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Can You Unlock the Secrets? Douglas County Outdoors How to Play Has a Secret
CAN YOU UNLOCK THE SECRETS? DOUGLAS COUNTY OUTDOORS HOW TO PLAY HAS A SECRET... 1. Have fun and enjoy your parks, trails and open spaces. but it’s encrypted, and we need YOU 2. Each individual may complete their own booklet (one booklet per person). to crack the code! 3. Visit the first location, which is LOCATION J. Visit eight scenic Douglas County Outdoors Open Space (Find the list of locations and their corresponding letters or Parks locations to find the numbers to solve the code. on pages 4-7.) Your first destination is provided on page eight of this decoder booklet. 4. Know before you go. Look at trail maps online or at the trailheads. Explore each trail or park while keeping your eyes peeled for a wooden post with a plaque on top. That’s where you’ll find 5. DON’T FORGET A CRAYON or PENCIL. a number in the code and the clue to your next location. 6. Find the post with the numbered plaque. Create a Once you collect all eight numbers you’ve cracked the code! rubbing of the plaque in the first box on page 8 by Use them to open two four-digit locks on a chest located at placing your booklet over the plaque and running your our Parks office. crayon or pencil over it. (The number in the center of the rubbing is the first Unlock the Decode Douglas County secrets to win a prize and number of the code that opens the locks on the chest.) be entered into the grand prize drawing. -
Understanding and Mapping Variability of the Niobrara Formation
UNDERSTANDING AND MAPPING VARIABILITY OF THE NIOBRARA FORMATION ACROSS WATTENBERG FIELD, DENVER BASIN by Nicholas Matthies A thesis submitted to the Faculty and the Board of Trustees of the Colorado School of Mines in partial fulfillment of the requirements for the degree of Master of Science (Geology). Golden, Colorado Date________________ Signed:____________________________________ Nicholas Matthies Signed:____________________________________ Dr. Stephen A. Sonnenberg Thesis Advisor Golden, Colorado Date:_______________ Signed:____________________________________ Dr. Paul Santi Professor and Head Department of Geology and Geological Engineering ii ABSTRACT Wattenberg Field has been a prolific producer of oil and gas since the 1970s, and a resurgence of activity in recent years in the Niobrara Formation has created the need for a detailed study of this area. This study focuses on mapping regional trends in stratigraphy, structure, and well log properties using digital well logs, 3D seismic data, and core X-ray diffraction data. Across Wattenberg, the Niobrara is divided into the Smoky Hill Member (made up of A Chalk, A Marl, B Chalk, B Marl, C Chalk, C Marl, and Basal Chalk/Marl) and the Fort Hays Limestone Member. Directly beneath the Niobrara, the Codell Sandstone is the uppermost part of the Carlile Formation. Stratigraphic trends in these units are primarily due to differential compaction and compensational sedimentation. The largest structural trend is a paleo-high that runs east-west to northeast-southwest across the middle of the field. It has a relief of about 100 ft, and is 20 mi wide. The A Chalk and A Marl show evidence of submarine erosion over this area. Faults mapped from 3D seismic data are consistent with previously published data on a proposed polygonal fault system in the Denver Basin. -
GROUNDWATER LEVELS in the DENVER BASIN BEDROCK AQUIFERS 2017
GROUNDWATER LEVELS in the DENVER BASIN BEDROCK AQUIFERS 2017 by Andrew D. Flor John W. Hickenlooper Robert W. Randall Governor Executive Director, DNR Kevin G. Rein Matthew A. Sares State Engineer Manager, Hydrogeology Section GROUNDWATER LEVELS IN THE DENVER BASIN BEDROCK AQUIFERS 2017 This report updates basic data concerning the depth to and elevation of groundwater in the four main Denver Basin bedrock aquifers collected during the spring and summer of 2017. The report is organized first by aquifer, then by well name. Well completion information is provided, where available. Wells that may be completed in more than one aquifer are listed according to the uppermost aquifer. Approximately 95 water-level measurements in this year’s report were obtained by Division of Water Resources (Division) personnel. A total of six wells have been instrumented with data loggers to collect daily water-level data. These include the following: - four wells in the Castle Rock area that monitor all four Denver Basin aquifers; CO3_LTDW (DB-204), CO3_TKD (DB-205), CO6_KA (DB-206) and CO3_KLF (DB-203); and - two wells near Golden in the Pleasant View Metropolitan District are completed in the Arapahoe (DB-201) and Laramie-Fox Hills (DB-200) aquifers. Water-level data from 126 cooperator wells are also included in this report. Personnel from cooperating water districts and municipalities graciously provided these data upon request. The Division appreciates the cooperation of the many entities that provide water-level information. Recent Legislation has directed the Division of Water Resources, in consultation with the Colorado Water Conservation Board, to encourage qualified parties to submit water level data for inclusion in the statewide water level database. -
PALEONTOLOGICAL TECHNICAL REPORT: 6Th AVENUE and WADSWORTH BOULEVARD INTERCHANGE PHASE II ENVIRONMENTAL ASSESSMENT, CITY of LAKEWOOD, JEFFERSON COUNTY, COLORADO
PALEONTOLOGICAL TECHNICAL REPORT: 6th AVENUE AND WADSWORTH BOULEVARD INTERCHANGE PHASE II ENVIRONMENTAL ASSESSMENT, CITY OF LAKEWOOD, JEFFERSON COUNTY, COLORADO Prepared for: TEC Inc. 1746 Cole Boulevard, Suite 265 Golden, CO 80401 Prepared by: Paul C. Murphey, Ph.D. and David Daitch M.S. Rocky Mountain Paleontology 4614 Lonespur Court Oceanside, CA 92056 303-514-1095; 760-758-4019 www.rockymountainpaleontology.com Prepared under State of Colorado Paleontological Permit 2007-33 January, 2007 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. County................................................................................................................................. 8 4.4. City..................................................................................................................................... -
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. -
7.0 References
I-70/32nd Avenue Interchange Environmental Assessment 7.0 REFERENCES Amuedo and Ivey. 1975. Coal mine subsidence and land-use in the Boulder-Weld coalfield, Boulder and Weld Counties, Colorado: Colorado Geological Survey, Environmental Geology Series EG-9. Anderson, D.G. and J. Stevens. 2000. City of Wheat Ridge Open Space Areas Biological Inventory. Colorado. American Society for Testing and Materials (ASTM). 2000. ASTM Standards on Environmental Site Assessments for Commercial Real Estate. E 1527-00. Beane, Ronald. 1998. Presence/absence surveys for Preble’s meadow jumping mouse, Coors Brewing Company – Eastern Parcel, Jefferson County, Colorado. October 14. Brown, R.W. 1943. Cretaceous-Tertiary boundary in the Denver Basin, Colorado: Geological Society of America Bulletin, v. 54. Brown, R.W. 1962. Paleocene flora of the Rocky Mountains and the Great Plains: U.S. Geological Survey Professional Paper 375. Bryant, B., McGrew, L., and Wobus, R.A. 1981. Geologic map of the Denver 1° X 2° Quadrangle, north-central Colorado: U.S. Geological Survey Investigations Map, I-1163, 2 sheets (Scale 1:250,000). CH2MHILL. 2000. I-70 Denver to Golden Major Investment Study, Final Major Investment Study Report. November. CH2M HILL. 2001a. Ute ladies’-tresses orchid presence/absence survey final report, I-70/SH 58 Interchange, Jefferson County, Colorado. CDOT Project No. NH 0703-246. October 31. CH2M HILL. 2001b. Threatened, endangered, and sensitive species, I-70/SH 58 Interchange, Jefferson County, Colorado. CDOT Project No. NH 0703-246. October. City of Lakewood. 2003. Comprehensive Plan. February. Retrieved March 2006 from http://www.ci.lakewood.co.us City of Wheat Ridge. -
Analysis and Correlation of Growth
ANALYSIS AND CORRELATION OF GROWTH STRATA OF THE CRETACEOUS TO PALEOCENE LOWER DAWSON FORMATION: INSIGHT INTO THE TECTONO-STRATIGRAPHIC EVOLUTION OF THE COLORADO FRONT RANGE by Korey Tae Harvey A thesis submitted to the Faculty and Board of Trustees of the Colorado School of Mines in partial fulfillment of the requirements for the degree of Master of Science (Geology). Golden, Colorado Date __________________________ Signed: ________________________ Korey Harvey Signed: ________________________ Dr. Jennifer Aschoff Thesis Advisor Golden, Colorado Date ___________________________ Signed: _________________________ Dr. Paul Santi Professor and Head Department of Geology and Geological Engineering ii ABSTRACT Despite numerous studies of Laramide-style (i.e., basement-cored) structures, their 4-dimensional structural evolution and relationship to adjacent sedimentary basins are not well understood. Analysis and correlation of growth strata along the eastern Colorado Front Range (CFR) help decipher the along-strike linkage of thrust structures and their affect on sediment dispersal. Growth strata, and the syntectonic unconformities within them, record the relative roles of uplift and deposition through time; when mapped along-strike, they provide insight into the location and geometry of structures through time. This paper presents an integrated structural- stratigraphic analysis and correlation of three growth-strata assemblages within the fluvial and fluvial megafan deposits of the lowermost Cretaceous to Paleocene Dawson Formation on the eastern CFR between Colorado Springs, CO and Sedalia, CO. Structural attitudes from 12 stratigraphic profiles at the three locales record dip discordances that highlight syntectonic unconformities within the growth strata packages. Eight traditional-type syntectonic unconformities were correlated along-strike of the eastern CFR distinguish six phases of uplift in the central portion of the CFR. -
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. -
Fully Sited and Designed to Minimize Visual Impacts, Particularly of Distant Front Range Mountain Views and Open Meadows
20352202035200303500333555 Department of Community Development Douglas County 2035 Comprehensive Master Plan Douglas County Department of Community Development Planning Services Division Douglas County, Colorado Adopted by the Douglas County Planning Commission June 16, 2014 ACKNOWLEDGEMENTS On behalf of the Douglas County Planning Commission, staff would like to thank all those who participated in this incredible effort to aid in Douglas County’s development well into the future. Special thanks to all of the citizens who have Douglas County Community Development Staff participated in the 2035 Comprehensive Master Terence T. Quinn, AICP, Director of Community Plan Update. Without your input, the Plan Development would not be possible. Randy Burkhardt, Assistant Director of Parks, Planning Commission 2014 Trails & Building Grounds Pam Schenck Kelly, Chair Edward Brewer Jennifer Eby, Manager of Community and Jim Dullea Resource Services Clarence Hughes Scott Kirkwood Steve Koster, AICP, Assistant Director of David Simonson Planning Services Stevan Strain Bill Vincent Update Team Krystal Woodbury Joe Fowler Dustin Smith, Alternate Kati Rider, AICP Michael O’Muireadhaigh, Alternate Curt Weitkunat, AICP Lloyd Whittal, Jr., Alternate Editing and Graphics Former Planning Commissioners Kim Smith Gary Dani Gary Weaver Contributing Staff Dan Avery, AICP Board of County Commissioners Jeanette Bare, AICP Roger A. Partridge, Chair Chris Boyd Jack A. Hilbert Donna Coffin Jill E. Repella Dan Dertz Tina Dill Doug DeBord, County Manager Nancy Gedeon Judy -
Denver Basin
Regional Tectonics and Their Thermal Influence on Sedimentary Basins: Denver Basin BROKAW, CASEY P., Graduate Student (Geophysics), Southern Methodist University, Roy M. Huffington Department of Earth Sciences Purpose Observations & Analysis The purpose of this project is to analyze the heat flow regime within the sedimentary Denver Basin and assess its variability. Thermal conduc- Thermal Conductivity of Basin Sediments Bottom Hole Temperature Data tivity measurements were made on Cretaceous sedimentary core samples provided by Anadarko Petroleum Corp. and the United States Geo- Average thermal conductiv- logical Survey Core Research Center (USGS CRC). Measured thermal conductivity values were used to calibrate and constrain heat flow ity values by formation. Formations are scaled for within the basin. Two equilibrium logs along with the newly measured thermal conductivity were used to calculate site specific heat flow. thickness and grain size. These new data points help constrain the observed variation in heat flow along the basin’s western syncline. Methods for the analytics of Thermal conductivity meas- urements were made on causation of basin thermal variability will follow outlines similar to those of Blackwell & Steele, 1989 (see Table 1 for thermal effects). core samples utilizing the divided bar apparatus and Table 1. From Blackwell and Steele’s study Thermal Conductivity of Sedimentary Rocks: methods outlined by Black- Measurement and Significance. It Illustrates the variables and their scale of effect that can well & Spafford, 1987. Study Area effect the thermal regimes within sedimentary basins. Generally sediments showed a decrease in ther- Uncorrected BHTS were extracted utilizing a spatial extraction (10 km radius from Eq. log well site) based on the sedimentary formations * mal conductivity value with an increase in shale/clay they were measured within. -
DENVER BASIN PROVINCE (039) by Debra K
DENVER BASIN PROVINCE (039) by Debra K. Higley, Richard M. Pollastro, and Jerry L. Clayton INTRODUCTION The Denver Basin Province is an asymmetrical Laramide-age structural basin located in eastern Colorado, southeastern Wyoming, the southwestern corner of South Dakota, and the Nebraska Panhandle. Two basin deeps located along the axis of the basin, close to the Front Range, separate the steeply dipping western flank and gently dipping eastern flank. The basin is bounded on the west by the Front Range of the Rocky Mountains, on the northwest by the Hartville Uplift, on the northeast by the Chadron Arch, and on the southwest and southeast by the Apishapa Uplift and Las Animas Arch, respectively. The primary producing plays in this province are the Dakota Group (Combined D and J Sandstones) Play (3905), and the J Sandstone Deep Gas (Wattenberg) Play (3906). Approximately 90 percent of the 800 MMBO and 1.2 TCFG produced from the basin has been from the J sandstone (Land and Weimer, 1978, Tainter, 1984). These two plays include 180 oil accumulations containing 1 or more MMBO. Eighteen fields have produced 6 BCFG or more (Hemborg, 1993d). Half of the province's 1.2 TCFG has been produced from the Wattenberg field; this field was discovered in 1970 and has produced about 0.63 TCFG and 2.2 MMBO from the J sandstone, Codell Sandstone, and Sussex (Terry) Sandstone. The largest oil field in the Denver Basin is Adena with more than 62 MMBO produced from the J and D sandstones and estimated ultimate recoverable of 62.5 MMBO. -
Summits on the Air – ARM for USA - Colorado (WØC)
Summits on the Air – ARM for USA - Colorado (WØC) Summits on the Air USA - Colorado (WØC) Association Reference Manual Document Reference S46.1 Issue number 3.2 Date of issue 15-June-2021 Participation start date 01-May-2010 Authorised Date: 15-June-2021 obo SOTA Management Team Association Manager Matt Schnizer KØMOS Summits-on-the-Air an original concept by G3WGV and developed with G3CWI Notice “Summits on the Air” SOTA and the SOTA logo are trademarks of the Programme. This document is copyright of the Programme. All other trademarks and copyrights referenced herein are acknowledged. Page 1 of 11 Document S46.1 V3.2 Summits on the Air – ARM for USA - Colorado (WØC) Change Control Date Version Details 01-May-10 1.0 First formal issue of this document 01-Aug-11 2.0 Updated Version including all qualified CO Peaks, North Dakota, and South Dakota Peaks 01-Dec-11 2.1 Corrections to document for consistency between sections. 31-Mar-14 2.2 Convert WØ to WØC for Colorado only Association. Remove South Dakota and North Dakota Regions. Minor grammatical changes. Clarification of SOTA Rule 3.7.3 “Final Access”. Matt Schnizer K0MOS becomes the new W0C Association Manager. 04/30/16 2.3 Updated Disclaimer Updated 2.0 Program Derivation: Changed prominence from 500 ft to 150m (492 ft) Updated 3.0 General information: Added valid FCC license Corrected conversion factor (ft to m) and recalculated all summits 1-Apr-2017 3.0 Acquired new Summit List from ListsofJohn.com: 64 new summits (37 for P500 ft to P150 m change and 27 new) and 3 deletes due to prom corrections.