Grande 165 9. -
Mountain Biking
THE BEST OF COLORADO 1 he old and the new, the rustic and the sophisticated, the wild and the refined—all of these experiences exist Tpractically side by side in Colorado, amid what is argu- ably the most breathtaking mountain scenery in America. Colorado’s booming cities—Boulder, Colorado Springs, and Denver—and its admittedly somewhat glitzy resorts—especially Vail and Aspen—offer much of the comfort and culture of New York or Los Angeles but at a slower, more relaxed pace. Throughout the state, you’ll also find testa- ments to another time, when life was simpler but rougher and only the strong survived: historic Victorian mansions, working turn-of-the-20th- century steam trains, thousand-year-old adobe-and-stone villages, and authentic Old West towns complete with false-fronted saloons and dusty streets. Enos Mills, an early-20th-century environmentalist and one of the driv- ing forces behind the creation of Rocky Mountain National Park, said that knowledge of nature is the basis of wisdom. So climb on a horse or moun- tain bike, take a hike or a raft trip—or simply sit back and gaze at the mountains. (Atop Pikes Peak, you’ll see what inspired Katharine Lee Bates to pen the lyrics to “America the Beautiful.”) Whatever you do, though, don’t stay indoors. Colorado truly comes alive for those who ven- ture outdoors—to the towering Rocky Mountains, the western canyons, or the broad eastern plains. The following are what I consider Colorado’s best experiences—high- lights that will help you begin planning your trip. -
Dim Ttdne Ymshed States
ffl o Dim ttDne ymSHed States The information in this booklet was compiled to answer inquiries received by the U.S. Geological Survey from students; teachers; writers; editors; pub lishers of encyclopedias, almanacs, and other reference books; and people in many other fields of work. The elevations of features and distances between points in the United States were determined from surveys and topographic maps of the U.S. Geological Survey or obtained from other sources. In most cases, the elevations were determined from surveys and from 1:24,000- and 1:25,000-scale, 7.5-minute topographic quadrangle maps. In Alaska, infor mation was taken from 1:63,360-scale, 15-minute topographic quadrangle maps. In a few cases, data were obtained from older, 1:62,500-scale, 15-minute maps; these maps are being replaced with larger-scale 7.5-minute coverage. Further information about U.S. Geological Survey products can be obtained from: U.S. Geological Survey, Earth Science In formation Center, 507 National Center, Reston, VA 22092 or phone 703-860-6045. Elevations of the 50 Largest Cities (by population, 1980 Census) City State Rank High Low feet feet New York New York 1 410 Sea Level Chicago Illinois 2 673 1 579 Los Angeles California 3 5,074 Sea Level Philadelphia Pennsylvania 4 441 Sea Level Houston Texas 5 83 Sea Level Detroit Michigan 6 672 1 575 Dallas Texas 7 686 390 San Diego California 8 823 Sea Level Phoenix Arizona 9 1,160 1,058 Baltimore Maryland 10 489 Sea Level San Antonio Texas 11 1,000 505 Indianapolis Indiana 12 845 664 San Francisco California 13 934 Sea Level Memphis Tennessee 14 335 195 Washington D.C. -
Difficulty4 Fourteener Name Elev in Feet Trails Illust Map USGS 7.5
Fourteener Elev in Trails Illust USGS Lat Long Dist3 Vert3 Difficulty4 Name Feet Map 7.5' Topo (RT) Gain Grade Class Antero, Mt 14,269 130 E Mt Antero & St Elmo 38° 40' 106° 15' 13 5200 C 2 Belford, Mt 14,197 129 W Mt Harvard 38° 58' 106° 22' 7 4500 B 2 Bierstadt, Mt 14,060 104 E Mt Evans 39° 35' 105° 40' 6.5 2800 A 2 Blanca Peak 14,345 138 S Blanca Peak & Twin Peaks 37° 35' 105° 29' 14 5000 D 2 Bross, Mt 14,172 109 E Alma 39° 20' 106° 06' 5 2900 A 2 Cameron, Mt2 14,238 109 E Alma 39° 21' 106° 07' 4.5 3000 A 2 Capitol Peak 14,130 128 E Capitol Peak 39° 09' 107° 05' 15 4800 D 3 E Castle Peak 14,265 127 W Hayden Peak 39° 01' 106° 52' 10 4400 C 2 Challenger Point2 14,081 138 S Crestone Peak 37° 59' 105° 36' 10 5400 C 3 Columbia, Mt 14,073 129 W Mt Harvard 38° 54' 106° 18' 11 4100 C 2 Conundrum Peak2 14,022 127 W Hayden Peak 39° 01' 106° 52' 10 4200 C 3 Crestone Needle 14,197 138 S Crestone Peak 37° 58' 105° 35' 18 5400 D 3 E Crestone Peak 14,294 138 S Crestone Peak 37° 58' 105° 35' 20 6700 D 3 E Culebra Peak 14,047 N/A Culebra Peak & El Valle Creek 37° 07' 105° 11' 4 2500 A 2 Democrat, Mt 14,148 109 W Climax & Alma 39° 20' 106° 08' 7 3500 B 2 El Diente Peak 14,159 141 W Delores Peak & Mt Wilson 37° 50' 108° 00' 13.5 4800 D 3 Elbert, Mt 14,433 127 E Mt Elbert & Mt Massive 39° 07' 106° 27' 8.5 4700 C 1 Ellingwood Point 14,042 138 S Blanca Peak & Twin Peaks 37° 35' 105° 30' 13.5 4700 D 3 Eolus, Mt 14,083 140 W Columbine Pass & Mnt View Crest 37° 37' 107° 37' 18.5 6000 D 3 Evans, Mt 14,264 104 E Mt Evans 39° 35' 105° 39' 1 1500 A 2 Grays Peak -
Estimated Hiking Use on Colorado's 14Ers
Estimated Hiking Use on Colorado’s 14ers Total Hiker Use Days: 415,000 (2020 Data) Front Range Best Est: 113,500 Mosquito Range Best Est: 49,000 Longs Peak 15,000-20,000^ Mount Lincoln 25,000-30,000* Pikes Peak 15,000-20,000* Mount Bross Torreys Peak 30,000-35,000* Mount Democrat Grays Peak Mount Sherman 15,000-20,000* Mount Evans 7,000-10,000 Mount Bierstadt 35,000-40,000* Elk Mountains Best Est: 11,500 Castle Peak 3,000-5,000* Tenmile Range Best Est: 49,000 Maroon Peak 1,000-3,000 Quandary Peak 45,000-50,000* Capitol Peak 1,000-3,000 Snowmass Mountain 1,000-3,000 Pyramid Peak 1,000-3,000 Sawatch Range Best Est: 110,000 Mount Elbert 20,000-25,000* Mount Massive 7,000-10,000 Sangre de Cristo Range Best Est: 13,000 Mount Harvard 5,000-7,000 Blanca Peak 1,000-3,000* La Plata Peak 5,000-7,000* Ellingwood Point Mount Antero 3,000-5,000 Crestone Peak 1,000-3,000 Mount Shavano 7,000-10,000 Crestone Needle 1,000-3,000 Tabegauche Peak Kit Carson Peak 1,000-3,000 Mount Belford 7,000-10,000 Challenger Point Mount Oxford Humboldt Peak 1,000-3,000 Mount Princeton 7,000-10,000* Culebra Peak <1,000 Mount Yale 7,000-10,000 Mount Lindsey 1,000-3,000* Mount Columbia 3,000-5,000 Little Bear Peak 1,000-3,000 Missouri Mountain 5,000-7,000 Mt. -
Geologic Map of the Cochetopa Park and North Pass Calderas, Northeastern San Juan Mountains, Colorado
Geologic Map of the Cochetopa Park and North Pass Calderas, Northeastern San Juan Mountains, Colorado By Peter W. Lipman Pamphlet to accompany Scientific Investigations Map 3123 Cochetopa Dome, 11,132 ft Razor Creek Dome (intracaldera rhyolite flows) 11,520 ft (northwest caldera rim) Green Mountain,10,930 ft (northeast caldera rim) NE-trending tongue, Cochetopa Canyon Nelson Mountain Tuff Caldera-filling tuffs and volcaniclastic sedimentary rocks Panoramic view of Cochetopa Dome (sequence of rhyolitic lava flows within caldera) and north walls of Cochetopa Park caldera, viewed from south. Cloud-obscured northwest caldera rim, at left of image, is Sawtooth Mountain (12,147 ft); northeast caldera rim is marked by Razor Creek Dome and Green Mountain on right side. Light-colored eroding outcrops in foreground are weakly indurated tuff and volcaniclastic sedimentary fill of the caldera basin. 2012 U.S. Department of the Interior U.S. Geological Survey This page intentionally left blank CONTENTS Introduction.....................................................................................................................................................1 Ignimbrite caldera cycles and eruptive processes .................................................................................1 Methods of study ...........................................................................................................................................2 Regional framework ......................................................................................................................................3 -
La Plata County Road Names
La Plata County Road Names Road Name and Location Aaron Drive Alto Road MidWay Acres (4200 blk Hwy 550S; w side) Silver Mesa Ranch (2200 blk CR 513) Abajo Road Amber Way Silver Mesa Ranch (2200 blk CR 513) Pegasus (7100 blk CR 203-undeveloped) Ada Lane (not used yet) Anasazi Place Grandview Height Sub (29000 blk Hwy 160E;s side) San Juan Vista Est (10000 blk Hwy 550 S) Adobe Drive Angels Drive Long Hollow Ranch (14000 blk CR 136) Forest Lakes (6500 blk CR 501; e side) Adobe House Road Angus Road Kline - 250 blk CR 122 Pinon Mesa Ranches (8000 blk CR 310) Air Park Drive Animas Place Animas Airpark (11300 blk CR 213; w side) City of Dgo (off Riverview) Airport Parkway (proposed) Animas River Road Airport Business Park (proposed) 601 Airport Rd Animas River Ranches (2370 blk CR 213) Airport Road Animas Springs Road aka CR 309 Animas Springs (35000 blk Hwy 550; e side) Ajax Place (proposed) Animas View Drive Village at Silverpick (48475 Hwy 550N) City of Dgo (3800 blk Main Ave; old CR 203) Alamo Drive Animas Village Drive City of Dgo (east of Main, off 22nd St) City of Dgo (East Animas Village; 600 blk CR 251) Alamo Street Animosa Circle City of Dgo (between Park & W 3rd Ave) Animosa Valley (32200 blk Hwy 550; e side) Alan Road Animosa Drive 100 blk Metz Ln (175 blk CR 250; n side) Animosa Valley (32200 blk Hwy 550; e side) Albrecht Lane Anna Road Animosa Valley (175 blk Animosa Dr; n side) 3900 blk CR 311 (w side) Alce Dr/Ln/Cr (proposed) Antelope Dr NKA Jackalope Dr KP Ventures (Proposed) (900 blk CR 311) Forest Lakes Unit 3 (6500 blk CR -
Estimated Hiking Use on Colorado's 14Ers
Estimated Hiking Use on Colorado’s 14ers Total Hiker Use Days: 353,000 (2018 Data) Front Range Best Est: 107,000 Mosquito Range Best Est: 39,000 Longs Peak 15,000-20,000 Mount Lincoln 20,000-25,000* Pikes Peak 10,000-15,000* Mount Bross Torreys Peak 25,000-30,000* Mount Democrat Grays Peak Mount Sherman 15,000-20,000* Mount Evans 10,000-15,000 Mount Bierstadt 35,000-40,000# Elk Mountains Best Est: 9,000 Castle Peak 1,000-3,000* Tenmile Range Best Est: 38,000 Maroon Peak 1,000-3,000 Quandary Peak 35,000-40,000* Capitol Peak 1,000-3,000 Snowmass Mountain 1,000-3,000 Pyramid Peak 1,000-3,000 Sawatch Range Best Est: 98,000 Mount Elbert 20,000-25,000* Mount Massive 7,000-10,000^ Sangre de Cristo Range Best Est: 17,000 Mount Harvard 5,000-7,000^ Blanca Peak 1,000-3,000* La Plata Peak 5,000-7,000* Ellingwood Point Mount Antero 3,000-5,000 Crestone Peak 1,000-3,000 Mount Shavano 5,000-7,000 Crestone Needle 1,000-3,000 Tabegauche Peak Kit Carson Peak 1,000-3,000 Mount Belford 7,000-10,000^ Challenger Point Mount Oxford Humboldt Peak 3,000-5,000 Mount Princeton 5,000-7,000 Culebra Peak 1,000-3,000 Mount Yale 7,000-10,000^ Mount Lindsey 1,000-3,000* Mount Columbia 3,000-5,000^ Little Bear Peak 1,000-3,000 Missouri Mountain 3,000-5,000^ Mt. -
Flat 14Ers Individual Progress Log
Flat 14ers Individual Progress Log Name: Start Date: Completion Date: Peak: Distance: Elevation: Steps: 1 Blanca Peak 15 miles 14,345 ft 30,000 2 Capitol Peak 17 miles 14,130 ft 34,000 3 Castle Peak / Conundrum Peak* 14 miles 14,265 ft / 14,060 ft 28,000 4 Challenger Point 12 miles 14,081 ft 24,000 5 Crestone Needle 8 miles 14,197 ft 16,000 6 Crestone Peak 6.25 miles 14,294 ft 12,500 7 Culebra Peak 7 miles 14,047 ft 14,000 8 Ellingood Point 15.5 miles 14,042 ft 31,000 9 Grays Peak 7.5 miles 14,270 ft 15,000 10 Handies Peak 5.5 miles 14,048 ft 11,000 11 Humbolt Peak 7.25 miles 14,064 ft 14,500 12 Huron Peak 5.5 miles 14,003 ft 11,000 13 Kit Carson Peak 11.5 miles 14,165 ft 23,000 14 La Plata Peak 9.5 miles 14,336 ft 19,000 15 Little Bear Peak 13 miles 14,037 ft 26,000 16 Longs Peak 14 miles 14,255 ft 28,000 17 Maroon Peak / North Maroon Peak* 12 miles 14,156 ft /14,014 ft 24,000 18 Missouri Mountain 10.5 miles 14,067 ft 21,000 19 Mt Antero 13.6 miles 14,269 ft 27,000 20 Mt Belford 11 miles 14,197 ft 22,000 21 Mt Bierstadt 7 miles 14,060 ft 14,000 22 Mt Bross 9 miles 14,172 ft 18,000 23 Mt Columbia 11.5 miles 14,073 ft 23,000 24 Mt Democrat 4 miles 14,148 ft 8,000 25 Mt Elbert 9 miles 14,433 ft 18,000 www.americaonthemove.org ©2009 America On the Move Foundation, Inc.