DOCSLIB.ORG

Draft Forest Plan

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

United States Department of Agriculture Santa Fe National Forest Draft Land Management Plan Rio Arriba, San Miguel, Sandoval, Santa Fe, Mora, and Los Alamos Counties, New Mexico Forest Santa Fe Southwestern Region MB-R3-10-28 Service National Forest June 2019 Cover photo: Santa Fe National Forest visitors camping under the stars in the Pecos Ranger District. In accordance with Federal civil rights law and U.S. Department of Agriculture (USDA) civil rights regulations and policies, the USDA, its Agencies, offices, and employees, and institutions participating in or administering USDA programs are prohibited from discriminating based on race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, family/parental status, income derived from a public assistance program, political beliefs, or reprisal or retaliation for prior civil rights activity, in any program or activity conducted or funded by USDA (not all bases apply to all programs). Remedies and complaint filing deadlines vary by program or incident. Persons with disabilities who require alternative means of communication for program information (e.g., Braille, large print, audiotape, American Sign Language, etc.) should contact the responsible Agency or USDA’s TARGET Center at (202) 720-2600 (voice and TTY) or contact USDA through the Federal Relay Service at (800) 877-8339. Additionally, program information may be made available in languages other than English. To file a program discrimination complaint, complete the USDA Program Discrimination Complaint Form, AD-3027, found online at http://www.ascr.usda.gov/complaint_filing_cust.html and at any USDA office or write a letter addressed to USDA and provide in the letter all of the information requested in the form. To request a copy of the complaint form, call (866) 632-9992. Submit your completed form or letter to USDA by: (1) mail: U.S. Department of Agriculture, Office of the Assistant Secretary for Civil Rights, 1400 Independence Avenue, SW, Washington, D.C. 20250-9410; (2) fax: (202) 690-7442; or (3) email: [email protected]. USDA is an equal opportunity provider, employer and lender. Santa Fe National Forest Draft Land Management Plan Rio Arriba, San Miguel, Sandoval, Santa Fe, Mora, and Los Alamos Counties, New Mexico Responsible Official: James E. Melonas, Forest Supervisor Santa Fe National Forest 11 Forest Lane Santa Fe, NM 87508 For Additional Information: Jennifer Cramer, Forest Planner Santa Fe National Forest 11 Forest Lane Santa Fe, NM 87508 505-438-5442 [email protected] www.fs.usda.gov/goto/santafeforestplan DRAFT Land Management Plan Acronyms AML appropriate management level NHPA National Historic Preservation Act BLM Bureau of Land Management NM New Mexico BMP best management practice NMAAQS New Mexico ambient air quality standards CDNST Continental Divide National Scenic Trail NMDA New Mexico Department of Agriculture CEQ Council on Environmental Quality NMDGF New Mexico Department of Game CFR Code of Federal Regulations and Fish CRMP Comprehensive river management plan NMED New Mexico Environment CSU controlled surface use Department CWD coarse woody debris NPS National Park Service CWPP County Wildfire Protection Plan NSO no surface occupancy dbh diameter at breast height OHV off-highway vehicle EPA Environmental Protection Agency ORV outstandingly remarkable value ERU ecological response unit PM particulate matter ESA Endangered Species Act RD Ranger District FSH Forest Service Handbook RMZ riparian management zone HFRA Healthy Forest Restoration Act ROS recreation opportunity spectrum HUC Hydrologic Unit Code SCC species of conservation concern IPM integrated pest management TES Terrestrial Ecosystem Survey MIST minimum impact suppression TEU terrestrial ecosystem unit techniques TMDL total maximum daily load ML maintenance level USDA United States Department of MMCF million cubic feet Agriculture MOU memorandum of understanding USDI United States Department of the MVUM motor vehicle use map Interior NAAQS national ambient air quality standards USFWS United States Fish and Wildlife Service NAGPRA Native American Graves Protection and Repatriation Act WCF Watershed Condition Framework NEPA National Environmental Policy Act WSP Wilderness Stewardship Performance NF National Forest WUI wildland-urban interface NFS National Forest System Santa Fe National Forest i DRAFT Land Management Plan Table of Contents Acronyms ........................................................................................................................................... i Chapter 1. Introduction ......................................................................................................................... 1 Forest Plan Organization .................................................................................................................. 1 Purpose of the Forest Plan ................................................................................................................ 2 Description of the Plan Area ............................................................................................................. 3 Geographical and Biophysical Context ......................................................................................... 3 Historical Context ......................................................................................................................... 6 Distinctive Roles and Contributions of the Santa Fe National Forest ........................................... 8 Need for Changing the 1987 Forest Plan ........................................................................................ 11 Santa Fe National Forest Vision ..................................................................................................... 16 Contents of a Forest Plan ................................................................................................................ 17 Forest Plan Components ............................................................................................................. 17 Other Required Forest Plan Content ........................................................................................... 19 Best Available Scientific Information Applied in Developing the Forest Plan .......................... 21 Public Participation in the Forest Plan ........................................................................................ 21 Forest Plan Implementation ............................................................................................................ 22 Interrelationships of Forest Plan Content .................................................................................... 22 Consistency of Projects with the Forest Plan .............................................................................. 23 Transition in the Implementation of the Draft Forest Plan ......................................................... 25 Adaptive Planning and Monitoring ............................................................................................. 25 Chapter 2. Forestwide Plan Components ............................................................................................ 27 Introduction ..................................................................................................................................... 27 Vegetation – Ecological Response Units ........................................................................................ 27 All Vegetation Types (ERUs) ..................................................................................................... 30 Spruce Fir .................................................................................................................................... 33 Mixed Conifer with Aspen .......................................................................................................... 37 Mixed Conifer-Frequent Fire ...................................................................................................... 40 Ponderosa Pine ............................................................................................................................ 44 Piñon-Juniper Grass and Juniper Grass ....................................................................................... 48 Piñon-Juniper Sagebrush ............................................................................................................. 51 Piñon-Juniper Woodlands ........................................................................................................... 53 Sagebrush Shrubland ................................................................................................................... 55 Alpine and Tundra ....................................................................................................................... 56 Montane Subalpine Grasslands ................................................................................................... 58 Colorado Plateau and Great Basin Grasslands ............................................................................ 60 Wildland-urban Interface (WUI) ................................................................................................. 62 Fire and Fuels ................................................................................................................................. 64 Water Resources ............................................................................................................................
Recommended publications
  • The Middle Rio Grande Basin: Historical Descriptions and Reconstruction

    The Middle Rio Grande Basin: Historical Descriptions and Reconstruction

    CHAPTER 4 THE MIDDLE RIO GRANDE BASIN: HISTORICAL DESCRIPTIONS AND RECONSTRUCTION This chapter provides an overview of the historical con- The main two basins are flanked by fault-block moun- ditions of the Middle Rio Grande Basin, with emphasis tains, such as the Sandias (Fig. 40), or volcanic uplifts, on the main stem of the river and its major tributaries in such as the Jemez, volcanic flow fields, and gravelly high the study region, including the Santa Fe River, Galisteo terraces of the ancestral Rio Grande, which began to flow Creek, Jemez River, Las Huertas Creek, Rio Puerco, and about 5 million years ago. Besides the mountains, other Rio Salado (Fig. 40). A general reconstruction of hydro- upland landforms include plateaus, mesas, canyons, pied- logical and geomorphological conditions of the Rio monts (regionally known as bajadas), volcanic plugs or Grande and major tributaries, based primarily on first- necks, and calderas (Hawley 1986: 23–26). Major rocks in hand, historical descriptions, is presented. More detailed these uplands include Precambrian granites; Paleozoic data on the historic hydrology-geomorphology of the Rio limestones, sandstones, and shales; and Cenozoic basalts. Grande and major tributaries are presented in Chapter 5. The rift has filled primarily with alluvial and fluvial sedi- Historic plant communities, and their dominant spe- ments weathered from rock formations along the main cies, are also discussed. Fauna present in the late prehis- and tributary watersheds. Much more recently, aeolian toric and historic periods is documented by archeological materials from abused land surfaces have been and are remains of bones from archeological sites, images of being deposited on the floodplain of the river.
  • An Environmental History of the Middle Rio Grande Basin

    An Environmental History of the Middle Rio Grande Basin

    United States Department of From the Rio to the Sierra: Agriculture Forest Service An Environmental History of Rocky Mountain Research Station the Middle Rio Grande Basin Fort Collins, Colorado 80526 General Technical Report RMRS-GTR-5 Dan Scurlock i Scurlock, Dan. 1998. From the rio to the sierra: An environmental history of the Middle Rio Grande Basin. General Technical Report RMRS-GTR-5. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 440 p. Abstract Various human groups have greatly affected the processes and evolution of Middle Rio Grande Basin ecosystems, especially riparian zones, from A.D. 1540 to the present. Overgrazing, clear-cutting, irrigation farming, fire suppression, intensive hunting, and introduction of exotic plants have combined with droughts and floods to bring about environmental and associated cultural changes in the Basin. As a result of these changes, public laws were passed and agencies created to rectify or mitigate various environmental problems in the region. Although restoration and remedial programs have improved the overall “health” of Basin ecosystems, most old and new environmental problems persist. Keywords: environmental impact, environmental history, historic climate, historic fauna, historic flora, Rio Grande Publisher’s Note The opinions and recommendations expressed in this report are those of the author and do not necessarily reflect the views of the USDA Forest Service. Mention of trade names does not constitute endorsement or recommendation for use by the Federal Government. The author withheld diacritical marks from the Spanish words in text for consistency with English punctuation. Publisher Rocky Mountain Research Station Fort Collins, Colorado May 1998 You may order additional copies of this publication by sending your mailing information in label form through one of the following media.
  • General Vertical Files Anderson Reading Room Center for Southwest Research Zimmerman Library

    General Vertical Files Anderson Reading Room Center for Southwest Research Zimmerman Library

    “A” – biographical Abiquiu, NM GUIDE TO THE GENERAL VERTICAL FILES ANDERSON READING ROOM CENTER FOR SOUTHWEST RESEARCH ZIMMERMAN LIBRARY (See UNM Archives Vertical Files http://rmoa.unm.edu/docviewer.php?docId=nmuunmverticalfiles.xml) FOLDER HEADINGS “A” – biographical Alpha folders contain clippings about various misc. individuals, artists, writers, etc, whose names begin with “A.” Alpha folders exist for most letters of the alphabet. Abbey, Edward – author Abeita, Jim – artist – Navajo Abell, Bertha M. – first Anglo born near Albuquerque Abeyta / Abeita – biographical information of people with this surname Abeyta, Tony – painter - Navajo Abiquiu, NM – General – Catholic – Christ in the Desert Monastery – Dam and Reservoir Abo Pass - history. See also Salinas National Monument Abousleman – biographical information of people with this surname Afghanistan War – NM – See also Iraq War Abousleman – biographical information of people with this surname Abrams, Jonathan – art collector Abreu, Margaret Silva – author: Hispanic, folklore, foods Abruzzo, Ben – balloonist. See also Ballooning, Albuquerque Balloon Fiesta Acequias – ditches (canoas, ground wáter, surface wáter, puming, water rights (See also Land Grants; Rio Grande Valley; Water; and Santa Fe - Acequia Madre) Acequias – Albuquerque, map 2005-2006 – ditch system in city Acequias – Colorado (San Luis) Ackerman, Mae N. – Masonic leader Acoma Pueblo - Sky City. See also Indian gaming. See also Pueblos – General; and Onate, Juan de Acuff, Mark – newspaper editor – NM Independent and
  • Borrador Preliminar Del Plan De Gestion De Recursos Y De La Tierra Propuesto

    Borrador Preliminar Del Plan De Gestion De Recursos Y De La Tierra Propuesto

    Departamento de Agricultura de los Estados Unidos Borrador preliminar del plan de gestión de recursos y de la tierra propuesto para el Bosque Nacional de Carson [Versión 2] Condados de Río Arriba, Taos, Mora y Colfax en Nuevo México Región Sur del Servicio Forestal Publicación Nro. Diciembre de 2017 De acuerdo con la ley federal de los derechos civiles y con los reglamentos y políticas de derechos civiles del Departamento de Agricultura de los Estados Unidos (USDA), el USDA, sus agencias, oficinas y empleados, y las instituciones que participen o administren los programas del USDA tienen prohibido cualquier tipo de discriminación por raza, color, origen nacional, religión, sexo, identidad de género (incluida la expresión de género), orientación sexual, discapacidad, edad, estado civil, estado familiar/parental, ingresos derivados de un programa de asistencia pública, creencias políticas, represalia o acto de venganza por actividad previa a los derechos civiles, en cualquiera de los programas o actividades realizadas o financiadas por el USDA (no todos los fundamentos son aplicables a todos los programas). Los plazos para la presentación de recursos y quejas varían según el programa o el incidente. Las personas con discapacidades que requieran de medios de comunicación alternativos para obtener información sobre el programa (p. ej., Braille, caracteres grandes, cintas de audio, lenguaje estadounidense de señas, etc.) deben contactar a la agencia responsable o al TARGET Center del USDA al (202) 720-2600 (voz y TTY), o ponerse en contacto con el USDA a través del Servicio Federal de Transmisiones al (800) 877-8339. Asimismo, la información de los programas puede estar disponible en otros idiomas además del inglés.
  • Rocky Mountain Bighorn Sheep (Ovis Canadensis Canadensis)

    Rocky Mountain Bighorn Sheep (Ovis Canadensis Canadensis)

    June 2007 Rocky Mountain Bighorn Sheep (Ovis canadensis canadensis) INDICATOR SPECIES HABITAT Rocky Mountain bighorn sheep inhabit the cliffs and crags or other extremely rocky areas in tundra and alpine areas from the summit peaks to around 200 meters below the tree line of the Sangre de Cristo Mountains. The species is an indicator for the presence of alpine, subalpine tundra and mountain meadow grassland (USDA 1986a, p.97). Rocky Mountain bighorn sheep may have been extirpated from New Mexico, where it was native to the northern most area of the state. Populations have been reintroduced using more stock from the central and northern Rockies, and viable herds exist in several areas of the state, including the east-side of the Carson National Forest (NMDGF 2006b). Bighorn prefer precipitous terrain adjacent to suitable feeding sites of high mountain meadows with grasses, forbs and browse species. Bighorn habitat is found in areas where canopy cover is less than 25 to 30 percent and slopes are greater than 60 percent for escape terrain adjacent to grazing areas. Forage, water, and escape terrain are the most important components of bighorn sheep habitat (Van Dyke et al. 1983, NMDGF 2005A). Generally, bighorn sheep have two distinct, separate summer and winter ranges. Most of the year is spent on the winter range, where the elevation is typically below 10,826 feet (3,300 m). The aspect is usually south or southwest. Rams often venture onto the more open slopes, although rugged terrain is always nearby. During severe weather, if snow becomes unusually deep or crusty, bighorn sheep move to slightly higher elevations where wind and sunshine have cleared the more exposed slopes and ridges (NMDGF 2005A).
  • New Mexico Geological Society Spring Meeting Abstracts

    New Mexico Geological Society Spring Meeting Abstracts

    the surface water system. Snow melt in the high VOLCANIC STRATIGRAPHY OF THE WEST- mountains recharges shallow perched aquifers ERN SIERRA BLANCA VOLCANIC FIELD, Abstracts that discharge at springs that feed streams and SOUTH-CENTRAL NEW MEXICO, S. A. Kel- ponds where evaporation occurs. Water in ponds ley, [email protected], and D. J. Koning, and streams may then recharge another shallow New Mexico Bureau of Geology and Mineral perched aquifer, which again may discharge at a Resources, New Mexico Institute of Mining and spring at a lower elevation. This cycle may occur Technology, Socorro, New Mexico 87801; K. A. New Mexico Geological Society several times until the water is deep enough to be Kempter, 2623 Via Caballero del Norte, Santa Fe, spring meeting isolated from the surface water system. A deeper New Mexico 87505; K. E. Zeigler, Zeigler Geo- regional aquifer may exist in this area. East of logic Consulting, Albuquerque, New Mexico The New Mexico Geological Society annual Mayhill along the Pecos Slope, regional ground 87123; L. Peters, New Mexico Bureau of Geology spring meeting was held on April 16, 2010, at the water flow is dominantly to the east toward the and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, New Mex- Macey Center, New Mexico Tech, Socorro. Fol- Roswell Artesian Basin. Some ground water also ico 87801; and F. Goff, Department of Earth and lowing are the abstracts from all sessions given flows to the southeast toward the Salt Basin and to the west into the Tularosa Basin. Planetary Sciences, University of New Mexico, at that meeting.
  • RISK EFFECTS in ELK (Cervus Elaphus): BEHAVIORAL and NUTRITIONAL

    RISK EFFECTS in ELK (Cervus Elaphus): BEHAVIORAL and NUTRITIONAL

    RISK EFFECTS IN ELK (Cervus elaphus): BEHAVIORAL AND NUTRITIONAL RESPONSES TO WOLVES AND ENVIRONMENTAL CONDITIONS by David Alan Christianson A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Ecology and Environmental Sciences MONTANA STATE UNIVERSITY Bozeman, Montana April 2008 ©COPYRIGHT by David Alan Christianson 2008 All Rights Reserved ii APPROVAL of a dissertation submitted by David Alan Christianson This dissertation has been read by each member of the dissertation committee and has been found to be satisfactory regarding content, English usage, format, citation, bibliographic style, and consistency, and is ready for submission to the Division of Graduate Education. Dr. Scott Creel Approved for the Department of Ecology Dr. Dave Roberts Approved for the Division of Graduate Education Dr. Carl A. Fox iii STATEMENT OF PERMISSION TO USE In presenting this dissertation in partial fulfillment of the requirements for a doctoral degree at Montana State University, I agree that the Library shall make it available to borrowers under rules of the Library. I further agree that copying of this dissertation is allowable only for scholarly purposes, consistent with “fair use” as prescribed in the U.S. Copyright Law. Requests for extensive copying or reproduction of this dissertation should be referred to ProQuest Information and Learning, 300 North Zeeb Road, Ann Arbor, Michigan 48106, to whom I have granted “the exclusive right to reproduce and distribute my dissertation in and from microform along with the non- exclusive right to reproduce and distribute my abstract in any format in whole or in part.” David Alan Christianson April 2008 iv TABLE OF CONTENTS 1.
  • MINUTES of the SECOND MEETING of the LAND GRANT COMMITTEE July 5-6, 2016 Penasco Community Center Penasco the Second Meeting Of

    MINUTES of the SECOND MEETING of the LAND GRANT COMMITTEE July 5-6, 2016 Penasco Community Center Penasco the Second Meeting Of

    MINUTES of the SECOND MEETING of the LAND GRANT COMMITTEE July 5-6, 2016 Penasco Community Center Penasco The second meeting of the Land Grant Committee for the 2016 interim was called to order by Senator Jacob R. Candelaria, chair, at 10:10 a.m. on July 5, 2016 at the Penasco Community Center in Penasco. Present Absent Sen. Jacob R. Candelaria, Chair Rep. Jimmie C. Hall Rep. Sarah Maestas Barnes, Vice Chair Sen. Richard C. Martinez Sen. Ted Barela (7/5/16) Sen. Lee S. Cotter Rep. David M. Gallegos Rep. Miguel P. Garcia (7/5/16) Sen. Linda M. Lopez (7/5/16) Sen. Gerald Ortiz y Pino (7/5/16) Rep. Debbie A. Rodella Sen. Sander Rue (7/5/16) Rep. Tomás E. Salazar Rep. Bob Wooley (7/5/16) Advisory Members Rep. Eliseo Lee Alcon Rep. Paul C. Bandy Sen. Carlos R. Cisneros Rep. D. Wonda Johnson Rep. Randal S. Crowder Rep. Patricia A. Lundstrom Rep. Matthew McQueen (7/5/16) Rep. Christine Trujillo (7/5/16) (Attendance dates are noted for members not present for the entire meeting.) Staff Mark Edwards, Bill Drafter, Legislative Council Service (LCS) Michelle Jaschke, Researcher, LCS Peter Kovnat, Staff Attorney, LCS Guests The guest list is in the meeting file. Handouts Copies of all handouts are in the meeting file. Tuesday, July 5 Senator Candelaria asked committee members to introduce themselves, which they did. Welcome and Status Updates: La Merced de Santa Barbara (Santa Barbara) and Santo Tomas Apostol del Rio de las Trampas Land Grant-Merced (Las Trampas) Alex Lopez, president, Las Trampas, read a condensed history of Las Trampas covering the period from 1751 to today and provided the committee with a map showing lands of Las Trampas and Santa Barbara and the surrounding area (see handout: "Santo Tomas Condensed History").
  • Robert H. Moench, US Geological Survey Michael E. Lane, US Bureau

    Robert H. Moench, US Geological Survey Michael E. Lane, US Bureau

    DEPARTMENT OF THE INTERIOR PAMPHLET TO ACCOMPANY MF-19r,l-A U.S. GEOLOGICAL SURVEY MINERAL RESOURCE POTENTIAL OF THE PECOS WILDERNESS, SANTA FE, SAN MIGUEL, NORA, RIO ARRIBA, AND TAGS COUNTIES, NEW MEXICO Robert H. Moench, U.S. Geological Survey Michael E. Lane, U.S. Bureau of Mines STUDIES RELATED TO WILDERNESS Under provisions of the Wilderness Act (Public Law 88-577, September 2, 1964) and the Joint Conference Report on Senate Bill 4, 88th Congress, the U.S. Geological Survey and the U.S. Bureau of Mines have been conducting mineral surveys of wilderness and primitive areas. Areas officially designated as "wilderness," "wild," or "canoe" when the act was passed were incorporated into the National Wilderness Preservation System, and some of them are presently being studied. The act provides that areas under consideration for wilderness designation should be studied for suitability for incorporation into the Wilderness System. The mineral surveys constitute one aspect of the suitability studies. The act directs that the results of such surveys are to be made available to the public and be submitted to the President and the Congress. This report discusses the results of a mineral survey of the Pecos Wilderness, Santa Fe and Carson National Forests, Santr Fe, San Miguel, Mora, Rio Arriba, and Taos Counties, New Mexico. The nucleus of the Pecos Wilderness was established when the Wilderness Act was passed in 1964. Additional adjacent areas were classified as Further Planning and Wilderness during the Second Roadless Area Review and Evaluation (RARE II) by the U.S. Forest Service, January 1979, and some of these were incorporated into the Pecos Wilderness by the New Mexico Wilderness Bill.
  • Mosaic of New Mexico's Scenery, Rocks, and History

    Mosaic of New Mexico's Scenery, Rocks, and History

    Mosaic of New Mexico's Scenery, Rocks, and History SCENIC TRIPS TO THE GEOLOGIC PAST NO. 8 Scenic Trips to the Geologic Past Series: No. 1—SANTA FE, NEW MEXICO No. 2—TAOS—RED RIVER—EAGLE NEST, NEW MEXICO, CIRCLE DRIVE No. 3—ROSWELL—CAPITAN—RUIDOSO AND BOTTOMLESS LAKES STATE PARK, NEW MEXICO No. 4—SOUTHERN ZUNI MOUNTAINS, NEW MEXICO No. 5—SILVER CITY—SANTA RITA—HURLEY, NEW MEXICO No. 6—TRAIL GUIDE TO THE UPPER PECOS, NEW MEXICO No. 7—HIGH PLAINS NORTHEASTERN NEW MEXICO, RATON- CAPULIN MOUNTAIN—CLAYTON No. 8—MOSlAC OF NEW MEXICO'S SCENERY, ROCKS, AND HISTORY No. 9—ALBUQUERQUE—ITS MOUNTAINS, VALLEYS, WATER, AND VOLCANOES No. 10—SOUTHWESTERN NEW MEXICO No. 11—CUMBRE,S AND TOLTEC SCENIC RAILROAD C O V E R : REDONDO PEAK, FROM JEMEZ CANYON (Forest Service, U.S.D.A., by John Whiteside) Mosaic of New Mexico's Scenery, Rocks, and History (Forest Service, U.S.D.A., by Robert W . Talbott) WHITEWATER CANYON NEAR GLENWOOD SCENIC TRIPS TO THE GEOLOGIC PAST NO. 8 Mosaic of New Mexico's Scenery, Rocks, a n d History edited by PAIGE W. CHRISTIANSEN and FRANK E. KOTTLOWSKI NEW MEXICO BUREAU OF MINES AND MINERAL RESOURCES 1972 NEW MEXICO INSTITUTE OF MINING & TECHNOLOGY STIRLING A. COLGATE, President NEW MEXICO BUREAU OF MINES & MINERAL RESOURCES FRANK E. KOTTLOWSKI, Director BOARD OF REGENTS Ex Officio Bruce King, Governor of New Mexico Leonard DeLayo, Superintendent of Public Instruction Appointed William G. Abbott, President, 1961-1979, Hobbs George A. Cowan, 1972-1975, Los Alamos Dave Rice, 1972-1977, Carlsbad Steve Torres, 1967-1979, Socorro James R.
  • Seismic Investigation of the Yavapai-Mazatzal Transition Zone and the Jemez Lineament in Northeastern New Mexico

    Seismic Investigation of the Yavapai-Mazatzal Transition Zone and the Jemez Lineament in Northeastern New Mexico

    Seismic Investigation of the Yavapai-Mazatzal Transition Zone and the Jemez Lineament in Northeastern New Mexico Maria Beatrice Magnani and Alan Levander Department of Earth Science, Rice University, Houston, Texas Kate C. Miller and Tefera Eshete Department of Geological Sciences, University of Texas at El Paso, El Paso, Texas Karl E. Karlstrom Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico A new seismic reflection profile of the Precambrian lithosphere under the Jemez Lineament (JL) (northeastern New Mexico, USA) shows impressive reflectivity throughout the crust. The upper crust is characterized by a 2 km thick undeformed Paleozoic and Mesozoic sedimen- tary sequence above the Precambrian basement. At a depth of 5–8 km, undulating reflec- tions image a Proterozoic nappe cropping out in the nearby Rincon Range. To the south the upper crust is seismically transparent except for south dipping reflections at 2–10 km depth. The middle-lower crust, from 10–45 km depth, shows oppositely dipping reflections that converge in the deep crust (35–37 km) roughly at the center of the profile. To the north the reflectivity dips southward at 25° to a depth of 33 km before fading in the lower crust. In the southern part of the profile a crustal-scale duplex structure extends horizontally for more than 60 km. We interpret the oppositely dipping reflections as the elements of a doubly ver- gent suture zone that resulted from the accretion of the Mazatzal island arc to the southern margin of the Yavapai proto-craton at ~1.65–1.68 Ga.
  • Compilation of Precambrian Isotopic Ages

    Compilation of Precambrian Isotopic Ages

    COMPILATION OF PRECAMBRIAN ISOTOPIC AGES IN NEW MEXICO bY Paul W. Bauer and Terry R. Pollock New Mexico Bureau of Mines and Mineral Resources Open-File Report 389 January, 1993 New Mexico Bureau of Mines and Mineral Resources Socorro, New Mexico 87801 Table of Contents Introduction . 1 Acknowledgments . 4 Figure 1. Map of New Mexico showing exposures of Precambrian rocks, and mountains and physiographic provinces used in database 5 Table A. Geochronology laboratories listed in database, with number of determinations . Table B. Constants used for age recalculations Figure 2. Histograms of isotopic ages . Figure 3. Graph of igneous rocks which have U-Pb zircon plus Rb-Sr, K-Ar, or @ArP9Arage determinations . 8 Part I. List of isotopic age determinations by isotopic method . 9 a. U-Pbages . 9 b.Pb-Pb model ages . 16 c. Rb-Srages . 21 d. K-Arages . 38 e. Ar-Arages . 42 f. Sm-Nd, Fission-track, Pb-alpha, and determinations of uncertain geochronologic significance 45 Part 11. Comprehensive list of all isotopic age determinations withcomplete data listing . 48 Part III. List of isotopic age determinations by mountain range 94 Part IV. List of isotopic age determinations by rock unit . 102 Part V. List of isotopic age determinations by county 114 Part VI. References . 121 Appendix 1. List of areadesignations by county . 127 1 Introduction This compilation contains information on 350 published and unpublished radiometric ages for Precambrian rocks of New Mexico. All data were collected from original references, entered into a REFLEX database, and sorted according to several criteria. Based on author’s descriptions, samples were located as precisely as possible on 7.5’ topographic quadrangle maps, which are on file at the New Mexico Bureau of Mines and Mineral Resources.