Geology and Uranium Deposits of the Gochetopa and Marshall Pass Districts, Saguache and Gunnison Counties, Colorado

Total Page:16

File Type:pdf, Size:1020Kb

Geology and Uranium Deposits of the Gochetopa and Marshall Pass Districts, Saguache and Gunnison Counties, Colorado Geology and Uranium Deposits of the Gochetopa and Marshall Pass Districts, Saguache and Gunnison Counties, Colorado U.S. GEOLOGICAL SURVEY PRO FESS I 6N A L P A PE R 1457 AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the cur­ rent-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Sur­ vey publications released prior to the current year are listed in the most recent annual "Price and Availability List" Publications that are listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" are no longer available. Prices of reports released to the open files are given in the listing "U.S. Geological Survey Open-File Reports," updated month­ ly, which is for sale in microfiche from the U.S. Geological Survey, Books and Open-File Reports Section, Federal Center, Box 25425, Denver, CO 80225. Reports released through the NTIS may be obtained by writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS report number with inquiry. Order U.S. Geological Survey publications by mail or over the counter from the offices given below. BY MAIL OVER THE COUNTER Books Books Professional Papers, Bulletins, Water-Supply Papers, Techniques of Water-Resources Investigations, Circulars, publications of general in­ Books of the U.S. Geological Survey are available over the terest (such as leaflets, pamphlets, booklets), single copies of Earthquakes counter at the following Geological Survey Public Inquiries Offices, all & Volcanoes, Preliminary Determination of Epicenters, and some mis­ of which are authorized agents of the Superintendent of Documents: cellaneous reports, including some of the foregoing series that have gone out of print at the Superintendent of Documents, are obtainable by mail from WASHINGTON, D.C.-Main Interior Bldg., 2600 corridor, 18th and CSts.,NW. U.S. Geological Survey, Books and Open-File Reports DENVER, Colorado-Federal Bldg., Rm. 169, 1961 Stout St. Federal Center, Box 25425 LOS ANGELES, California-Federal Eldg., Rm. 7638,300 N. Denver, CO 80225 Los Angeles St. MENLO PARK, Callfornia-Bldg. 3 (Stop 533), Rm. 3128, Subscriptions to periodicals (Earthquakes & Volcanoes and 345MiddlefieldRd. Preliminary Determination of Epicenters) can be obtained ONLY from RESTON, Virginia-503 National Center, Rm. 1C402,12201 the Sunrise Valley Dr. SALT LAKE CITY, Utah-Federal Bldg., Rm. 8105,125 Superintendent of Documents South State St. Government Printing Office SAN FRANCISCO, California-Customhouse, Rm. 504,555 Washington, D.C. 20402 Battery St. SPOKANE, Washington-U.S. Courthouse, Rm. 678, West (Check or money order must be payable to Superintendent of Docu­ 920 Riverside Ave.. ments.) ANCHORAGE, Alaska-Rm. 101, 4230 University Dr. ANCHORAGE, Alaska-Federal Bldg, Rm. E-146, 701 C St. Maps For maps, address mail orders to U.S. Geological Survey, Map Distribution Maps Federal Center, Box 25286 Maps may be purchased over the counter at the U.S. Geologi­ Denver, CO 80225 cal Survey offices where books are sold (all addresses in above list) and at the following Geological Survey offices: Residents of Alaska may order maps from ROLLA, Missouri-1400 Independence Rd. Alaska Distribution Section, U.S. Geological Survey, DENVER, Colorado-Map Distribution, Bldg. 810, Federal New Federal Building - Box 12 Center 101 Twelfth Ave., Fairbanks, AK 99701 FAIRBANKS, Alaska-New Federal Bldg., 101 Twelfth Ave. Geology and Uranium Deposits of the Cochetopa and Marshall Pass Districts, Saguache and Gunnison Counties, Colorado By JERRY C. OLSON U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1457 A study of regional geologic history of two districts in which uranium deposits are related to fault zones, early Tertiary erosion surfaces, and volcanic rocks UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1988 DEPARTMENT OF THE INTERIOR DONALD PAUL HODEL, Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director Library of Congress Cataloging-in-Publication Data Olson, Jerry Chipman, 1917- Geology and uranium deposits of the Cochetopa and Marshall Pass districts, Saguache and Gunnison Counties, Colorado. (U.S. Geological Survey professional paper ; 1457) Bibliography; p. Supt. of Docs, no.: I 19.16:1457 1. Geology Colorado Saguache County. 2. Geology Colorado Gunnison County. 3. Uranium ores Colorado Saguache County. 4. Uranium ores Colorado Gunnison County. I. Title, II. Series: Geological Survey professional paper ; 1457. QE92.S24047 1988 557.88'49 86-600337 For sale by the Books and Open-File Reports Section, U.S. Geological Survey, Federal Center, Box 25425, Denver, CO 80225 Any use of trade names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. CONTENTS Page Abstract ........................... 1 Marshall Pass district ........................... 24 Introduction ....................... 2 Geologic setting ............................. 24 Previous work ................... 2 Proterozoic rocks ......................... 25 Uranium production ............. 3 Paleozoic rocks .......................... 28 Regional geology .................... 3 Cochetopa district ................... 6 Tertiary volcanic and intrusive rocks ........ 30 Geologic setting ................. 6 Faults .................................. 32 Proterozoic rocks ............. 6 Paleotopography and paleodrainage ............ 33 Mesozoic rocks .............. 7 Uranium deposits ............................ 33 Tertiary volcanic rocks ........ 10 Pitch mine .............................. 34 Faults ...................... 12 Uranium in Precambrian rocks ............. 35 Paleotopography and paleodrainage 12 Uranium and other mineral deposits 13 Uranium in the Harding Quartzite .......... 38 Los Ochos mine .............. 13 Source and localization of the uranium deposits . 40 Other mines and prospects 19 Application of genetic model to uranium exploration . 41 Source and localization of the uranium deposits 23 References cited ................................ 42 ILLUSTRATIONS Page FIGURES 1-5. Maps showing: 1. Location of Cochetopa and Marshall Pass districts, Colorado ................................... 2 2. Generalized geology of region including the Cochetopa and Marshall Pass districts, Colorado ....... 4 3. Generalized geology of the Cochetopa district, Saguache and Gunnison Counties, Colorado ......... 8 4. Paleotopographic contours on base of Oligocene volcanic rocks in parts of Gunnison and Saguache Counties, Colorado ............................................................................ 13 5. Paleotopographic contours and inferred paleodrainage on base of Oligocene volcanic rocks in the Cochetopa district, Saguache and Gunnison Counties, Colorado ....................................... 14 6. North-south section along bottom of ancestral Cochetopa valley, showing projection of modern Cochetopa Creek 15 7. West-east section along Los Ochos fault, showing geology of north wall of fault .......................... 15 8. Photograph of canyon of Cochetopa Creek, just south of Los Ochos mine ................................ 16 9. Diagram showing plan of main level and longitudinal projection of the main Los Ochos mine ............... 17 10. Photograph of Los Ochos fault, portal of West drift, Los Ochos mine ................................... 18 11. Generalized cross section of Los Ochos fault, Los Ochos mine .......................................... 18 12. Geologic map of an area near Cochetopa Creek, showing location of uranium, thorium, and mercury prospect pits 20 13. Generalized geologic map and cross section of the Marshall Pass district ................................. 26 14. Columnar stratigraphic section, Marshall Pass district ................................................ 28 15-19. Maps showing: 15. Inferred structure contours on base of Harding Quartzite, Marshall Pass district ................. 34 16. Inferred structure contours on base of Harding Quartzite, if present surface is tilted 7 ° toward N. 22 °30' E 35 17. Inferred structure contours on base of Tertiary volcanic rocks and gravels, Marshall Pass district ... 36 18. Inferred structure contours on base of Tertiary volcanic rocks and gravels, if present surface is tilted 7° toward N. 22°30'E ................................................................... 37 19. Region encompassing the Marshall Pass district and the western part of the Pueblo 1 ° X 2 ° quadrangle, showing localities prospected for uranium in Harding Quartzite and outcrop areas of lower Paleozoic sedimentary rocks .................................................................... 39 20. Projection showing three exposures of Tertiary volcanic rocks in relation to the Pitch mine ................. 41 in IV CONTENTS TABLES TABLE 1. Uranium production of the Cochetopa and Marshall Pass districts, 1956-1963, by mine ........................ 3 2. Correlation of Tertiary volcanic rocks in the Cochetopa district ............................................. 11 3. RaeU, thorium, and potassium contents of samples from the Los Ochos mine ................................. 19 METRIC CONVERSION FACTORS Metric unit Inch-pound equivalent millimeter (mm) = 0.04 inch (in.) centimeter (cm) = 0.39 inch (in.) meter (m) = 3.28 feet (ft) kilometer (km) =
Recommended publications
  • 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
    [Show full text]
  • What May Be Seen Crossing the Rockies En Route Between Ogden
    University of California Berkeley WHAT MAY BE SEEN EN ROUTE BETWEEN OGDEN, SALT LAKE CITY AND DENVER ON THE LINE OF The Denver & Rio Grande System E. T. JEFFERY, PRESIDENT, .... NEW YORK. C. H. SCHLACKS, VICE-PRESIDENT, . DENVER, COLO. A. C. BIRD, VICE-PRESIDENT, .... CHICAGO, ILL. A. S. HUGHES, GENERAL TRAFFIC MANAGER . DENVER, COLO. F. A. WADLEIGH, Ass'T GEN-L PASS-R AGENT, . DENVER, COLO. S, K. HOOPER, Gen'l Passenger and Ticket Agent, Denver, Colo. COPYRIGHT BY S. K. HOOPER. 19O5. if COMPARATIVE CUT DESERET vs. CANAAN. A striking comparison between the Holy Land and the new State of Utah, aptly termed the " Mountain Walled Treasury of the Gods." POOLE BROS. CHICAGO. HO EN ROUTE Rio Grande Western Railway "Great Salt Lake Route." The object of this book is to supply our patrons with information generally desired by travelers regarding their routes, and to do it in a brief, business- like way, leaving the flights of fancy to builders of "Castles in Spain." Western terminus, Denver & Rio Grande System. Second city in Utah. Nine miles from the Great Salt Lake, at the base of the Wasatch Mountains. Surrounded by immensely rich agricultural and mineral re- Ogden sources. Railroad center of Utah - Denver & Rio Grande, Suthern Pacific, Oregon Short Line & Utah Northern, Union Pacific. Second largest electrical power plant in the United States. Beet sugar factory. Destined to be an important manufacturing center. Ogden Hot Springs four miles. Growing sanitarium. Leaving Union Depot, you cross Ogden River in the city limits flows into Great Salt Lake. Roy From Ogden to Salt Lake City the Alt.
    [Show full text]
  • Fens in a Large Landscape of West-Central Colorado
    Inventory of Fens in a Large Landscape of West-Central Colorado Grand Mesa, Uncompahgre, and Gunnison National Forests April 6, 2012 Beaver Skull Fen in the West Elk Mountains – a moat surrounding the floating mat Barry C. Johnstona, Benjamin T. Strattonb, Warren R. Youngc, Liane L. Mattsond, John M. Almye, Gay T. Austinf Grand Mesa, Uncompahgre, and Gunnison National Forests 2230 Highway 50, Delta, Colorado 81416-2485 a Botanist, Grand Mesa-Uncompahgre-Gunnison National Forests, Gunnison, CO. (970) 642-1177. [email protected] b Hydrologist, Grand Mesa-Uncompahgre-Gunnison National Forests, Gunnison, CO. (970) 642-4406. [email protected] cSoil Scientist, Grand Mesa-Uncompahgre-Gunnison National Forests, Montrose, CO. (970) 240-5411. [email protected] d Solid Leasable Minerals Geologist, USDA Forest Service Minerals and Geology Management, Centralized National Operation, Delta, CO. (970) 874-6697. [email protected] e Hydrologist (Retired), Grand Mesa-Uncompahgre-Gunnison National Forests, Delta, CO. f Resource Management Specialist, Bureau of Land Management, Gunnison, CO. (970-642-4943). [email protected]. 1 Acknowledgements Our deepest thanks go to Charlie Richmond, Forest Supervisor, for his support and guidance through this project; and to Sherry Hazelhurst, Deputy Forest Supervisor (and her predecessor, Kendall Clark), for valuable oversight and help over all the hurdles we have encountered so far. Carmine Lockwood, Renewable Resources Staff Officer, Lee Ann Loupe, External Communications Staff Officer, and Connie Clementson, Grand Valley District Ranger, members of our Steering Committee, gave much advice and guidance. Bill Piloni, Forest Fleet Manager, was most helpful with ironing out our vehicle situations. Doug Marah helped us get out some tight spots.
    [Show full text]
  • Geology and Mineral Deposits of the Poncha Springs NE Quadrangle, Chaffee County,Colorado
    Geology and Mineral Deposits of the Poncha Springs NE Quadrangle, Chaffee County,Colorado By RALPH E. VAN ALSTINE With a section on Fluorspar Mines and Prospects By RALPH E. VAN ALSTINE and DOAK C. COX GEOLOGICAL SURVEY PROFESSIONAL PAPER 626 Prepared in cooperation with the Colorado State Mining Industrial Development Board UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1969 UNITED STATES DEPARTMENT OF THE INTERIOR WALTER J. HICKEL, Secretary GEOLOGICAL SURVEY William T. Pecora, Director Library of Congress catalog-card: No. 70-602625 For sale by the Superintendent of Docume!lts, U:S. Government Printing Office Washington, "D.C. 20402 o/\ 7 2 3 6 56 3 0 9 -, CONTENTS Page Page Abstract __________________________________________ _ 1 Economic geology----- ________ ---------------------- 30 Introduction ______________________________________ _ 2 Fluorspar deposits _________ ---------------------- 30 Earlier reports _________________________________ _ 2 History of production and ownership _____ -_-_- 30 Field and laboratory work _____________________ _ 2 Localization and structure_- __ -- ___ ---------- 30 Acknowledgments ______________________________ _ 4 Mineralogy _______________________ --------- :n Settlement and climate _________________________ _ 4 Paragenesis __________ ----------_----------- 34 Terrain _______________________________________ _ 4 Wallrock alteration _________________ --_---_- 34 Geologic units _____________________________________ ·- 4 Associated thermal · fluoride waters and the solubility of CaF2- _______
    [Show full text]
  • Decision Memo Monarch Pass U.S. Forest Service San Isabel National Forest Salida Ranger District Chaffee County, Colorado
    Decision Memo Monarch Pass U.S. Forest Service San Isabel National Forest Salida Ranger District Chaffee County, Colorado BACKGROUND AND PURPOSE & NEED Background: Beginning in the early 2000’s in the Weminuche Wilderness of southern Colorado, a spruce beetle (Dendroctonus rufipennis) epidemic began expanding north. During stand exam field procedures in 2012, within the Monarch Mountain Ski area, active spruce beetle infestation was discovered on several plots. Further reconnaissance discovered scattered spruce beetle populations in the Monarch Mountain Ski area, Old Monarch Pass and Monarch Park areas. Prior to this time no active spruce beetle infestation had been observed in these areas. Since 2012, spruce beetle activity has increased and is now at epidemic levels across the Monarch Pass area. In some stands, mortality of the mature overstory is approaching 75 percent. In Colorado, spruce beetle has affected over 1.7 million acres since 1996. Figure 1. Example of forest conditions in the Monarch Pass area (early spring 2017). Photo by A. Rudney. — Decision Memo — Page 1 of 23 Figure 2. Example of trees killed by spruce beetle. Photo by A. Rudney. Western balsam bark beetle (Dryocoetes confusus) has been affecting stands within the ski area and across the Monarch Pass area since the early 2000’s. Lodgepole pine (Pinus contorta) forests in the area are at high risk for mountain pine beetle infestation (Dendroctonus ponderosae) due to mature age, tree size and density. In addition, increased snag (dead standing trees) levels within the ski area have exposed visitors to a higher risk of falling trees. The increase in mortality is leading to increased fuel loading and higher risks for firefighters attempting initial or extended attack on wildland fires within the project area.
    [Show full text]
  • THE GUNNISON RIVER BASIN a HANDBOOK for INHABITANTS from the Gunnison Basin Roundtable 2013-14
    THE GUNNISON RIVER BASIN A HANDBOOK FOR INHABITANTS from the Gunnison Basin Roundtable 2013-14 hen someone says ‘water problems,’ do you tend to say, ‘Oh, that’s too complicated; I’ll leave that to the experts’? Members of the Gunnison Basin WRoundtable - citizens like you - say you can no longer afford that excuse. Colorado is launching into a multi-generational water planning process; this is a challenge with many technical aspects, but the heart of it is a ‘problem in democracy’: given the primacy of water to all life, will we help shape our own future? Those of us who love our Gunnison River Basin - the river that runs through us all - need to give this our attention. Please read on.... Photo by Luke Reschke 1 -- George Sibley, Handbook Editor People are going to continue to move to Colorado - demographers project between 3 and 5 million new people by 2050, a 60 to 100 percent increase over today’s population. They will all need water, in a state whose water resources are already stressed. So the governor this year has asked for a State Water Plan. Virtually all of the new people will move into existing urban and suburban Projected Growth areas and adjacent new developments - by River Basins and four-fifths of them are expected to <DPSDYampa-White %DVLQ Basin move to the “Front Range” metropolis Southwest Basin now stretching almost unbroken from 6RXWKZHVW %DVLQ South Platte Basin Fort Collins through the Denver region 6RXWK 3ODWWH %DVLQ Rio Grande Basin to Pueblo, along the base of the moun- 5LR *UDQGH %DVLQ tains.
    [Show full text]
  • Cochetopa Hills Vegetation Management Project Environmental Assessment
    United States Department of Agriculture Forest Service March 2014 Cochetopa Hills Grand Mesa, Uncompahgre and Gunnison National Vegetation Management Forests Gunnison Ranger District Project Environmental Assessment Saguache County, Colorado Lead Agency: USDA Forest Service Responsible Official: John Murphy, District Ranger, Gunnison Ranger District, GMUG NF Contact: Arthur Haines, District Silviculturist Gunnison Ranger District, GMUG NF Phone: 970 642-4423 Email: [email protected] The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 14 th and Independence Avenue, SW, Washington, D.C. 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer. Cochetopa Hills Vegetation Management Project Environmental Assessment Table of Contents 1. PROPOSED ACTION/PURPOSE OF AND NEED FOR ACTION........................................................1 1.1. Introduction .................................................................................................................................
    [Show full text]
  • Strategic Management Plan
    Upper Gunnison River Water Conservancy District Strategic Management Plan Including Discussion of Water Management Issues Inventory of Water Resources in the District Legal, Institutional and Environmental Setting Revised September 30, 2016 Upper Gunnison River Water Conservancy District 210 West Spencer, Suite B Gunnison, Colorado 81230 www.ugrwcd.org - [email protected] TABLE OF CONTENTS INTRODUCTION . 1 MISSION AND VALUES STATEMENTS . 3 EXECUTIVE SUMMARY . 5 SECTION 1. GEOGRAPHY, POPULATION, AND ECONOMY.. 10 1.1 GEOGRAPHY . 11 1.2 POPULATION . 13 1.3 ECONOMY . 14 1.3.1 Agriculture . 14 1.3.2 Water Based Recreation . 14 SECTION 2. DESCRIPTION AND ACCOMPLISHMENTS OF THE DISTRICT. 18 2.1 ORGANIZATION . 19 2.2 COMPOSITION OF THE BOARD OF DIRECTORS . 20 2.3 THE BUDGET PROCESS . 22 2.4 MAJOR ACCOMPLISHMENTS OF THE UPPER GUNNISON DISTRICT . 23 2.4.1 1975 Taylor Park Reservoir Operation and Storage Exchange Agreement . 23 2.4.2 Taylor Park Reservoir Second Fill Decree . 23 2.4.3 Opposing Transbasin Diversion - Union Park Reservoir Litigation . 23 2.4.4 2000 Aspinall Subordination Agreement . 24 2.4.5 Aspinall Unit Contract Plan for Augmentation . 24 2.4.6 Black Canyon of the Gunnison federal reserved water right settlement . 25 2.4.7 Meridian Lake Reservoir Project . 26 2.4.8 Recreational In-Channel Diversion Water Right. 27 2.4.9 Lake San Cristobal Project . 27 SECTION 3. DISCUSSION OF WATER MANAGEMENT ISSUES . 29 3.1 OUT-OF-BASIN DIVERSIONS . 30 3.2 PROTECTION AGAINST DOWNSTREAM SENIOR CALLS . 31 3.3 EXISTING USES SUBJECT TO A DOWNSTREAM SENIOR CALL . 31 3.3.1 Irrigation .
    [Show full text]
  • Denver & Rio Grande Western Railroad
    United States Department of the Interior NATIONAL PARK SERVICE 2280 National Register of Historic Places 1201 "I" (Eye) Street, NW Washington D.C. 20005 The Director of the National Park Service is pleased to announce actions on the following properties for the National Register of Historic Places. For further information contact Edson Beall at (202) 354-2255 or E-mail: [email protected] Visit our web site at http://www.cr.nps.gov/nr WEEKLY LIST OF ACTIONS TAKEN ON PROPERTIES: 4/20/09 THROUGH 4/24/09 KEY: State, County, Property Name, Address/Boundary, City, Vicinity, Reference Number, NHL, Action, Date, Multiple Name ARKANSAS, MULTIPLE COUNTIES, We've Gotta Get Tough: History of World War II Home Front Efforts in Arkansas, 1941-1946 MPS, 64501021, COVER DOCUMENTATION ACCEPTED, 4/22/09 CALIFORNIA, LOS ANGELES COUNTY, Marguerita Lane Historic District, Marguerita La. off South Morengo Ave., Pasadena, 09000177, LISTED, 4/10/09 CALIFORNIA, SAN FRANCISCO COUNTY, Veterans Affairs Medical Center--San Francisco, California, 4150 Clement St., San Francisco, 05001112, LISTED, 4/20/09 COLORADO, MONTROSE COUNTY, Denver & Rio Grande Western Railroad Caboose No. 0577, Approximately 1 mi. N. by NE of US 50 at Cimarron, adjacent to Morrow Point Dam Rd., Curecanti National Recreation Ctr., Cimarron, 09000222, LISTED, 4/21/09 COLORADO, MONTROSE COUNTY, Denver & Rio Grande Western Railroad Locomotive No. 278 and Tender, Approximately 1 mi. N. by NE. of US 50 at Cimarron, near Marrow Point Dam Rd., Curecanti National Recreation Center, Cimarron, 09000223, LISTED, 4/21/09 CONNECTICUT, NEW HAVEN COUNTY, Stone, Medad Tavern, 197 Three Mile Course, Guilford, 08001378, LISTED, 1/30/09 INDIANA, HANCOCK COUNTY, Lockheed PV-2 Harpoon No.
    [Show full text]
  • WIVG03601 DIP.Pdf
    SUMMARY REPORT UPPER GUNNISON-UNCOMPAHGRE BASIN PHASE 1 FEASIBILITY STUDY Submitted to: Colorado Water Resources and Power Development Authority 1580 Logan Street, Suite 620 Denver, Colorado 80203 Prepared by: HDR Engineering, Inc. 303 East 17th Avenue, Suite 300 Denver, Colorado 80203 In association with: WBLA, Inc. U.S. Bureau of Reclamation Woodward Clyde Consultants C.U. Center for Economic Analysis HDR Engineering, Inc. Suite 300 Telephone 303 East 17th Avenue 303 861-1300 Denver, Colorado 80203-1256 Mr. Uli Kappus, P.E., Executive Director Colorado Water Resources and Power Development Authority 1580 Logan Street, Suite 620 Denver, CO 80203 Re: Summary Report for the Upper Gunnison-Uncompahgre Basin Phase 1 Feasibility Study Dear Mr. Kappus: We are pleased to submit this Summary Report as required by our contract dated June 5, 1987. Five interim Task Memoranda have been submitted previously, each reporting in detail on certain aspects of the study. A Final Report which discusses the study in a more detailed manner is submitted under separate cover. The objective of this study was to identify and evaluate water resource management plans to enhance the water-based economy of the Study Area in an environmentally sound manner. Both structural and non-structural components have been examined, evaluated and utilized to formulate alternative plans which would meet in-basin needs. A recommended plan has been identified which meets the study objective. Non-structural measures related municipal industrial sector were found to have little potential for saving water in the context of this basin-wide study because the total consumptive use in this sector is less than two percent of the total consumptive use in the entire study area at present.
    [Show full text]
  • Forest Health & Wildfire Resiliency
    Chaffee Common Ground Funding Recommendation June 1, 2021 Page 1 of 4 The Chaffee Common Ground Citizens Advisory Committee recommends $2,448,241 in awards to 18 recipients during the Spring 2021 grant funding cycle. Twenty applications requesting $2.92 million were received. The package includes $2,015,600 for forest health and wildfire resilience, $249,640 to sustain rural landscapes, and $183,001 for recreation management that protects watersheds and landscapes in Chaffee County. Matching cash and in-kind funds associated with these recommendations equal $10,529.35, bringing a potential $12,977,859.35 in investments to the community. The following are the applications received with the amounts requested. Following each description, is the recommended funding. Forest Health & Wildfire Resiliency Monarch Pass Forest & Watershed Health Project $65,000 in 2021 to Arkansas River Watershed Collaborative (ARWC) to complete a 125-acre portion of the 2,809-acre U.S. Forest Service Monarch Pass Vegetation Management Project. Planned treatments are located on the lower slopes of Monarch Ridge near Monarch Park and both sides of US Highway 50 near Old Monarch Pass Road and Monarch Mountain ski area. ARWC’s mission is to serve Arkansas River Basin Communities by addressing locally identified watershed issues for economic, ecological and social benefit. Ranked 6th Recommended Funding: $50,000 in 2021 Focused Fuels Reduction for Fire Ready Communities $300,000 over three years to Colorado State University/Colorado State Forest Service for 260 acres of wildfire risk reduction and forest restoration work in five locations: Broadview along Count Road 289; Three Elk’s community green space; Kiowa Road near Mesa Antero; County Road 325 south of Lost Creek Ranch; and Poncha Pass.
    [Show full text]
  • Field Trip to Northern San Juan Volcanic Field
    ,- ' FIELD TRIP TO NORTHERN SAN JUAN VOLCANIC FIELD Days 2-3: Cochetopa Park, La Garita, San Luis, and Lake City calderas P.W. Lipman, for Colorado Scientific Society, Sept. 20-21, 2003 GEOLOGIC SETTING Andesitic to rhyolitic volcanic rocks of the central San Juan volcanic field, along with associated epithermal ores, have been studied intermittently since early in the twentieth century (Emmons and Larsen, 1913; Cross and Larsen, 1935; Larsen and Cross, 1956), culminating with the detailed study of the Creede mining district by Steven and Ratte (1965) and regional field and volcanological studies (Lipman and others, 1970; Steven and others, 1974; Steven and Lipman, 1976). While much had previously been learned about the evolution of several complex caldera clusters from 3 which at least 22 major ash-flow sheets (each 150-5,000 km ) were erupted at 30-26 Ma, recent mapping and other research initiated in support of the Creede Scientific Drilling Project (Bethke and Lipman, 1987; Bethke and Hay, 2000; Lipman, 2000) has provided major new insights for the regional stratigraphic sequence, duration of volcanism, eruptive processes, magmatic evolution, and regional structure in the central part of the volcanic field. In-progress studies,to be reviewed during this trip, are focusing on the enigmatic Cochetopa Park caldera and little-studied volcanic evolution of the northeasternSan Juan Mountains, where central San Juan units overlap older tuff sheets from caldera sources in the Sawatch Range farther to the northeast. Volcanism The San Juan Mountains are the largest erosional remnant of a composite volcanic field (Fig. 1) that covered much of the southern Rocky Mountains in middle Tertiary time (Steven, 1975).
    [Show full text]