DOCSLIB.ORG

Preliminary Investigation of Quaternary Faults in Eastern Jackson Hole, Wyoming

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Preliminary Investigation of Quaternary Faults in Eastern Jackson Hole, Wyoming Interpreting the past, providing for the future Preliminary Investigation of Quaternary Faults in Eastern Jackson Hole, Wyoming By Seth J. Wittke Open File Report 2017-1 March 2017 Wyoming State Geological Survey Thomas A. Drean, Director and State Geologist Preliminary Investigation of Quaternary Faults in Eastern Jackson Hole, Wyoming By Seth J. Wittke Layout by Christina D. George Open File Report 2017-1 Wyoming State Geological Survey Laramie, Wyoming: 2017 For more information on the WSGS, or to download a copy of this Open File Report, visit www.wsgs.wyo. gov or call 307-766-2286. This Wyoming State Geological Survey (WSGS) Open File Report is preliminary and may require additional compilation and analysis. Additional data and review may be provided in subsequent years. The WSGS welcomes any comments and suggestions on this research. Please contact the WSGS at 307-766-2286, or email [email protected]. Citation: Wittke, S.J., 2017, Preliminary investigation of Quaternary faults in eastern Jackson Hole, Wyoming: Wyoming State Geological Survey Open File Report 2017-1, 11 p. ii Table of Contents Abstract . .1 Introduction . 1 Previous Work ........................................................................2 Geologic Setting . .2 Methods . .3 Antelope Flats . .3 General Description. .3 Geomorphology. 4 Scarp Profiles. 5 Summary. .6 Faults South of Blacktail Butte ............................................................6 General Description. .6 Geomorphology. 7 Scarp Profiles .......................................................................7 Summary. .8 Flat Creek Fan Faults ...................................................................8 General Description. .8 Geomorphology. 9 Scarp Profiles .......................................................................9 Summary. 10 Discussion and Conclusions. 10 Acknowledgments .................................................................... 11 References. .12 Appendix . .14 iii ABSTRACT Jackson Hole valley contains numerous faults that are Quaternary age. The Teton fault is the most notable; however, numerous other faults can also be found in the valley. Three fault systems consisting of the faults at Antelope Flats, south of Blacktail Butte, and on the Flat Creek fan, are located along the eastern margin of the valley. The faults displace outwash and alluvial surfaces of Bull Lake (Munger Mountain) or younger age; however, they are not confirmed to be independently seismogenic. Light detecting and ranging (LiDAR) data, coupled with photogrammetric analysis of aerial photography, were used to refine prior mapping of the faults and map local geomorphic features. Elevation profiles across scarp sections were analyzed in order to calculated scarp offsets. In total, 36 pro- files were extracted across the three fault systems. Scarp profile analysis shows scarp offsets across the Antelope Flats system to range from ~0–1.4 m. Net offsets at Blacktail Butte were relatively small (~0.5 m) compared to primary and antithetic offsets within the graben, and on the Flat Creek fan, scarp offsets ranged from ~0–1.7 m. Empirical regressions were used to calculate moment mag- nitudes associated with each fault system. In all three systems, moment magnitude (Mm), based on average and maximum scarp height, averaged Figure 1. Map showing the Jackson Hole valley with relevant ~Mm 6.6. However, based on scarp rupture length, fault locations and features. moment magnitudes were considerably less (~Mm 5.5). This study provides preliminary results based on topographic analysis of the faults. Future studies on specific fault systems are required to determine whether the faults are independently seismogenic or related to other tectonic sources in the area. INTRODUCTION The Jackson Hole valley is bound by the Teton Mountains to the west and the Gros Ventre Range to the east (fig. 1). Jackson Hole is a 71-km-long, asymmetric Tertiary structural basin in the hanging wall of the Holocene-active Teton fault. The Teton fault system on the eastern edge of the Teton Mountains has long been recognized as the most active fault system in the valley (White, 2006). However, the Jackson Hole valley also contains many other faults currently assigned ages ranging from Holocene to Late Quaternary (Machette and others, 2001a). The primary goal of this investigation is to evaluate a system of predominately westward-dipping late-Quaternary faults that form a distributed system of short, unconnected segments along the eastern edge of the valley. In general, the fault systems on the east side of the Jackson Hole valley comprise a zone of north-south trending dis- continuous, west-facing scarps. These distributed faults are described by two entries in the U.S. Geological Survey’s (USGS) Quaternary Fault and Fold Database and are made up of both Class A and Class B faults. The USGS designates faults that have an undefined source or unconfirmed Quaternary activity as Class B. Seismogenic faults with recognized Quaternary offset are designated as Class A. 1 Secondary faults in Jackson Hole valley (USGS fault No. 725) include Class B faults that are generally antithetic to the Teton fault (Machette and others, 2001a). The secondary faults include those at the Potholes, north of the Snake River, at Antelope Flats, west of Shadow Mountain, and near Flat Creek, within the National Elk Refuge (fig. 1). Faults south of Blacktail Butte (USGS fault No. 724) are recognized by the USGS as Class A late-Quater- nary faults (Pierce, 2001; fig. 1). Pierce notes that, similar to the Class B secondary faults (No. 725), the faults south of Blacktail Butte could also be secondary features related to a larger fault in the area. It is not clear why the faults south of Blacktail Butte are considered Class A faults while the other faults along the eastern Jackson Hole valley are designated as Class B. This study focuses on the magnitude of vertical surface offsets and the geomorphic expression of fault scarps at Antelope Flats, south of Blacktail Butte, and on the Flat Creek fan (fig. 1). Recently acquired light detecting and ranging (LiDAR) data for the Grand Teton National Park (2014) along with the most recent aerial photographs that maintain stereo coverage in the area (U.S. Department of Agriculture, 2004) provide data ideal to revisit prior work regarding these features. In particular, scarp topographic profiles and surface age estimates from previous geologic mapping are used to bracket offset events. PREVIOUS WORK Gilbert and others (1983) studied the Jackson Hole valley faults as part of a seismotectonic study of the Jackson Lake Dam for the U.S. Bureau of Reclamation. They found that faults south of Blacktail Butte offset loess deposits about 0.6 m (net) along the main scarp (Gilbert and others, 1983). Gilbert and others also report that the faults on the Flat Creek fan show 0.6 m of net displacement over a 2.7 km length. Gilbert and others (1983) recognized that the faults are distributed over a wide (1–2 km) area, but suggest because of their small net offset and short scarp lengths, the faults may be related to strong ground motions associated with another fault in the area. Faults found in Antelope Flats are mentioned briefly in the Gilbert report but are not described in detail. Geologic maps for the eastern portion of Jackson Hole include the Moose and Gros Venture Junction quadrangle maps at 1:24,000 scale (Love 2001a, Love 2001b, respectively). The Moose quadrangle map does not show the faults at Antelope Flats. However, the Gros Ventre Junction quadrangle map does show the extent of the fault south of Blacktail Butte and generalized faults on the Flat Creek fan. In 2000, Wong and others analyzed the seismic hazard for multiple dams in the area, including Island Park, Grassy Lake, and Jackson Lake dams. The report did not address the faults included in this report as they were considered too short to generate earthquakes (≤10 km). GEOLOGIC SETTING This region has undergone numerous episodes of deformation, including Sevier compression, Laramide uplift and compression, and Cenozoic Basin and Range extension. From the late-Tertiary to the present day, some of the Laramide and Sevier structural features have been overprinted or transected by north-south trending Tertiary, and in some cases Quaternary, high-angle normal faulting due to Basin and Range extension (Horberg and others, 1949). Cenozoic-aged normal faults coincide with north-northwest trending folds and thrust faults, which bound uplifts, creating range-front bounding faults that define a series of half-grabens. The Teton fault is the principal structure responsible for the Late Miocene to Holocene footwall uplift of the Teton Range and the hanging wall subsidence of the Jackson Hole basin (Smith and others, 1993). The Neogene Teton Mountains (fig. 1) are superimposed over the northwest portion of the older Gros Ventre Range (Smith and others, 1993). The Teton Range is in the Intermountain Seismic Belt (ISB), which is a major 2 active seismic belt extending 1,300 km from Arizona through Utah, eastern Idaho, western Wyoming, and western Montana. The range is a tilted block of Precambrian basement rocks and overlying Paleozoic sedimentary strata, including significant deposits of limestone and dolomite. The range displays a vertical uplift of more than 7 km, inferred from the highest sedimentary rock to the depth of the basement of approximately 5 km underneath Jackson Hole (Smith and others, 1993). The Gros Ventre Range bounds the eastern flank of
Load more

Recommended publications
  • Plant Species of Special Concern and Vascular Plant Flora of the National
    Plant Species of Special Concern and Vascular Plant Flora of the National Elk Refuge Prepared for the US Fish and Wildlife Service National Elk Refuge By Walter Fertig Wyoming Natural Diversity Database The Nature Conservancy 1604 Grand Avenue Laramie, WY 82070 February 28, 1998 Acknowledgements I would like to thank the following individuals for their assistance with this project: Jim Ozenberger, ecologist with the Jackson Ranger District of Bridger-Teton National Forest, for guiding me in his canoe on Flat Creek and for providing aerial photographs and lodging; Jennifer Whipple, Yellowstone National Park botanist, for field assistance and help with field identification of rare Carex species; Dr. David Cooper of Colorado State University, for sharing field information from his 1994 studies; Dr. Ron Hartman and Ernie Nelson of the Rocky Mountain Herbarium, for providing access to unmounted collections by Michele Potkin and others from the National Elk Refuge; Dr. Anton Reznicek of the University of Michigan, for confirming the identification of several problematic Carex specimens; Dr. Robert Dorn for confirming the identification of several vegetative Salix specimens; and lastly Bruce Smith and the staff of the National Elk Refuge for providing funding and logistical support and for allowing me free rein to roam the refuge for plants. 2 Table of Contents Page Introduction . 6 Study Area . 6 Methods . 8 Results . 10 Vascular Plant Flora of the National Elk Refuge . 10 Plant Species of Special Concern . 10 Species Summaries . 23 Aster borealis . 24 Astragalus terminalis . 26 Carex buxbaumii . 28 Carex parryana var. parryana . 30 Carex sartwellii . 32 Carex scirpoidea var. scirpiformis .
    [Show full text]
  • Paleontological Resources at Grand Teton National Park, Northwestern Wyoming Vincent L
    University of Wyoming National Park Service Research Center Annual Report Volume 22 22nd Annual Report, 1998 Article 7 1-1-1998 Paleontological Resources at Grand Teton National Park, Northwestern Wyoming Vincent L. Santucci National Park Service William P. Wall Georgia College and State University Follow this and additional works at: http://repository.uwyo.edu/uwnpsrc_reports Recommended Citation Santucci, Vincent L. and Wall, William P. (1998) "Paleontological Resources at Grand Teton National Park, Northwestern Wyoming," University of Wyoming National Park Service Research Center Annual Report: Vol. 22 , Article 7. Available at: http://repository.uwyo.edu/uwnpsrc_reports/vol22/iss1/7 This Grand Teton National Park Report is brought to you for free and open access by Wyoming Scholars Repository. It has been accepted for inclusion in University of Wyoming National Park Service Research Center Annual Report by an authorized editor of Wyoming Scholars Repository. For more information, please contact [email protected]. Santucci and Wall: Paleontological Resources at Grand Teton National Park, Northwest PALEONTOLOGICAL RESOURCES AT GRAND TETON NATIONAL PARK, NORTHWESTERN WYOMING + VINCENT L. SANTUCCI+ NATIONAL PARK SERVICE KEMMERER + WY WILLIAM P. WALL+ DEPARTMENT OF BIOLOGY GEORGIA COLLEGE AND STATE UNIVERSITY MILLEDGEVILLE + GA + ABSTRACT landscape, and though the last great ice masses melted 15 ,000 years ago, some re-established small Paleontological resources occur throughout glaciers still exist. the formations exposed in Grand Teton National Park. A comprehensive paleontological survey has This report provides a preliminary not been attempted previously at Grand Teton assessment of paleontological resources identified at National Park. Preliminary paleontologic resource Grand Teton National Park. data is given in this report in order to establish baseline data.
    [Show full text]
  • VITAL SIGNS 2016 This Report Is Made Possible Through Generous Support from Grand Teton National Park Foundation and Grand Teton Association
    Science and Resource Management National Park Service Grand Teton National Park U.S. Department of the Interior & John D. Rockefeller, Jr. Memorial Parkway GRAND TETON NATIONAL PARK & John D. Rockefeller, Jr. Memorial Parkway Natural and Cultural Resources VITAL SIGNS 2016 This report is made possible through generous support from Grand Teton National Park Foundation and Grand Teton Association. Science and Resource Managment Grand Teton National Park & John D. Rockefeller, Jr. Memorial Parkway P.O. Drawer 170 Moose, WY 83012 www.nps.gov/grte 2 Vital Signs 2016 • Grand Teton National Park Acknowledgments To supplement the work done by Grand Teton National Park staff, the following organizations provided data and/or analysis that were used in preparing this report: • Biodiversity Research Institute • Craighead Beringia South • Colorado State University, Federal Land Manager Environmental Database • Grand Teton Fire Management Program • Greater Yellowstone Inventory and Monitoring Network • Greater Yellowstone Whitebark Pine Monitoring Working Group • Interagency Grizzly Bear Study Team (U.S. Geological Survey–Biological Resources Division, National Park Service, U.S. Forest Service, and the states of Idaho, Montana, and Wyoming) • National Park Service Air Resources Division • National Park Service Northern Rockies Exotic Plant Management Team • Northern Rockies Conservation Cooperative • Sky Aviation • U.S. Fish and Wildlife Service, National Elk Refuge • U.S. Forest Service, Bridger Teton National Forest • U.S. Geological Survey, Northern
    [Show full text]
  • Draft Bison and Elk Management Plan
    CONTENTS CHAPTER 2. ALTERNATIVE MANAGEMENT PLANS Introduction...............................................................................................................................................................39 Criteria for Determining a Reasonable Range of Alternatives ................................................................39 Actions Independent of the Alternatives .....................................................................................................40 Elements Common to All Alternatives.........................................................................................................40 Structure of the Alternatives.........................................................................................................................41 Alternative 1: No Action..........................................................................................................................................42 Alternative 2: Minimal Management of Habitat and Populations, with Support for Migrations..................44 Alternative 3: Restore Habitat, Support Migration, and Phase Back Supplemental Feeding .....................46 Alternative 4: Adaptively Manage Habitat and Populations (Preferred Alternative)...................................48 Alternative 5: Restore Habitat, Improve Forage, and Continue Supplemental Feeding .............................50 Alternative 6: Restore Habitat, Adaptively Manage Populations, and Phase Out Supplemental Feeding 52 Alternative Comparison by Goal............................................................................................................................54
    [Show full text]
  • Chronic Wasting Disease Surveillance Jackson Elk Herd Unit 2015
    Chronic Wasting Disease Surveillance Jackson Elk Herd Unit 2015 Report prepared for the National Elk Refuge, U.S. Fish & Wildlife Service Prepared by Ben Wise, Brucellosis-Feedground-Habitat Biologist, WGFD February 18th, 2016 ____________________________________________________________________________________ The National Elk Refuge (NER) provided funds to the Wyoming Game and Fish Department (WGFD) to support Chronic Wasting Disease (CWD) surveillance in the Jackson elk herd and adjacent elk, deer, and moose herds during the 2015 hunting seasons. The funding was used to hire two temporary CWD technicians, one employed with the WGFD, and one employed by the National Elk Refuge from mid- September through December 2015. The WGFD technician logged 800 hours and 10,000 miles, mostly while conducting field contacts with hunters and pulling samples (medial retropharyngeal lymph nodes) from carcasses. Having two technicians allowed field presence nearly every day of open hunting seasons in the Jackson area, and helped maximize the number of samples collected from all species throughout the Jackson WGFD Region. The highest yielding method of collecting elk samples for subsequent CWD testing in the Jackson region comes from hunter contacts in the field, especially those within Grand Teton National Park (GTNP) and the NER. Hunter contacts are made throughout the fall in an effort to increase sample size and participation, and to educate hunters on CWD. NER parking areas and highly used locations in GTNP, such as the Kelly Hayfields and Blacktail Butte, are reliable places to make hunter contacts and collect samples. Frequent communication among NER law enforcement, elk retrieval operators and other WGFD personnel is essential for locating successful hunters soon after they’ve harvested their elk.
    [Show full text]
  • Naturalist Pocket Reference
    Table of Contents Naturalist Phone Numbers 1 Park info 5 Pocket GRTE Statistics 6 Reference Timeline 8 Name Origins 10 Mountains 12 Things to Do 19 Hiking Trails 20 Historic Areas 23 Wildlife Viewing 24 Visitor Centers 27 Driving Times 28 Natural History 31 Wildlife Statistics 32 Geology 36 Grand Teton Trees & Flowers 41 National Park Bears 45 revised 12/12 AM Weather, Wind Scale, Metric 46 Phone Numbers Other Emergency Avalanche Forecast 733-2664 Bridger-Teton Nat. Forest 739-5500 Dispatch 739-3301 Caribou-Targhee NF (208) 524-7500 Out of Park 911 Grand Targhee Resort 353-2300 Jackson Chamber of Comm. 733-3316 Recorded Information Jackson Fish Hatchery 733-2510 JH Airport 733-7682 Weather 739-3611 JH Mountain Resort 733-2292 Park Road Conditions 739-3682 Information Line 733-2291 Wyoming Roads 1-888-996-7623 National Elk Refuge 733-9212 511 Post Office – Jackson 733-3650 Park Road Construction 739-3614 Post Office – Moose 733-3336 Backcountry 739-3602 Post Office – Moran 543-2527 Campgrounds 739-3603 Snow King Resort 733-5200 Climbing 739-3604 St. John’s Hospital 733-3636 Elk Reduction 739-3681 Teton Co. Sheriff 733-2331 Information Packets 739-3600 Teton Science Schools 733-4765 Wyoming Game and Fish 733-2321 YELL Visitor Info. (307) 344-7381 Wyoming Highway Patrol 733-3869 YELL Roads (307) 344-2117 WYDOT Road Report 1-888-442-9090 YELL Fill Times (307) 344-2114 YELL Visitor Services 344-2107 YELL South Gate 543-2559 1 3 2 Concessions AMK Ranch 543-2463 Campgrounds - Colter Bay, Gros Ventre, Jenny Lake 543-2811 Campgrounds - Lizard Creek, Signal Mtn.
    [Show full text]
  • Identification of Interflow Pathways and Potential Wetland Sites in the Kelly Hayfields
    Marlow and Anderson: Identification of Interflow Pathways and Potential Wetland Sites 69 IDENTIFICATION OF INTERFLOW PATHWAYS AND POTENTIAL WETLAND SITES IN THE KELLY HAYFIELDS CLAYTON B. MARLOW DUSTIN ANDERSON ANIMAL AND RANGE SCIENCES MONTANA STATE UNIVERSITY BOZEMAN ABSTRACT Service Specialists decide if wetland recovery would In support of Grand Teton National Park be supported by the current hydrologic patterns, or if Service plans to restore the Kelly Hayfields to pre- extensive wetland reclamation should be part of the homesteading conditions an inventory of soils and Park‘s restoration plan for the Antelope Flats area. associated vegetation was conducted over a two year The study began in the spring of 2010 and continued period, 2010 and 2011. Measurements from 37 soil through the fall of 2011. During the study 28 soil pits pits and 19 associated vegetation descriptions were excavated and 9 bore holes drilled (mechanical revealed little evidence for the presence of riparian Giddings probe) seeking evidence for a persistent wetlands anywhere within the historic hayfields. The groundwater table which would have supported exception was a small area near the north eastern end historic wetlands in the Kelly Hayfield. Following of Blacktail Butte. Faint soil redoximorphic features the soil survey an extensive vegetation inventory was associated with about 5% wetland indicator plant conducted in late summer 2011 to identify the present cover implies the existence of riparian wetlands at the vegetation community structure and diversity time of homesteading. Differences in soil texture associated with the soil pits and bore holes. across the hayfields indicates that a mosaic of herbaceous and mountain big sagebrush/grass communities existed when agricultural conversion STUDY AREA began.
    [Show full text]
  • TABLE of CONTENTS ACKNOWLEDGEMENTS I Mule
    TABLE OF CONTENTS ACKNOWLEDGEMENTS i Mule Deer Targhee (MD101) – Areas 149 1 Wyoming Range (MD131) – Areas 134, 135, 143-145 3 Elk Targhee (EL101) – Areas 73 50 Jackson (EL102) – Areas 70-72, 74-83 52 Fall Creek (EL103) – Areas 84, 85 85 Afton (EL105) – Areas 88-91 95 Moose Targhee (MO101) – Areas 16, 37 105 Jackson (MO103) – Areas 7, 14, 15, 17-19, 28, 32 108 Bighorn Sheep Targhee (BS106) – Area 6 111 Jackson (BS107) – Area 7 145 Mountain Goat Palisades (MG101) – Areas 2, 4 153 Bison Jackson (BI101) – Area 2 156 Disease Monitoring 159 ACKNOWLEDGEMENT The field data contained in these reports is the result of the combined efforts of Jackson Region Wildlife Division personnel including District Wildlife Biologists, District Game Wardens, the Disease Biologist, the Wildlife Management Coordinator and Region Supervisor, and other Department personnel working at check stations and in the field. The authors wish to express their appreciation to all those who assisted in data collection. i 2019 - JCR Evaluation Form SPECIES: Mule Deer PERIOD: 6/1/2019 - 5/31/2020 HERD: MD101 - TARGHEE HUNT AREAS: 149 PREPARED BY: ALYSON COURTEMANCH 2014 - 2018 Average 2019 2020 Proposed Hunter Satisfaction Percent 56% 29% 60% Landowner Satisfaction Percent N/A N/A N/A Harvest: 23 9 25 Hunters: 93 47 50 Hunter Success: 25% 19% 50% Active Licenses: 93 47 50 Active License Success: 25% 19% 50% Recreation Days: 467 235 400 Days Per Animal: 20.3 26.1 16 Males per 100 Females: 0 0 Juveniles per 100 Females 0 0 Satisfaction Based Objective 60% Management Strategy: Recreational Percent population is above (+) or (-) objective: N/A Number of years population has been + or - objective in recent trend: 2 1 2020 HUNTING SEASONS TARGHEE MULE DEER HERD (MD101) Hunt Hunt Archery Dates Season Dates Quota Limitations Area Type Opens Closes Opens Closes 149 Gen Sep.
    [Show full text]
  • Impacts on Other Wildlife
    CONTENTS Impacts on Other Wildlife .....................................................................................................................................343 Overview .........................................................................................................................................................343 Threatened, Endangered, and Special Concern Species ..........................................................................343 Mammals .........................................................................................................................................................359 Birds.................................................................................................................................................................403 Amphibians .....................................................................................................................................................425 i CHAPTER 4. ENVIRONMENTAL CONSEQUENCES [This page intentionally left blank.] ii IMPACTS ON OTHER WILDLIFE OVERVIEW dance of these species and the ecosystems on which they depend. The project area is home to a variety of wildlife and considered to be part of the most ecologically intact ecosystem in the lower 48 states. Bison and METHODOLOGY USED TO ANALYZE EFFECTS elk serve as food sources for predators and scav- The process for assessing impacts to threatened, engers and compete for habitat with other ungu- endangered, and sensitive species is essentially lates. They could also alter
    [Show full text]
  • Draft Comprehensive Conservation Plan and Environmental Assessment National Elk Refuge
    Draft Comprehensive Conservation Plan and Environmental Assessment National Elk Refuge Wyoming August 2014 Prepared by National Elk Refuge P.O. Box 510 Jackson, Wyoming 83001 307 / 733 9212 U.S. Fish and Wildlife Service Region 6, Mountain-Prairie Region Division of Refuge Planning 134 Union Boulevard, Suite 300 Lakewood, Colorado 80228 303 / 236 8145 CITATION U.S. Fish and Wildlife Service. 2014. Comprehensive conservation plan—National Elk Refuge, Wyoming. Lakewood, CO: U.S. Department of the Interior, Fish and Wildlife Service. 287 p. Contents Summary .........................................................................................XI Abbreviations .....................................................................................XVII CHAPTER 1—Introduction.........................................................................1 1.1 Purpose and Need for the Plan. .3 The Decision to be Made...........................................................................3 1.2 The U.S. Fish and Wildlife Service and the National Wildlife Refuge System..........................3 U.S. Fish and Wildlife Service .......................................................................3 National Wildlife Refuge System .....................................................................4 1.3 National and Regional Mandates ................................................................5 1.4 Refuge Contributions to Regional and National Plans ..............................................5 Conserving the Future .............................................................................5
    [Show full text]
  • The Ecological Role of Fire in the Jackson Hole Area, Northwestern Wyoming
    Utah State University DigitalCommons@USU Quinney Natural Resources Research Library, The Bark Beetles, Fuels, and Fire Bibliography S.J. and Jessie E. 1973 The Ecological Role of Fire in the Jackson Hole Area, Northwestern Wyoming Lloyd L. Loope George E. Gruell Follow this and additional works at: https://digitalcommons.usu.edu/barkbeetles Part of the Ecology and Evolutionary Biology Commons, Entomology Commons, Forest Biology Commons, Forest Management Commons, and the Wood Science and Pulp, Paper Technology Commons Recommended Citation Loope, L. and Gruell, G. (1973). Ecological role of fire in the Jackson Hole Area, northwestern Wyoming. Quaternary Research, 3(3): 425-443. This Article is brought to you for free and open access by the Quinney Natural Resources Research Library, S.J. and Jessie E. at DigitalCommons@USU. It has been accepted for inclusion in The Bark Beetles, Fuels, and Fire Bibliography by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. QUATERNARY RESEARCH 3, 425443 (1973) The Ecological Role of Fire in the Jackson Hole Area, Northwestern Wyoming LLOYD L. LOOPER AND GEORGE E. GRUELL~ Received March 20, 1973 Fire-history investigations in the Jackson Hole area of northwestern Wyoming reveal that most current stands of aspen and lodgepole pine regenerated following extensive fires between 1840 and 1890 and that widespread fires occurred in the 1600s and 1700s. White man’s major effect on the fire incidence has been the successful suppression during the past 39-80 yr. Successional changes in the absence of fire include the deterioration of aspen stands, massive invasions of subalpine fir in lodgepole pine stands, great increase in conifer cover, heavy fuel buildups in lodgepole pine and Douglas fir stands, and increase in sagebrush and other shrubs.
    [Show full text]
  • Contribution of Prehistoric Bison Studies to Modern Bison Management
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Great Plains Research: A Journal of Natural and Social Sciences Great Plains Studies, Center for Spring 2001 What the Past Can Provide: Contribution of Prehistoric Bison Studies to Modern Bison Management Kenneth Cannon University of Nebraska - Lincoln Follow this and additional works at: https://digitalcommons.unl.edu/greatplainsresearch Part of the Other International and Area Studies Commons Cannon, Kenneth, "What the Past Can Provide: Contribution of Prehistoric Bison Studies to Modern Bison Management" (2001). Great Plains Research: A Journal of Natural and Social Sciences. 540. https://digitalcommons.unl.edu/greatplainsresearch/540 This Article is brought to you for free and open access by the Great Plains Studies, Center for at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Great Plains Research: A Journal of Natural and Social Sciences by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. Great Plains Research 11 (Spring 2001): 145-74 © Copyright by the Center for Great Plains Studies WHAT THE PAST CAN PROVIDE: CONTRIBUTION OF PREHISTORIC BISON STUDIES TO MODERN BISON MANAGEMENT Kenneth P. Cannon Department of Geography University ofNebraska Lincoln, Nebraska 68588-0135 and Midwest Archeological Center Federal Building Lincoln, Nebraska 68508-3873 [email protected] ABSTRACT-For over 100 years, bison in the Greater Yellowstone Area have been managed intensely. Even during the years of "natural regulation," bison herds have been heavily managed by culling. One of the fundamental goals of the plan for the Greater Yellowstone Area is to maintain the ecosystem's integrity using sound science. In order to reach this goal, it must be recognized that it is a dynamic system, continually undergoing change.
    [Show full text]