Newsletter of the Society April 2007
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Denudation History and Internal Structure of the Front Range and Wet Mountains, Colorado, Based on Apatite-Fission-Track Thermoc
NEW MEXICO BUREAU OF GEOLOGY & MINERAL RESOURCES, BULLETIN 160, 2004 41 Denudation history and internal structure of the Front Range and Wet Mountains, Colorado, based on apatitefissiontrack thermochronology 1 2 1Department of Earth and Environmental Science, New Mexico Institute of Mining and Technology, Socorro, NM 87801Shari A. Kelley and Charles E. Chapin 2New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, NM 87801 Abstract An apatite fissiontrack (AFT) partial annealing zone (PAZ) that developed during Late Cretaceous time provides a structural datum for addressing questions concerning the timing and magnitude of denudation, as well as the structural style of Laramide deformation, in the Front Range and Wet Mountains of Colorado. AFT cooling ages are also used to estimate the magnitude and sense of dis placement across faults and to differentiate between exhumation and faultgenerated topography. AFT ages at low elevationX along the eastern margin of the southern Front Range between Golden and Colorado Springs are from 100 to 270 Ma, and the mean track lengths are short (10–12.5 µm). Old AFT ages (> 100 Ma) are also found along the western margin of the Front Range along the Elkhorn thrust fault. In contrast AFT ages of 45–75 Ma and relatively long mean track lengths (12.5–14 µm) are common in the interior of the range. The AFT ages generally decrease across northwesttrending faults toward the center of the range. The base of a fossil PAZ, which separates AFT cooling ages of 45– 70 Ma at low elevations from AFT ages > 100 Ma at higher elevations, is exposed on the south side of Pikes Peak, on Mt. -
Geology and Hydrology, Front Range Urban Corridor, Colorado
Bibliography and Index of Geology and Hydrology, Front Range Urban Corridor, Colorado By FELICIE CHRONIC and JOHN CHRONIC GEOLOGICAL SURVEY BULLETIN 1306 Bibliographic citations for more than 1,800 indexed reports, theses, and open-file releases concerning one of the Nation's most rapidly growing areas UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1974 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 74-600045 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D. C. 20402- Price $1.15 (paper cover) Stock Number 2401-02545 PREFACE This bibliography is intended for persons wishing geological information about the Front Range Urban Corridor. It was compiled at the University of Colorado, funded by the U.S. Geological Survey, and is based primarily on references in the Petroleum Research Microfilm Library of the Rocky Mountain Region. Extensive use was made also of U.S. Geological Survey and American Geological Institute bibliographies, as well as those of the Colorado Geological Survey. Most of the material listed was published or completed before July 1, 1972; references to some later articles, as well as to a few which were not found in the first search, are appended at the end of the alphabetical listing. This bibliography may include more references than some users feel are warranted, but the authors felt that the greatest value to the user would result from a comprehensive rather than a selective listing. Hence, we decided to include the most significant synthesizing articles and books in order to give a broad picture of the geology of the Front Range Urban Corridor, and to include also some articles which deal with geology of areas adjacent to, and probably pertinent to, the corridor. -
The Rocky Mountain Front, Southwestern USA
The Rocky Mountain Front, southwestern USA Charles E. Chapin, Shari A. Kelley, and Steven M. Cather New Mexico Bureau of Geology and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, New Mexico 87801, USA ABSTRACT northeast-trending faults cross the Front thrust in southwest Wyoming and northern Range–Denver Basin boundary. However, Utah. A remarkable attribute of the RMF is The Rocky Mountain Front (RMF) trends several features changed from south to north that it maintained its position through multi- north-south near long 105°W for ~1500 km across the CMB. (1) The axis of the Denver ple orogenies and changes in orientation from near the U.S.-Mexico border to south- Basin was defl ected ~60 km to the north- and strength of tectonic stresses. During the ern Wyoming. This long, straight, persistent east. (2) The trend of the RMF changed from Laramide orogeny, the RMF marked a tec- structural boundary originated between 1.4 north–northwest to north. (3) Structural tonic boundary beyond which major contrac- and 1.1 Ga in the Mesoproterozoic. It cuts style of the Front Range–Denver Basin mar- tional partitioning of the Cordilleran fore- the 1.4 Ga Granite-Rhyolite Province and gin changed from northeast-vergent thrusts land was unable to penetrate. However, the was intruded by the shallow-level alkaline to northeast-dipping, high-angle reverse nature of the lithospheric fl aw that underlies granitic batholith of Pikes Peak (1.09 Ga) faults. (4) Early Laramide uplift north of the RMF is an unanswered question. in central Colorado. -
Colorado Agriculture Bibliography 2005 Subject Areas: Mining And
Colorado Agriculture Bibliography 2005 A Bibliography of Primary and Secondary Material Published 1820-1945 Subject Areas: Mining and Geology Type of Materials: Serials Produced by the Colorado State University Libraries Copyright by Colorado State University Libraries Applies Overview This portable document file (.pdf ) is part of the Colorado Agriculture Bibliography project and includes bibliographic information on a variety of topics related to Colorado’s agricultural and rural past. The topics covered in this project are varied but include agriculture, education, water, mining, tourism, recreation, and more. The bibliography contains information about but not full-text for books, journals, dissertations, theses, archival collections, maps, photos, pamphlets, and more. The Web site and bibliography reflects Colorado’s contribution to the Preserving the History of United States Agriculture and Rural Life Project. This nation-wide effort aims to identify and preserve state and locally significant literature. The project involves the National Endowment for the Humanities (NEH), Cornell University, the United States Agricultural Information Network (USAIN), the National Agricultural Library (NAL), and other land-grant universities. The records in this bibliography may cover several subject areas and are listed alphabetically by author. A searchable website of the bibliography is also available if you would like to create searches and find information on other topics. The bibliography of Colorado history project was funded in part by a grant from the National Endowment for the Humanities (NEH). The project is part of the United States Agriculture Information Network (USAIN) Preservation Program. Cornell University coordinated the grant project. 1 1. _______ (1886-1890). The Mining industry . Denver, Colo.: [s.n.]. -
Rocky Mountain National Park Geologic Resource Evaluation Report
National Park Service U.S. Department of the Interior Geologic Resources Division Denver, Colorado Rocky Mountain National Park Geologic Resource Evaluation Report Rocky Mountain National Park Geologic Resource Evaluation Geologic Resources Division Denver, Colorado U.S. Department of the Interior Washington, DC Table of Contents Executive Summary ...................................................................................................... 1 Dedication and Acknowledgements............................................................................ 2 Introduction ................................................................................................................... 3 Purpose of the Geologic Resource Evaluation Program ............................................................................................3 Geologic Setting .........................................................................................................................................................3 Geologic Issues............................................................................................................. 5 Alpine Environments...................................................................................................................................................5 Flooding......................................................................................................................................................................5 Hydrogeology .............................................................................................................................................................6 -
Tectonic Evolution of Western Colorado and Eastern Utah D
New Mexico Geological Society Downloaded from: http://nmgs.nmt.edu/publications/guidebooks/32 Tectonic evolution of western Colorado and eastern Utah D. L. Baars and G. M. Stevenson, 1981, pp. 105-112 in: Western Slope (Western Colorado), Epis, R. C.; Callender, J. F.; [eds.], New Mexico Geological Society 32nd Annual Fall Field Conference Guidebook, 337 p. This is one of many related papers that were included in the 1981 NMGS Fall Field Conference Guidebook. Annual NMGS Fall Field Conference Guidebooks Every fall since 1950, the New Mexico Geological Society (NMGS) has held an annual Fall Field Conference that explores some region of New Mexico (or surrounding states). Always well attended, these conferences provide a guidebook to participants. Besides detailed road logs, the guidebooks contain many well written, edited, and peer-reviewed geoscience papers. These books have set the national standard for geologic guidebooks and are an essential geologic reference for anyone working in or around New Mexico. Free Downloads NMGS has decided to make peer-reviewed papers from our Fall Field Conference guidebooks available for free download. Non-members will have access to guidebook papers two years after publication. Members have access to all papers. This is in keeping with our mission of promoting interest, research, and cooperation regarding geology in New Mexico. However, guidebook sales represent a significant proportion of our operating budget. Therefore, only research papers are available for download. Road logs, mini-papers, maps, stratigraphic charts, and other selected content are available only in the printed guidebooks. Copyright Information Publications of the New Mexico Geological Society, printed and electronic, are protected by the copyright laws of the United States. -
Survey of Biological Resources in the Triple Creek Greenway City of Aurora
Joint Project Funding Request For Triple Creek Greenway Corridor Phase 3: Implementation Arapahoe County Open Spaces September 8, 2015 JOINT PROJECT FUNDING REQUEST Triple Creek Greenway Corridor Phase 3: Acquisition 1) Scope of Project The Triple Creek Greenway Corridor (TCGC) is comprised of land acquisitions, trail expansions, and trailhead development projects designed to expand and extend the greenway. Building on the success of acquisitions completed under our previous joint project, this phase includes properties that will complete the greenway and trail along Murphy Creek and protect the headwaters of Sand Creek at the confluence of Coal Creek and Senac Creek. A majority of these properties will remain undeveloped and provide permanent protection along an area otherwise prime for future development. Please see map titled TCGW_Phase3_AreaMap for a view of all properties purchased in Phase 2 and planned acquisitions under this Joint funding project request. 2) Project Summary The Triple Creek Greenway Corridor project, comprised of Sand Creek, Coal Creek, and Senac Creek in southeast Aurora, is an ambitious plan to add fourteen miles of interconnected greenway and trails between the existing terminus of the Sand Creek Regional Greenway and nearly 30,000 contiguous acres of publicly owned land surrounding the Aurora Reservoir. When completed, pedestrians, bicyclists, equestrians, and wildlife will be able to travel an uninterrupted 27-mile route from the Aurora Reservoir to the South Platte River. In the larger context, the corridor will provide additional connective loops to the Front Range Trail segments including the High Line Canal, Cherry Creek Trail and Toll Gate Creek Trail for a wide variety of uses and public benefit. -
Paleontological Technical Report: Cdot Project Nh 0242-040, Us Highway 24 West Corridor, Manitou Springs to Interstate 25, El Paso County, Colorado
PALEONTOLOGICAL TECHNICAL REPORT: CDOT PROJECT NH 0242-040 , US HIGHWAY 24 WEST CORRIDOR, MANITOU SPRINGS TO INTERSTATE 25, EL PASO COUNTY, COLORADO Prepared for: Dr. Christian J. Zier, Director Centennial Archaeology, Inc. 300 E Boardwalk, Bldg. 4-C Fort Collins, CO 80525 Prepared by: Paul C. Murphey, Ph.D. and David J. Daitch Ph.D. Rocky Mountain Paleontology 4614 Lonespur Ct. 470A Brook Circle Oceanside CA 92056 Boulder CO 80302 760-758-4019, 303-514-1095 303-818-6072, 303-442-0527 www.rockymountainpaleontology.com Prepared under State of Colorado Paleontological Permit 2008-36 December 31, 2008 CDOT Project NH-0242-40: Paleontological Technical Report 1 TABLE OF CONTENTS 1.0 SUMMARY............................................................................................................................. 3 2.0 INTRODUCTION ................................................................................................................... 4 2.1 DEFINITION AND SIGNIFICANCE OF PALEONTOLOGICAL RESOURCES........... 4 3.0 METHODS .............................................................................................................................. 6 4.0. LAWS, ORDINANCES, REGULATIONS AND STANDARDS......................................... 7 4.1. Federal................................................................................................................................. 7 4.2. State..................................................................................................................................... 8 4.3. -
Precambrian to Earliest Mississippian Stratigraphy, Geologic History, and Paleogeography of Northwestern Colorado and West-Central Colorado
Precambrian to Earliest Mississippian Stratigraphy, Geologic History, and Paleogeography of Northwestern Colorado and West-Central Colorado Prepared in cooperation with the Colorado Geological Survey U.S. GEOLOGICAL SURVEY BULLETIN 1 787-U AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with the last offerings, are given in the current-year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey 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 monthly, which is for sale in microfiche from the U.S. Geological Survey Books and Open-File Reports Sales, Box 25286, Denver, CO 80225. 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, Tech Books of the U.S. Geological Survey are available over the niques of Water-Resources Investigations, Circulars, publications counter at the following U.S. Geological Survey offices, all of of general interest (such as leaflets, pamphlets, booklets), single which are authorized agents of the Superintendent of Documents. copies of periodicals (Earthquakes & Volcanoes, Preliminary De termination of Epicenters), and some miscellaneous reports, includ ANCHORAGE, Alaska-4230 University Dr., Rm. -
Memorial to Byron John Chronic 1921–1996 FREDERICK N
Memorial to Byron John Chronic 1921–1996 FREDERICK N. MURRAY 3734 E. 81st Place, Tulsa, Oklahoma 74137 Byron John Chronic, a Fellow of the Geological Society of America, died July 15, 1996, at the age of 75. He was always known as John by all of his friends and professional associates. John was born June 3, 1921, in Tulsa, Oklahoma, to Byron John and Pansy Lee Chronic and grew up in Tulsa during the boom-and-bust years of the oil and gas business. He attended Barnard Elementary School, Woodrow Wilson Junior High School, and Central Senior High School. John played in the band in high school and later obtained a music scholarship at the University of Tulsa. He played percussion instruments and specialized in the xylophone, an instrument he continued to play in later years as a hobby. Shortly after receiving his petroleum engineering degree in 1942 from the University of Tulsa, John enlisted in the Army Air Corps. He was commissioned as a lieu- tenant and received a professional certificate in meteorology from the University of Chicago as a part of his training. As a meteorologist, John flew on numerous weather observation flights over the North Atlantic and, later, the Pacific Ocean. Lieutenant Chronic was one of the weathermen who flew B-29 reconnaissance flights over Japan during the time when atomic bombs were dropped on Hiroshima and Nagasaki. After World War II, John returned to his academic studies. He followed a mentor, Lowell Laudon, who had moved from teaching geology at the University of Tulsa to the University of Kansas. -
Garden of the Gods at Colorado Springs: Paleozoic and Mesozoic Sedimentation and Tectonics
Scholars Crossing Faculty Publications and Presentations Department of Biology and Chemistry 2010 Garden of the Gods at Colorado Springs: Paleozoic and Mesozoic Sedimentation and Tectonics Marcus R. Ross Liberty University, [email protected] William A. Hoesch Steven A. Austin John H. Whitmore Timothy L. Clarey Follow this and additional works at: https://digitalcommons.liberty.edu/bio_chem_fac_pubs Part of the Biology Commons, and the Chemistry Commons Recommended Citation Ross, Marcus R.; Hoesch, William A.; Austin, Steven A.; Whitmore, John H.; and Clarey, Timothy L., "Garden of the Gods at Colorado Springs: Paleozoic and Mesozoic Sedimentation and Tectonics" (2010). Faculty Publications and Presentations. 114. https://digitalcommons.liberty.edu/bio_chem_fac_pubs/114 This Article is brought to you for free and open access by the Department of Biology and Chemistry at Scholars Crossing. It has been accepted for inclusion in Faculty Publications and Presentations by an authorized administrator of Scholars Crossing. For more information, please contact [email protected]. The Geological Society of America Field Guide 18 2010 Garden of the Gods at Colorado Springs: Paleozoic and Mesozoic sedimentation and tectonics Marcus R. Ross Department of Biology and Chemistry, Liberty University, Lynchburg, Virginia 24502, USA William A. Hoesch Consultant, 9310 Fanita Parkway, Santee, California 92071, USA Steven A. Austin Austin Research Consulting Inc., 23619 Calle Ovieda, Ramona, California 92065, USA John H. Whitmore Science and Mathematics Department, Cedarville University, Cedarville, Ohio 45314, USA Timothy L. Clarey Geosciences Department, Delta College, University Center, Michigan 48710, USA ABSTRACT Exposed along the southeast fl ank of the Colorado Front Range are rocks that beautifully illustrate the interplay of sedimentation and tectonics. -
Geology Teacher Guide
National Park Service Rocky Mountain U.S. Department of Interior Rocky Mountain National Park Geology Teacher Guide Table of Contents Rocky Mountain National Park.................................................................................................1 Teacher Guides..............................................................................................................................2 Rocky Mountain National Park Education Program Goals...................................................2 Geology Background Information Introduction.......................................................................................................................4 Setting.................................................................................................................................5 Tectonics of Rocky Mountain National Park..............................................................10 Glaciers of Rocky Mountain National Park................................................................16 Erosion History of Rocky Mountain National Park...................................................20 Foothills outside Rocky Mountain National Park......................................................21 Climate and Ecology of Rocky Mountain National Park..........................................22 Geology Resources Classroom Book List.......................................................................................................26 Glossary.............................................................................................................................28