An Inventory of Recreation in the Greater Yellowstone Ecosystem INTRODUCTION

Total Page:16

File Type:pdf, Size:1020Kb

An Inventory of Recreation in the Greater Yellowstone Ecosystem INTRODUCTION AN INVENTORY OF RECREATION IN THE GREATER YELLOWSTONE ECOSYSTEM INTRODUCTION The Greater Yellowstone Ecosystem (GYE) is one of the largest, intact temperate zone ecosystems on earth, with all its native wildlife. The 23 million acre GYE is characterized by rich wildlife and fishery resources, wild landscapes that provide unique opportunities for solitude, and massive expanses of public lands. As a result, outdoor recreation plays an important economic and social role in Greater Yellowstone. Communities like Teton Valley, ID have shifted from an agriculturally based economy to one driven largely by recreation and tourism. In booming western communities like Bozeman, MT, the quality of life provided by access to healthy public lands and world class outdoor recreation resources has attracted a large amount of skill, talent, and new business opportunity (Rasker 2012). As Greater Yellowstone grows in popularity, many are concerned that public land managers will be increasingly challenged to find balance between accommodating opportunities for new and better recreational experiences, while also protecting the natural resources and wild character that make the GYE ecologically unique and attractive for outdoor recreationists. Some of the major challenges land managers are facing are damage to soil and watersheds, increases in exotic species, wildlife habitat fragmentation, crowding, noise, loss of wild character, and conflicts among user groups (GYCC 2006). Urban interface areas are growing, environmental impacts of recreation are increasing, and public interest in recreational opportunity is rising (USFS 2015). At the same time, infrastructure condition is declining, and agency budgets continue to decrease (USFS 2015). Despite growing pressure on recreation managers resulting from population growth and changing technologies, Greater Yellowstone is unique, and recreation must be considered in this context (GYCC 2006). Some argue that the old golden rule of the outdoor recreation community, place first, is fading and needs to be re-invigorated (Solomon 2016). Additionally, outdoor recreation faces threats in the future; some estimate the recreation sector of the Montana economy will be heavily impacted by climate change due to increases in wildfire frequency and severity, lower, warmer stream flows, and degraded snow conditions (Federation et al. 2015). At the Greater Yellowstone Coalition, our mission is to work with people to protect the lands, waters, and wildlife of Greater Yellowstone. We are outdoor recreationists, and recognize the important role that outdoor recreation plays in the health, well- being, and economic prosperity of places like the GYE. In light of the potential challenges that rising visitation, regional population growth, and limited agency resources might pose for balancing rising recreational demands with conservation of the resources that make the GYE special, we want to take steps to ensure that all stakeholders are moving toward working in an integrated fashion to responsibly plan for outdoor recreational access. We identified the need for an inventory of recreational use patterns, benefits, and challenges as being an important first step. A shared vision for recreation in the GYE must start with a common understanding of what we know and don’t know about the state of outdoor recreation in this region. The purpose of this report is to identify what we know about: 1) where, how, and to what extent people are recreating in the GYE, 2) the benefits and impacts of recreation in the GYE, and 3) examples of solutions to challenges at the intersection of conservation values and recreation priorities. GREATER YELLOWSTONE ECOSYSTEM RECREATION INVENTORY . 1 . BACKGROUND AND SUMMARY Recently, increasing demand for recreation access has generated friction between recreation and conservation groups. Efforts to change the Wilderness Act to accommodate mountain biking access, and a push for a bill to allow backcountry paddling in Yellowstone and Grand Teton National Parks are just a couple examples. A wedge between conservation and recreation interests is detrimental as we face the need to work together now more than ever. At the same time, MT Governor Steve Bullock has developed a state office of outdoor recreation, in recognition of the crucial role our public lands play in the economic prosperity of the state. With threats to public lands and growth in Greater Yellowstone, alliances between recreationists and conservationists will be key to maintaining high quality recreational experiences and ensuring the GYE remains intact well into the future. Recreation and conservation are inherently tied. Often, outdoor recreation fosters appreciation for the natural world. Our outdoor experiences in the GYE are enhanced by healthy environments. The outdoor industry recognizes public lands as a crucial investment. For example, the 2017 Outdoor Recreation Economy report states, “America’s land and water underpin the American spirit. Investments in outdoor recreation on public lands and waters earn compounding returns in the form of healthier communities, healthier economies, and healthier people.” Many of our nation’s most noteworthy conservationists such as John Muir, John Wesley Powell and Teddy Roosevelt were avid outdoor adventurers. Today, modern day conservation and public land advocates are linked to the outdoor industry such as Patagonia’s Yvon Chouinard, North Face founder Doug Tompkins or Black Diamond’s Peter Metcalf. The Outdoor Industry Association’s policy agenda includes defending important land protection laws like the Wilderness Act and the Antiquities Act, and protecting policies and processes that facilitate stewardship of public lands in the United States (outdoorindustry.org). The outdoor industry is proving to be an increasingly important force. The Outdoor Recreation Jobs and Economic Impact (or REC) Act of 2016 mandates consideration of outdoor recreation as part of the U.S. economy, and illustrates the growing role of the outdoor recreation industry in U.S. society. To build the foundation for a shared understanding between conservation and recreation interests in the GYE, we attempted to describe the current state of outdoor recreation in the region. To do this, we conducted a thorough literature review of recreation impacts, benefits and management strategies, held interviews with land managers and recreational users around the region, and hosted 2 roundtable workshops with recreational users in communities of the GYE. Additionally, we compiled and synthesized existing recreational use information, and collated all existing recreation related geospatial data from the major state and federal public land and wildlife management agencies. We developed a set of maps to depict the intersection of recreation and conservation priorities in the GYE, that we hope will aid the discussion about what we do and don’t know about recreational use patterns and potential challenges. From a coarse perspective, participation in outdoor recreation and visitation to public lands of the GYE is large. Urban areas of the region are growing rapidly. This growth might be contributing to rising participation in recreational activity. However, with the exception of Yellowstone and Grand Teton National Parks, there are not enough years of data on recreation related GREATER YELLOWSTONE ECOSYSTEM RECREATION INVENTORY . 2 . visitation to decipher trends. At relevant decision making scales, we found that recreational use data (patterns, intensity, etc.) are sparse in the GYE. At the ranger district level of the U.S. Forest Service, decisions about recreation management are mostly based on anecdotal information, such as perceived recreational demand rather than recreational use counts. The Madison and Gallatin mountain ranges outside Bozeman and Big Sky, MT, Teton Region (ID and WY), and Cody, WY are hotspots of recreational resources and opportunity. Information shown in the interactive maps of digital applications like Adventure Projects corroborates these hotspots as areas of high recreational demand relative to the rest of Greater Yellowstone. Qualitative insights from interviews indicate a simple look at where recreation infrastructure is concentrated on the landscape may not capture other areas of high demand (e.g. outside of Red Lodge, MT). There is a pressing need for quantitative and spatially explicit information to back generalizations about where, how, and to what extent people are recreating in Greater Yellowstone. The good news is there is recognition that the growth and prosperity in some of the urban interface areas of the GYE is attributable to spectacular public lands and world class recreational opportunities. In some cases, the economic benefit stems directly from the outdoor industry being the primary driver of a community’s economy. In others, the prosperity is tied to the place attracting a highly talented work force, new business, and growth in the technology industry (Rasker 2012). Additionally, we found there is general consensus that outdoor recreationists are increasingly engaged in advocating for the public land issues that matter to them; this engagement will be important to conservation of the GYE for generations to come. In general, we found challenges at the intersection of conservation and recreation exist around the GYE, but concerns about increasing pressures are most prevalent in the major population centers of the region (i.e. Bozeman, MT and Jackson, WY, which respectively sit within counties
Recommended publications
  • Pinedale Region Angler Newsletter
    Wyoming Game and Fish Department 2013 Edition Volume 9 Pinedale Region Angler Newsletter Inside this issue: Burbot Research to Begin in 1 2013 New Fork River Access Im- 2 provements Thanks for reading the 2013 version of Pinedale ND South Dakota Know Your Natives: Northern 3 Region Angler Newsletter. This newsletter is Yellowstone Montana Leatherside intended for everyone interested in the aquatic Natl. Park Sheridan resources in the Pinedale area. The resources we Cody Fire and Fisheries 4 Gillette Idaho manage belong to all of us. Jackson Gannett Peak Wyoming Riverton Nebraska Watercraft Inspections in 2013 6 The Pinedale Region encompasses the Upper Pinedale Casper Green River Drainage (upstream of Fontenelle Lander Elbow Lake 7 Rawlins Reservoir) and parts of the Bear River drainage Green Rock Springs Cheyenne 2013 Calendar 8 near Cokeville (see map). River Laramie Colorado Utah 120 mi Pinedale Region Map Pinedale Region Fisheries Staff: Fisheries Management Burbot Research Begins on the Green River in 2013 Hilda Sexauer Fisheries Supervisor Pete Cavalli Fisheries Biologist Darren Rhea Fisheries Biologist Burbot, also known as “ling”, are a species of fisheries. Adult burbot are a voracious preda- fish in the cod family with a native range that tor and prey almost exclusively on other fish or Aquatic Habitat extends into portions of north-central Wyoming crayfish. Important sport fisheries in Flaming Floyd Roadifer Habitat Biologist including the Wind and Bighorn River drain- Gorge, Fontenelle, and Big Sandy reservoirs ages. While most members of the cod family have seen dramatic changes to some sport fish Spawning reside in the ocean, this specialized fish has and important forage fish communities.
    [Show full text]
  • WPLI Resolution
    Matters from Staff Agenda Item # 17 Board of County Commissioners ‐ Staff Report Meeting Date: 11/13/2018 Presenter: Alyssa Watkins Submitting Dept: Administration Subject: Consideration of Approval of WPLI Resolution Statement / Purpose: Consideration of a resolution proclaiming conservation principles for US Forest Service Lands in Teton County as a final recommendation of the Wyoming Public Lands Initiative (WPLI) process. Background / Description (Pros & Cons): In 2015, the Wyoming County Commissioners Association (WCCA) established the Wyoming Public Lands Initiative (WPLI) to develop a proposed management recommendation for the Wilderness Study Areas (WSAs) in Wyoming, and where possible, pursue other public land management issues and opportunities affecting Wyoming’s landscape. In 2016, Teton County elected to participate in the WPLI process and appointed a 21‐person Advisory Committee to consider the Shoal Creek and Palisades WSAs. Committee meetings were facilitated by the Ruckelshaus Institute (a division of the University of Wyoming’s Haub School of Environment and Natural Resources). Ultimately the Committee submitted a number of proposals, at varying times, to the BCC for consideration. Although none of the formal proposals submitted by the Teton County WPLI Committee were advanced by the Board of County Commissioners, the Board did formally move to recognize the common ground established in each of the Committee’s original three proposals as presented on August 20, 2018. The related motion stated that the Board chose to recognize as a resolution or as part of its WPLI recommendation, that all members of the WPLI advisory committee unanimously agree that within the Teton County public lands, protection of wildlife is a priority and that there would be no new roads, no new timber harvest except where necessary to support healthy forest initiatives, no new mineral extraction excepting gravel, no oil and gas exploration or development.
    [Show full text]
  • U.S. Department of the Interior U.S. Geological
    U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S. Forest Service in Fiscal Years 1996 and 1997 by Anna B. Wilson Open File Report OF 97-535 1997 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey (USGS) editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CONTENTS page INTRODUCTION ................................................................... 1 COLORADO ...................................................................... 2 Arapaho National Forest (administered by White River National Forest) Slate Creek .................................................................. 3 Arapaho and Roosevelt National Forests Winter Park Properties (Raintree) ............................................... 15 Gunnison and White River National Forests Mountain Coal Company ...................................................... 17 Pike National Forest Land Use Resource Center .................................................... 28 Pike and San Isabel National Forests Shepard and Associates ....................................................... 36 Roosevelt National Forest Larry and Vi Carpenter ....................................................... 52 Routt National Forest Smith Rancho ............................................................... 55 San Juan National
    [Show full text]
  • Conservation in Yellowstone National Park Final Report on the COVER Wolverine Tracks in the Greater Yellowstone Ecosystem
    Wolverine Conservation in Yellowstone National Park Final Report ON THE COVER Wolverine tracks in the Greater Yellowstone Ecosystem. Photo by Jason Wilmot. Wolverine Conservation in Yellowstone National Park Final Report Authors John Squires Kerry Murphy US Forest Service US Forest Service Rocky Mountain Research Station Jackson Ranger District 800 East Beckwith Avenue PO Box 25 Missoula, Montana 59801 Jackson, Wyoming 83001 [email protected] [email protected] (formerly Yellowstone Center for Resources, With contributions from Yellowstone National Park, Wyoming) Robert M. Inman Wildlife Conservation Society Jason Wilmot Wolverine Program Field Office Northern Rockies Conservation Cooperative 222 East Main Street PO Box 2705 Lone Elk 3B Jackson, Wyoming 83001 Ennis, Montana 59729 [email protected] [email protected] Jeff Copeland Mark L. Packila US Forest Service Wildlife Conservation Society Rocky Mountain Research Station Wolverine Program Field Office 800 East Beckwith Avenue 222 East Main Street Missoula, Montana 59801 Lone Elk 3B [email protected] Ennis, Montana 59729 [email protected] Dan Tyers US Forest Service Doug McWhirter Gardiner Ranger District Wyoming Game and Fish Regional Office PO Box 5 2820 State Highway 120 Gardiner, Montana 59030 Cody, Wyoming 82414 [email protected] National Park Service Yellowstone National Park Yellowstone Center for Resources Yellowstone National Park, Wyoming YCR-2011-02 March 2011 Suggested citation: Murphy, K., J. Wilmot, J. Copeland, D. Tyers, J. Squires, R. M. Inman, M. L. Packila, D. McWhirter. 2011. Wolverine conservation in Yellowstone National Park: Final report. YCR-2011-02. National Park Service, Yellowstone National Park, Yellowstone Center for Resources, Yellowstone National Park, Wyoming.
    [Show full text]
  • Fire Danger Operating Plan
    Teton Interagency Fire Danger Operating Plan May 2018 Teton Interagency Fire Preparedness Plan Page 2 THIS PAGE INTENTIONALLY BLANK Teton Interagency Fire Preparedness Plan Page 3 THIS PAGE INTENTIONALLY BLANK Teton Interagency Fire Preparedness Plan Page 5 Table of Contents I. Introduction .......................................................................................................................................... 8 A. Purpose ............................................................................................................................................. 8 B. Operating Plan Objectives................................................................................................................. 8 C. Fire Danger Operating Plan ............................................................................................................... 8 D. Policy and Guidance ........................................................................................................................ 10 II. Fire Danger Planning Area Inventory and Analysis ............................................................................. 11 A. Fire Danger Rating Areas................................................................................................................. 11 B. Administrative Units ....................................................................................................................... 16 C. Weather Stations ...........................................................................................................................
    [Show full text]
  • Exploring Grand Teton National Park
    05 542850 Ch05.qxd 1/26/04 9:25 AM Page 107 5 Exploring Grand Teton National Park Although Grand Teton National Park is much smaller than Yel- lowstone, there is much more to it than just its peaks, a dozen of which climb to elevations greater than 12,000 feet. The park’s size— 54 miles long, from north to south—allows visitors to get a good look at the highlights in a day or two. But you’d be missing a great deal: the beautiful views from its trails, an exciting float on the Snake River, the watersports paradise that is Jackson Lake. Whether your trip is half a day or 2 weeks, the park’s proximity to the town of Jackson allows for an interesting trip that combines the outdoors with the urbane. You can descend Grand Teton and be living it up at the Million Dollar Cowboy Bar or dining in a fine restaurant that evening. The next day, you can return to the peace of the park without much effort at all. 1 Essentials ACCESS/ENTRY POINTS Grand Teton National Park runs along a north-south axis, bordered on the west by the omnipresent Teton Range. Teton Park Road, the primary thoroughfare, skirts along the lakes at the mountains’ base. From the north, you can enter the park from Yellowstone National Park, which is linked to Grand Teton by the John D. Rockefeller Jr. Memorial Parkway (U.S. Hwy. 89/191/287), an 8-mile stretch of highway, along which you might see wildlife through the trees, some still bare and black- ened from the 1988 fires.
    [Show full text]
  • Mineral Occurrence and Development Potential Report Rawlins Resource
    CONTENTS 1.0 INTRODUCTION......................................................................................................................1-1 1.1 Purpose of Report ............................................................................................................1-1 1.2 Lands Involved and Record Data ....................................................................................1-2 2.0 DESCRIPTION OF GEOLOGY ...............................................................................................2-1 2.1 Physiography....................................................................................................................2-1 2.2 Stratigraphy ......................................................................................................................2-3 2.2.1 Precambrian Era....................................................................................................2-3 2.2.2 Paleozoic Era ........................................................................................................2-3 2.2.2.1 Cambrian System...................................................................................2-3 2.2.2.2 Ordovician, Silurian, and Devonian Systems ........................................2-5 2.2.2.3 Mississippian System.............................................................................2-5 2.2.2.4 Pennsylvanian System...........................................................................2-5 2.2.2.5 Permian System.....................................................................................2-6
    [Show full text]
  • Status of Plant Species of Special Concern in US Forest Service
    Status of Plant Species of Special Concern In US Forest Service Region 4 In Wyoming Report prepared for the US Forest Service By Walter Fertig Wyoming Natural Diversity Database University of Wyoming PO Box 3381 Laramie, WY 82071 20 January 2000 INTRODUCTION The US Forest Service is directed by the Endangered Species Act (ESA) and internal policy (through the Forest Service Manual) to manage for listed and candidate Threatened and Endangered plant species on lands under its jurisdiction. The Intermountain Region of the Forest Service (USFS Region 4) has developed a Sensitive species policy to address the management needs of rare plants that might qualify for listing under the ESA (Joslin 1994). The objective of this policy is to prevent Forest Service actions from contributing to the further endangerment of Sensitive species and their subsequent listing under the ESA. In addition, the Forest Service is required to manage for other rare species and biological diversity under provisions of the National Forest Management Act. The current Sensitive plant species list for Region 4 (covering Ashley, Bridger-Teton, Caribou, Targhee, and Wasatch-Cache National Forests and Flaming Gorge National Recreation Area in Wyoming) was last revised in 1994 (Joslin 1994). Field studies by botanists with the Forest Service, Rocky Mountain Herbarium, Wyoming Natural Diversity Database (WYNDD), and private consulting firms since 1994 have shown that several currently listed species may no longer warrant Sensitive designation, while some new species should be considered for listing. Region 4 is currently reviewing its Sensitive plant list and criteria for listing. This report has been prepared to provide baseline information on the statewide distribution and abundance of 127 plants listed as “species of special concern” by WYNDD (Table 1) (Fertig and Beauvais 1999).
    [Show full text]
  • Grand Teton National Park Grand Teton Guide Winter Wildlife
    The official newspaper of Grand Teton National Park Grand Teton Guide & John D. Rockefeller, Jr. Winter 2014-2015 (November–April) Memorial Parkway Welcome to Grand Teton National Park FEW LANDSCAPES IN THE WORLD are as more recent frontier settlement and today’s other sites in the National Park System, Grand striking and memorable as that of Grand Teton adventure seekers. Teton preserves a piece of America’s natural and National Park. Rising abruptly from the valley cultural heritage for future generations. floor, the Teton Range offers a testament to the This spectacular mountain range and the desire power and complexity of nature. The mountains, to protect it resulted in the establishment of While you are here, take a moment to put your valleys, lakes, rivers and skies are home to diverse Grand Teton National Park in 1929. Through cares aside: take a scenic drive, celebrate winter and abundant plants and animals. the vision and generous philanthropy of John D. by skiing or snowshoeing, and lose yourself to Rockefeller, Jr. and others, additional lands were the power of this place. People have been living in the shadow of the added to form the present day park in 1950. Teton Range for more than 11,000 years. The We hope you will be refreshed and restored human history of this area is extensive, beginning Grand Teton National Park is truly a unique place. during your visit, and stay connected to this with American Indian prehistoric life, continuing With thoughtful use and careful management, it magnificent landscape long after you have with the early Euro-American explorers, the will remain so for generations to come.
    [Show full text]
  • Sensitive and Rare Plant Species Inventory in the Salt River and Wyoming Ranges, Bridger-Teton National Forest
    Sensitive and Rare Plant Species Inventory in the Salt River and Wyoming Ranges, Bridger-Teton National Forest Prepared for Bridger-Teton National Forest P.O. Box 1888 Jackson, WY 83001 by Bonnie Heidel Wyoming Natural Diversity Database University of Wyoming Dept 3381, 1000 E. University Avenue University of Wyoming Laramie, WY 21 February 2012 Cooperative Agreement No. 07-CS-11040300-019 ABSTRACT Three sensitive and two other Wyoming species of concern were inventoried in the Wyoming and Salt River Ranges at over 20 locations. The results provided a significant set of trend data for Payson’s milkvetch (Astragalus paysonii), expanded the known distribution of Robbin’s milkvetch (Astragalus robbinsii var. minor), and relocated and expanded the local distributions of three calciphilic species at select sites as a springboard for expanded surveys. Results to date are presented with the rest of species’ information for sensitive species program reference. This report is submitted as an interim report representing the format of a final report. Tentative priorities for 2012 work include new Payson’s milkvetch surveys in major recent wildfires, and expanded Rockcress draba (Draba globosa) surveys, both intended to fill key gaps in status information that contribute to maintenance of sensitive plant resources and information on the Forest. ACKNOWLEDGEMENTS All 2011 field surveys of Payson’s milkvetch (Astragalus paysonii) were conducted by Klara Varga. These and the rest of 2011 surveys built on the 2010 work of Hollis Marriott and the earlier work of she and Walter Fertig as lead botanists of Wyoming Natural Diversity Database. This project was initially coordinated by Faith Ryan (Bridger-Teton National Forest), with the current coordination and consultation of Gary Hanvey and Tyler Johnson.
    [Show full text]
  • Reviewing Officer for Thomas Tidwell, Chief of the U. S. Forest Service
    Reviewing Officer for Thomas Tidwell, Chief of the U. S. Forest Service Attn: EMC Administrative Reviews 1400 Independence Avenue SW, Mailstop 1104 Washington, DC 20250-1104 Dear U. S. Forest Service Chief Thomas Tidwell FOREST SERVICE COMMENTS Thank you for this opportunity to comment on the proposed Shoshone National Forest Plan and addendum Environmental Impact Statement (EIS). As a native of Wyoming and long-time rancher and back country outfitter the Shoshone has been of great personal importance to me and my family. My mother and father, an early physician in the Cody country since 1940, acquired the 7D Ranch in Sunlight Basin in the 1950s. And I personally own a working cattle ranch located on the Greybull River upstream of its junction with the Wood River. My comments center on 5 areas: 1. Motorized use in Francs Peak and Wood River. 2. Illegal mountain bike trail in the Dunoir Special Management Unit 3. The need for recommendations in the plan for additional wilderness designations 4. Wild & Scenic Rivers 5. Enforcement 1. Proposed motorized use in the Wood River and Francs Peak area. This critical high country habitat gives protection for the Grizzly, Mountain Sheep, bird life including blue grouse, ptarmigan, lynx and even the possibility of expanded range for elusive wolverine. Francs Peak itself is the highest of all mountains in the Absaroka Range. The trails proposed the the local ORV organization for year-round motorized vehicles would impact 37,000 acres in the Wood River and 5,900 acres in Francs Peak for winterized use. The new motorized management areas that the Forest Service proposes would significantly impact the vast majority of the Wood River roadless area and roughly a third of the Francs Peak roadless area.
    [Show full text]
  • Mississippian-Pennsylvanian Boundary Problems in the Rocky Mountain Region
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 7-1948 Mississippian-Pennsylvanian Boundary Problems In The Rocky Mountain Region James Steele Williams United States Geological Survey Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Williams, James Steele, "Mississippian-Pennsylvanian Boundary Problems In The Rocky Mountain Region" (1948). USGS Staff -- Published Research. 502. https://digitalcommons.unl.edu/usgsstaffpub/502 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. The Journal of Geology, Vol. 56, No. 4, Jul., 1948 MISSISSIPPIAN-PENNSYLVANIAN BOUNDARY PROBLEMS IN THE ROCKY MOUNTAIN REGION' JAMES STEELE WILLIAMS United States Geological Survey ABSTRACT A variety of paleontologic and stratigraphic problems are presented by rocks near the Mississippian- Pennsylvanian boundary in the central and northern Rocky Mountains. Stratigraphic sections of these rocks show diverse interpretations of fundamental concepts of stratigraphy and paleontology. In many places where Upper Mississippian rocks directly underlie Pennsylvanian rocks it is difficult to determine the precise location of the boundary between these units. Formations that straddle the boundary are very useful and satisfactory over large areas. Most geologists use various types of lithologic criteria to distinguish forma- tions, but some appear to rely mainly on faunal data, unconformities, or attempts to trace prominent beds. More uniformity in criteria than now exists for the delimitation of formations is desirable.
    [Show full text]