Owlshead Mountains
Total Page:16
File Type:pdf, Size:1020Kb

Load more
Recommended publications
-
Use of Radiocarbon Ages to Narrow Groundwater Recharge Estimates in the Southeastern Mojave Desert, USA
hydrology Article Use of Radiocarbon Ages to Narrow Groundwater Recharge Estimates in the Southeastern Mojave Desert, USA Adam H. Love 1,* and Andy Zdon 2 1 Roux Associates, Inc., 555 12th Street, Suite 250, Oakland, CA 95607, USA 2 Partner Engineering and Science, Inc., 1761 E. Garry Avenue, Santa Ana, CA 92705, USA; [email protected] * Correspondence: [email protected]; Tel.: +1-415-697-6200 Received: 2 August 2018; Accepted: 10 September 2018; Published: 13 September 2018 Abstract: Estimating groundwater recharge in arid or semiarid regions can be a difficult and complex task, since it is dependent on a highly variable set of spatial and temporal hydrologic parameters and processes that are dependent on the local climate, the land surface properties, and subsurface characteristics. As a result, traditional methods for estimating the recharge can result in a wide range of derived values. This is evident in the southeastern Mojave Desert, where calculated recharge estimates by previous investigators that range over an order of magnitude (from ~2500 to ~37,000 acre feet per year) are reported. To narrow down this large span of recharge estimates to narrower and more plausible values, this study evaluates the previous recharge estimates in this region, to examine the sources of variability in the reported results and to constrain the recharge estimates based on the hydrologic conditions and the radiocarbon age-dating of spring flows—even without knowledge of the precise subsurface hydrology. The groundwater age and perennial flow characteristics of springs in this study could not be derived from waters sourced solely from local recharge. -
NPCA Comments on Proposed Silurian
Stanford MillsLegalClinic Environmental Law Clinic Crown Quadrangle LawSchool 559 Nathan Abbott Way Stanford, CA 94305-8610 Tel 650 725-8571 Fax 650 723-4426 www.law.stanford.edu September 9, 2014 Via Electronic Mail and Federal Express James G. Kenna, State Director Bureau of Land Management California State Office 2800 Cottage Way, Suite W-1623 Sacramento, CA 95825 (916) 978-4400 [email protected] Katrina Symons Field Manager Bureau of Land Management Barstow Field Office 2601 Barstow Road Barstow, CA 92311 (760) 252-6004 [email protected] Dear State Director Kenna and Field Manager Symons: Enclosed please find comments by the National Parks Conservation Association (“NPCA”) on the solar and wind projects proposed by Iberdrola Renewables, Inc., in Silurian Valley, California. We understand that the U.S. Bureau of Land Management (“BLM”) is currently considering whether to grant the Silurian Valley Solar Project a variance under the October 2012 Record of Decision for Solar Energy Development in Six Southwestern States. We also understand that BLM is currently evaluating the Silurian Valley Wind Project under the National Environmental Policy Act. As the enclosed comments make clear, NPCA has serious concerns about the proposed projects’ compliance with applicable laws and policies, and about their potentially significant adverse effects on the Silurian Valley and surrounding region. We thank you for your consideration of these comments. NPCA looks forward to participating further in the administrative processes associated with the proposed projects. Respectfully submitted, Elizabeth Hook, Certified Law Student Community Law ❖ Criminal Defense ❖ Environmental Law ❖ Immigrants’ Rights ❖ International Human Rights and Conflict Resolution ❖ Juelsgaard Intellectual Property and Innovation ❖ Organizations and Transactions ❖ Religious Liberty ❖Supreme Court Litigation ❖ Youth and Education Law Project Mr. -
Providence Mountains State Recreation Area 38200 Essex Road Or P.O
Our Mission Providence The mission of California State Parks is to provide for the health, inspiration and In the middle of the education of the people of California by helping Mountains to preserve the state’s extraordinary biological Mojave Desert, Jack and diversity, protecting its most valued natural and State Recreation Area cultural resources, and creating opportunities Ida Mitchell shared with for high-quality outdoor recreation. thousands of fortunate visitors the cool beauty of the caverns’ magnificent “draperies” and “coral California State Parks supports equal access. pipes” formations. Prior to arrival, visitors with disabilities who need assistance should contact the park at (760) 928-2586. If you need this publication in an alternate format, contact [email protected]. CALIFORNIA STATE PARKS P.O. Box 942896 Sacramento, CA 94296-0001 For information call: (800) 777-0369 (916) 653-6995, outside the U.S. 711, TTY relay service www.parks.ca.gov Providence Mountains State Recreation Area 38200 Essex Road or P.O. Box 1 Essex, CA 92332 • (760) 928-2586 © 2010 California State Parks (Rev. 2017) V isitors to Providence Mountains State that left abundant shell-covered organisms Recreation Area are greeted by the sight on the sea floor. of jagged slopes of gray limestone, topped The shells and plant materials that settled by volcanic peaks of red rhyolite. Located on the sea bottom eventually became on the eastern slope of the Providence limestone. As the restless land heaved Mountains Range, the park lies within the upward, these formations were pushed boundaries of the 1.6-million acre Mojave above the level of the former ocean bed. -
Fabuleux Parcs De La Californie: Déserts, Montagnes Et
Index Les numéros en bleu renvoient aux cartes. Le texte en vert renvoie aux parcs et réserves. A D Abbots Lagoon Trail 40 Dante’s View 17 Ahwahnee, The 28 Dead Giant 30 Alcatraz, île d’ 37 Death Valley National Park 14, 15 Arbres de Josué 13 Death Valley Scotty 14 Artist’s Palette 18 Del Norte Coast Redwoods Auto Log 24 State Park 41 Avenue of the Giants 41 Devastated Area 43 Drake Beach 39 B Badwater Basin 17 E Balconies Cave 35 Earthquake Trail 39 Barker Dam 8 El Capitan 30 Bear Gulch Cave 35 Elephant Seal Overlook 40 Big Tree Wayside Walk 42 Emerald Bay State Park 43 Borax Museum 16 Enderts Beach Road 42 Bridalveil Fall 30 F C Faille de San Andreas 39 California Tunnel Tree 32 Five Brooks Ranch 40 Californie 4, 5 Furnace Creek 16 Channel Islands National Marine Sanctuary 33 G Channel Islands National Park 33 Channel Islands National Park Visitor General Grant Tree 26 Center 35 General Sherman Tree 24 Chimney Rock 39 Geology Tour Road 7 Cholla Cactus Garden 7 Giant Forest 24 Cima Dome 13 Giant Forest Museum 24 Cinder Cones 10 Glacier Point 30 Coast Trail 40 Golden Gate National Cottonwood Spring 7 Recreation Area 37 Crystal Cave 24 Grizzly Giant 32 http://www.guidesulysse.com/catalogue/FicheProduit.aspx?isbn=9782765875406 H Lower Yosemite Fall Trail 28 Half Dome 30 Happy Isles 31 M Happy Isles Nature Center 31 Marin Headlands 37 Hetch Hetchy Valley 32 Mariposa Grove 32 Hidden Valley 8 Mesquite Flat Sand Dunes 18 High Peaks 35 Miner’s Ridge Trail 42 Historic Stovepipe Well 18 Mist Trail 31 Hole-in-the-Wall 11 Mitchell Caverns 13 Hospital Rock 24 Mojave National Preserve 8, 9 Humboldt Redwoods State Park 40 Moro Rock 24 Moro Rock/Crescent Meadow Road 24 I Mosaic Canyon 18 Mount Tamalpais State Park 38 Indian Beach Loop 40 Mount Vision Road 40 Inn at Death Valley 16 Muir Beach 38 Muir Beach Overlook 38 J Muir, John 32 Jedediah Smith Redwoods Muir Woods National Monument 38 State Park 41 John Muir 32 N Joshua Tree National Park 6 Nation’s Christmas Tree Ceremony 26 Jumbo Rocks 7 Newton B. -
Sustainable Transit Feasibility Study for the Mojave National Preserve
2009 Sustainable Transit Feasibility Study for the Mojave National Preserve Project Team: Joseph Chow, P.E.* Ankoor Bhagat Sarah Hernandez Advisor: Dr. Michael McNally Institute of Transportation Studies Sponsored by National Parks University of California,i | PIrvine a g e Conservation Association Irvine, CA *Corresponding investigator: [email protected] Table of Contents INTRODUCTION .......................................................................................................................... 1 Study Purpose .............................................................................................................................. 1 Methodology ............................................................................................................................... 2 EXISTING SCENARIO ................................................................................................................. 4 Study Area ................................................................................................................................... 4 Emissions Inventory .................................................................................................................... 6 Visitor Demographics ................................................................................................................. 7 Intra-Preserve Shuttle Service ................................................................................................... 12 DEMAND ANALYSIS ............................................................................................................... -
A Transect Across the Death Valley Extended Terrane, California Michael S
JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 107, NO. B1, 2010, 10.1029/2001JB000239, 2002 Assessing vertical axis rotations in large-magnitude extensional settings: A transect across the Death Valley extended terrane, California Michael S. Petronis and John W. Geissman Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, New Mexico, USA Daniel K. Holm Department of Geology, Kent State University, Kent, Ohio, USA Brian Wernicke and Edwin Schauble Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California, USA Received 11 September 2000; revised 7 May 2001; accepted 14 July 2001; published 18 January 2002. [1] Models for Neogene crustal deformation in the central Death Valley extended terrane, southeastern California, differ markedly in their estimates of upper crustal extension versus shear translations. Documentation of vertical axis rotations of range-scale crustal blocks (or parts thereof) is critical when attempting to reconstruct this highly extended region. To better define the magnitude, aerial extent, and timing of vertical axis rotation that could mark shear translation of the crust in this area, paleomagnetic data were obtained from Tertiary igneous and remagnetized Paleozoic carbonate rocks along a roughly east-west traverse parallel to about 36°N latitude. Sites were established in 7 to 5 Ma volcanic sequences (Greenwater Canyon and Brown’s Peak) and the 10 Ma Chocolate Sundae Mountain granite in the Greenwater Range, 8.5 to 7.5 Ma and 5 to 4 Ma basalts on the east flank of the Black Mountains, the 10.6 Ma Little Chief stock and upper Miocene(?) basalts in the eastern Panamint Mountains, and Paleozoic Pogonip Group carbonate strata in the north central Panamint Mountains. -
Mojave National Preserve Management Plan for Developed
Mojave National Preserve—Management Plan for Developed Water Resources CHAPTER 3: AFFECTED ENVIRONMENT Introduction This chapter describes the unique factors that influence water resource management in the Preserve and the resources that could be affected by the implementation of any of the alternatives described in Chapter 2: Alternatives. The resource descriptions provided in this chapter serve as a baseline to compare the potential effects of the management actions proposed in the alternatives. The following resource topics are described in this chapter: • Environmental Setting • Cultural Resources • Water Resources • Wilderness Character • Wildlife Environmental setting and water resources are important for context and are foundational for water resource management, but are not resources that are analyzed for effects. Resource issues that were considered and dismissed from further analysis are listed in Chapter 1: Purpose of and Need for Action and are not discussed further in this EA. A description of the effects of the proposed alternatives on wildlife, cultural resources, and wilderness character is presented in Chapter 4: Environmental Consequences. Environmental Setting The Preserve includes an ecologically diverse yet fragile desert ecosystem consisting of vegetative attributes that are unique to the Mojave Desert, as well as components of the Great Basin and Sonoran Deserts. Topography The topography of the Preserve is characteristic of the mountain and basin physiographic pattern, with tall mountain ranges separated by corresponding valleys filled with alluvial sediments. Primary mountain ranges in the Preserve, from west to east, include the Granite, Kelso, Providence, Clark, New York, and Piute Mountains. Major alluvial valleys include Soda Lake (dry lake bed), Shadow Valley, Ivanpah Valley, Lanfair Valley, and Fenner Valley. -
The California Desert CONSERVATION AREA PLAN 1980 As Amended
the California Desert CONSERVATION AREA PLAN 1980 as amended U.S. DEPARTMENT OF THE INTERIOR BUREAU OF LAND MANAGEMENT U.S. Department of the Interior Bureau of Land Management Desert District Riverside, California the California Desert CONSERVATION AREA PLAN 1980 as Amended IN REPLY REFER TO United States Department of the Interior BUREAU OF LAND MANAGEMENT STATE OFFICE Federal Office Building 2800 Cottage Way Sacramento, California 95825 Dear Reader: Thank you.You and many other interested citizens like you have made this California Desert Conservation Area Plan. It was conceived of your interests and concerns, born into law through your elected representatives, molded by your direct personal involvement, matured and refined through public conflict, interaction, and compromise, and completed as a result of your review, comment and advice. It is a good plan. You have reason to be proud. Perhaps, as individuals, we may say, “This is not exactly the plan I would like,” but together we can say, “This is a plan we can agree on, it is fair, and it is possible.” This is the most important part of all, because this Plan is only a beginning. A plan is a piece of paper-what counts is what happens on the ground. The California Desert Plan encompasses a tremendous area and many different resources and uses. The decisions in the Plan are major and important, but they are only general guides to site—specific actions. The job ahead of us now involves three tasks: —Site-specific plans, such as grazing allotment management plans or vehicle route designation; —On-the-ground actions, such as granting mineral leases, developing water sources for wildlife, building fences for livestock pastures or for protecting petroglyphs; and —Keeping people informed of and involved in putting the Plan to work on the ground, and in changing the Plan to meet future needs. -
Mojave National Preserve Management Plan for Developed Water Sources
to Las Vegas to Las Vegas Kin Primm gsto E n S W E H G T G a I sh N G N A M Wilderness H R A L Y N R A I (! (!A A N Clark Mountain )" H #T R D N (! (! G # G (! U (! N R U U IO ") N A 95 O (! Y E Yates Well P O S (! A x N C C I L c M (! F IC G e U H IVANPAH R L l K A E Mojave National Preserve s IL L i R R U o # 15 O A (! LAKE (! C A r A Water Resources Management Plan and Environmental Assessment D M L (dry) c D C i n ash M 164 O e LL W HI n Searchlight R WK o MOHA at o Nipton W he a Mojave National Preserve boundary W d )" P # Nipton Road I Salton # ### 164 U M ## # National Park Service wilderness E I T Sea G N h E s N E R Y a A A W # R L (! E s L S Spring ng A H V ri C IL ES L L p M N A S 127 ll L L )" CIMA ROAD # Ivanpah Road I u L Small game guzzler B A )" (! A E V # )" V Y S T " Big game guzzler T # ## A N (! S # M (! L )" # (!(! # Halloran Springs #Morning U N # L (! I # ## (! # Well H E # Star Mine # O h ##(!# A ## s ## W (! )" A Y (! # T a H i # M (! CASTLE ## P l sh (!# Paved road lo a N W # A w W MOUNTAINS N Willow e U )" # P NATIONAL t SILVER A u Spring O i 15 N MONUMENT LAKE # V (! P Unpaved 2-wheel drive road I A (!# # # M (dry) (! # )" Morning Star Mine Road V (! I (! E Cal Nev Ari # L Kessler Unpaved 4-wheel drive road #(!# T # #### Spring K (!## S CIMA R (! (!# Mine Ro (! (! # rt a # A (! ! O # a d Mojave Road 4-wheel drive road #(!#(! ( Y C h DOME (! !( H # s Deer ( (! W (! a E (!(! Spring #(! N (! )" )" P W# (! Keystone Desert wash (! I NEVADA Baker Kelbaker Rd nk (! (! CALIFORNIA a (! (! U T (!(! # (! (! Spring ck -
Late Quaternary Stratigraphy and Luminescence Geochronology of the Northeastern Mojave Desert
ARTICLE IN PRESS Quaternary International 166 (2007) 61–78 Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert Shannon A. Mahana,Ã, David M. Millerb, Christopher M. Mengesc, James C. Younta aUnited States Geological Survey, Box 25046 MS 974, Denver, CO 80225, USA bUnited States Geological Survey, 345 Middlefield Road, MS 973, Menlo Park, CA 94025, USA cUnited States Geological Survey, 520 N. Park Ave., Tucson, AZ 85719-5035, USA Available online 8 January 2007 Abstract The chronology of the Holocene and late Pleistocene deposits of the northeastern Mojave Desert have been largely obtained using radiocarbon ages. Our study refines and extends this framework using optically stimulated luminescence (OSL) to date deposits from Valjean Valley, Silurian Lake Playa, Red Pass, and California Valley. Of particular interest are eolian fine silts incorporated in ground- water discharge (GWD) deposits bracketed at 185–140 and 20–50 ka. Alluvial fan deposits proved amenable for OSL by dating both eolian sand lenses and reworked eolian sand in a matrix of gravel that occurs within the fan stratigraphy. Lacustrine sand in spits and bars also yielded acceptable OSL ages. These OSL ages fill gaps in the geochronology of desert deposits, which can provide data relevant to understanding the responses of several depositional systems to regional changes in climate. This study identifies the most promising deposits for future luminescence dating and suggests that for several regions of the Mojave Desert, sediments from previously undated landforms can be more accurately placed within correct geologic map units. Published by Elsevier Ltd. 1. Introduction Previous chronologic studies in the northeastern Mojave Desert area include magneto-stratigraphic studies and Extracting paleoclimatic and paleoenvironmental infor- tephrochronology of the upper Pliocene to middle Quatern- mation from terrestrial deposits is an important area of ary Tecopa beds (Hillhouse, 1987; Sarna-Wojcicki et al., Quaternary geologic research. -
Biological Goals and Objectives
Appendix C Biological Goals and Objectives Draft DRECP and EIR/EIS APPENDIX C. BIOLOGICAL GOALS AND OBJECTIVES C BIOLOGICAL GOALS AND OBJECTIVES C.1 Process for Developing the Biological Goals and Objectives This section outlines the process for drafting the Biological Goals and Objectives (BGOs) and describes how they inform the conservation strategy for the Desert Renewable Energy Conservation Plan (DRECP or Plan). The conceptual model shown in Exhibit C-1 illustrates the structure of the BGOs used during the planning process. This conceptual model articulates how Plan-wide BGOs and other information (e.g., stressors) contribute to the development of Conservation and Management Actions (CMAs) associated with Covered Activities, which are monitored for effectiveness and adapted as necessary to meet the DRECP Step-Down Biological Objectives. Terms used in Exhibit C-1 are defined in Section C.1.1. Exhibit C-1 Conceptual Model for BGOs Development Appendix C C-1 August 2014 Draft DRECP and EIR/EIS APPENDIX C. BIOLOGICAL GOALS AND OBJECTIVES The BGOs follow the three-tiered approach based on the concepts of scale: landscape, natural community, and species. The following broad biological goals established in the DRECP Planning Agreement guided the development of the BGOs: Provide for the long-term conservation and management of Covered Species within the Plan Area. Preserve, restore, and enhance natural communities and ecosystems that support Covered Species within the Plan Area. The following provides the approach to developing the BGOs. Section C.2 provides the landscape, natural community, and Covered Species BGOs. Specific mapping information used to develop the BGOs is provided in Section C.3. -
Structural Geology of the Montgomery Mountains and the Northern Half of the Nopah and Resting Spring Ranges, Nevada and California
Structural geology of the Montgomery Mountains and the northern half of the Nopah and Resting Spring Ranges, Nevada and California B. C. BURCHFIEL Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 G. S. HAMILL IV Research and Development Company, Box 36506, Houston, Texas 77036 D. E. WILHELMS U.S. Geological Survey. 345 Middlefield Road. Menlo Park. California 94025 ABSTRACT Ranges, for the most part in California. The area lies between the Amargosa and Pahrump Valleys and southwest of the Spring More than 7,500 m of upper Precambrian and Paleozoic sedi- Mountains (Fig. 1). The generalized geologic map of the area mentary rocks in the area of the Montgomery Mountains and the (Fig. 2) is produced from a more detailed map published in the northern half of the Nopah and Resting Spring Ranges represent a Geological Society of America Map and Chart Series (Burchfiel typical Cordilleran miogeosynclinal sequence. During Mesozoic and others, 1982). The detailed map adjoins the western edge of a time, after a period of earlier Mesozoic folding and high-angle map of the Spring Mountains (at the same scale) by Burchfiel and faulting, these rocks were cut by thrust faults that divided the rock others (1974). sequence into four structural units in the Resting Spring Range and R. B. Rowe was the first geologist to make observations in the the Montgomery Mountains. From the top down, the units are: map area, and his rather limited study is reported in the regional (1) the Montgomery thrust plate, (2) the Baxter thrust plate, (3) the compilation of Spurr (1903).