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Geologic Map of the Long Valley Caldera, Mono-Inyo Craters
DEPARTMENT OF THE INTERIOR TO ACCOMPANY MAP 1-1933 US. GEOLOGICAL SURVEY GEOLOGIC MAP OF LONG VALLEY CALDERA, MONO-INYO CRATERS VOLCANIC CHAIN, AND VICINITY, EASTERN CALIFORNIA By Roy A. Bailey GEOLOGIC SETTING VOLCANISM Long Valley caldera and the Mono-Inyo Craters Long Valley caldera volcanic chain compose a late Tertiary to Quaternary Volcanism in the Long Valley area (Bailey and others, volcanic complex on the west edge of the Basin and 1976; Bailey, 1982b) began about 3.6 Ma with Range Province at the base of the Sierra Nevada frontal widespread eruption of trachybasaltic-trachyandesitic fault escarpment. The caldera, an east-west-elongate, lavas on a moderately well dissected upland surface oval depression 17 by 32 km, is located just northwest (Huber, 1981).Erosional remnants of these mafic lavas of the northern end of the Owens Valley rift and forms are scattered over a 4,000-km2 area extending from the a reentrant or offset in the Sierran escarpment, Adobe Hills (5-10 km notheast of the map area), commonly referred to as the "Mammoth embayment.'? around the periphery of Long Valley caldera, and The Mono-Inyo Craters volcanic chain forms a north- southwestward into the High Sierra. Although these trending zone of volcanic vents extending 45 km from lavas never formed a continuous cover over this region, the west moat of the caldera to Mono Lake. The their wide distribution suggests an extensive mantle prevolcanic basement in the area is mainly Mesozoic source for these initial mafic eruptions. Between 3.0 granitic rock of the Sierra Nevada batholith and and 2.5 Ma quartz-latite domes and flows erupted near Paleozoic metasedimentary and Mesozoic metavolcanic the north and northwest rims of the present caldera, at rocks of the Mount Morrisen, Gull Lake, and Ritter and near Bald Mountain and on San Joaquin Ridge Range roof pendants (map A). -
The Climate of Death Valley, California
THE CLIMATE OF DEATH VALLEY, CALIFORNIA BY STEVEN ROOF AND CHARLIE CALLAGAN The notoriously extreme climate of Death Valley records shows significant variability in the long-term, including a 35% increase in precipitation in the last 40 years. eath Valley National Park, California, is widely known for its extreme hot and Ddry climate. High summer temperatures, low humidity, high evaporation, and low pre- cipitation characterize the valley, of which over 1300 km2 (500 mi2) are below sea level (Fig. 1). The extreme summer climate attracts great interest: July and August visitation in Death Valley National Park has doubled in the last 10 years. From June through August, the average temperature at Furnace Creek, Death Valley [54 m (177 ft) below sea level] is 98°F (37°C).1 Daytime high temperatures typically exceed 90°F (32°C) more than half of the year, and temperatures above 120°F (49°C) occur 1 Weather data are reported here in their original units in to order retain the original level of precision re- corded by the observers. FIG. I. Location map of the Death Valley region. Death Valley National Park is outlined in blue, main roads shown in red, and the portion of the park below sea level is highlighted in white. AFFILIATIONS: ROOF—School of Natural Science, Hampshire E-mail: [email protected] College, Amherst, Massachusetts; CALLAGAN—National Park Service, DOI: 10.1 175/BAMS-84-12-1725 Death Valley National Park, Death Valley, California. In final form 17 January 2003 CORRESPONDING AUTHOR: Dr. Steve Roof, School of Natural © 2003 American Meteorological Society Science, Hampshire College, Amherst, MA 01002 AMERICAN METEOROLOGICAL SOCIETY DECEMBER 2003 BAfft I 1725 Unauthenticated | Downloaded 10/09/21 10:14 PM UTC 5-20 times each year. -
Tectonic Influences on the Spatial and Temporal Evolution of the Walker Lane: an Incipient Transform Fault Along the Evolving Pacific – North American Plate Boundary
Arizona Geological Society Digest 22 2008 Tectonic influences on the spatial and temporal evolution of the Walker Lane: An incipient transform fault along the evolving Pacific – North American plate boundary James E. Faulds and Christopher D. Henry Nevada Bureau of Mines and Geology, University of Nevada, Reno, Nevada, 89557, USA ABSTRACT Since ~30 Ma, western North America has been evolving from an Andean type mar- gin to a dextral transform boundary. Transform growth has been marked by retreat of magmatic arcs, gravitational collapse of orogenic highlands, and periodic inland steps of the San Andreas fault system. In the western Great Basin, a system of dextral faults, known as the Walker Lane (WL) in the north and eastern California shear zone (ECSZ) in the south, currently accommodates ~20% of the Pacific – North America dextral motion. In contrast to the continuous 1100-km-long San Andreas system, discontinuous dextral faults with relatively short lengths (<10-250 km) characterize the WL-ECSZ. Cumulative dextral displacement across the WL-ECSZ generally decreases northward from ≥60 km in southern and east-central California, to ~25 km in northwest Nevada, to negligible in northeast California. GPS geodetic strain rates average ~10 mm/yr across the WL-ECSZ in the western Great Basin but are much less in the eastern WL near Las Vegas (<2 mm/ yr) and along the northwest terminus in northeast California (~2.5 mm/yr). The spatial and temporal evolution of the WL-ECSZ is closely linked to major plate boundary events along the San Andreas fault system. For example, the early Miocene elimination of microplates along the southern California coast, southward steps in the Rivera triple junction at 19-16 Ma and 13 Ma, and an increase in relative plate motions ~12 Ma collectively induced the first major episode of deformation in the WL-ECSZ, which began ~13 Ma along the N60°W-trending Las Vegas Valley shear zone. -
Alluvial Fans in the Death Valley Region California and Nevada
Alluvial Fans in the Death Valley Region California and Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 466 Alluvial Fans in the Death Valley Region California and Nevada By CHARLES S. DENNY GEOLOGICAL SURVEY PROFESSIONAL PAPER 466 A survey and interpretation of some aspects of desert geomorphology UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1965 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geological Survey Library has cataloged this publications as follows: Denny, Charles Storrow, 1911- Alluvial fans in the Death Valley region, California and Nevada. Washington, U.S. Govt. Print. Off., 1964. iv, 61 p. illus., maps (5 fold. col. in pocket) diagrs., profiles, tables. 30 cm. (U.S. Geological Survey. Professional Paper 466) Bibliography: p. 59. 1. Physical geography California Death Valley region. 2. Physi cal geography Nevada Death Valley region. 3. Sedimentation and deposition. 4. Alluvium. I. Title. II. Title: Death Valley region. (Series) For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C., 20402 CONTENTS Page Page Abstract.. _ ________________ 1 Shadow Mountain fan Continued Introduction. ______________ 2 Origin of the Shadow Mountain fan. 21 Method of study________ 2 Fan east of Alkali Flat- ___-__---.__-_- 25 Definitions and symbols. 6 Fans surrounding hills near Devils Hole_ 25 Geography _________________ 6 Bat Mountain fan___-____-___--___-__ 25 Shadow Mountain fan..______ 7 Fans east of Greenwater Range___ ______ 30 Geology.______________ 9 Fans in Greenwater Valley..-----_____. 32 Death Valley fans.__________--___-__- 32 Geomorpholo gy ______ 9 Characteristics of fans.._______-___-__- 38 Modern washes____. -
Yosemite, Lake Tahoe & the Eastern Sierra
Emerald Bay, Lake Tahoe PCC EXTENSION YOSEMITE, LAKE TAHOE & THE EASTERN SIERRA FEATURING THE ALABAMA HILLS - MAMMOTH LAKES - MONO LAKE - TIOGA PASS - TUOLUMNE MEADOWS - YOSEMITE VALLEY AUGUST 8-12, 2021 ~ 5 DAY TOUR TOUR HIGHLIGHTS w Travel the length of geologic-rich Highway 395 in the shadow of the Sierra Nevada with sightseeing to include the Alabama Hills, the June Lake Loop, and the Museum of Lone Pine Film History w Visit the Mono Lake Visitors Center and Alabama Hills Mono Lake enjoy an included picnic and time to admire the tufa towers on the shores of Mono Lake w Stay two nights in South Lake Tahoe in an upscale, all- suites hotel within walking distance of the casino hotels, with sightseeing to include a driving tour around the north side of Lake Tahoe and a narrated lunch cruise on Lake Tahoe to the spectacular Emerald Bay w Travel over Tioga Pass and into Yosemite Yosemite Valley Tuolumne Meadows National Park with sightseeing to include Tuolumne Meadows, Tenaya Lake, Olmstead ITINERARY Point and sights in the Yosemite Valley including El Capitan, Half Dome and Embark on a unique adventure to discover the majesty of the Sierra Nevada. Born of fire and ice, the Yosemite Village granite peaks, valleys and lakes of the High Sierra have been sculpted by glaciers, wind and weather into some of nature’s most glorious works. From the eroded rocks of the Alabama Hills, to the glacier-formed w Enjoy an overnight stay at a Yosemite-area June Lake Loop, to the incredible beauty of Lake Tahoe and Yosemite National Park, this tour features lodge with a private balcony overlooking the Mother Nature at her best. -
Yucca Mountain Project Area Exists for Quality Data Development in the Vadose Zone Below About 400 Feet
< I Mifflin & Associates 2700 East Sunset Road, SufteInc. C2 Las Vegas, Nevada 89120 PRELIMINARY 7021798-0402 & 3026 FAX: 702/798-6074 ~ADd/tDaeii -00/( YUCCA MOUNTAIN PRO1. A Summary of Technical Support Activities January 1987 to June 1988 By: Mifflin & Associates, Inc. LaS Vegas, Nevada K) Submitted to: .State of Nevada Agency for Nuclear Projects Nuclear Waste Project Office Carson City, Nevada H E C El V E ii MAY 15 1989 NUCLEAR WASTE PROJECt OFFICE May 1989 Volume I 3-4:0 89110o3028905a, WASTE PLDR wM-11PDC 1/1 1 1 TABLE OF CONTENTS I. INTRO DUCTION ............................................................................................................................ page3 AREAS OF EFFORT A. Vadose Zone Drilling Program ............................................................................................. 4 Introduction .............................................................................................................................. 5 Issues ....................................................................................................................................... 7 Appendix A ............................................................................................................................... 9 B. Clim ate Change Program ....................................................................................................... 15 Introduction .............................................................................................................................. 16 Issues ...................................................................................................................................... -
Upper Neogene Stratigraphy and Tectonics of Death Valley — a Review
Earth-Science Reviews 73 (2005) 245–270 www.elsevier.com/locate/earscirev Upper Neogene stratigraphy and tectonics of Death Valley — a review J.R. Knott a,*, A.M. Sarna-Wojcicki b, M.N. Machette c, R.E. Klinger d aDepartment of Geological Sciences, California State University Fullerton, Fullerton, CA 92834, United States bU. S. Geological Survey, MS 975, 345 Middlefield Road, Menlo Park, CA 94025, United States cU. S. Geological Survey, MS 966, Box 25046, Denver, CO 80225-0046, United States dTechnical Service Center, U. S. Bureau of Reclamation, P. O. Box 25007, D-8530, Denver, CO 80225-0007, United States Abstract New tephrochronologic, soil-stratigraphic and radiometric-dating studies over the last 10 years have generated a robust numerical stratigraphy for Upper Neogene sedimentary deposits throughout Death Valley. Critical to this improved stratigraphy are correlated or radiometrically-dated tephra beds and tuffs that range in age from N3.58 Ma to b1.1 ka. These tephra beds and tuffs establish relations among the Upper Pliocene to Middle Pleistocene sedimentary deposits at Furnace Creek basin, Nova basin, Ubehebe–Lake Rogers basin, Copper Canyon, Artists Drive, Kit Fox Hills, and Confidence Hills. New geologic formations have been described in the Confidence Hills and at Mormon Point. This new geochronology also establishes maximum and minimum ages for Quaternary alluvial fans and Lake Manly deposits. Facies associated with the tephra beds show that ~3.3 Ma the Furnace Creek basin was a northwest–southeast-trending lake flanked by alluvial fans. This paleolake extended from the Furnace Creek to Ubehebe. Based on the new stratigraphy, the Death Valley fault system can be divided into four main fault zones: the dextral, Quaternary-age Northern Death Valley fault zone; the dextral, pre-Quaternary Furnace Creek fault zone; the oblique–normal Black Mountains fault zone; and the dextral Southern Death Valley fault zone. -
Consequences of Drying Lake Systems Around the World
Consequences of Drying Lake Systems around the World Prepared for: State of Utah Great Salt Lake Advisory Council Prepared by: AECOM February 15, 2019 Consequences of Drying Lake Systems around the World Table of Contents EXECUTIVE SUMMARY ..................................................................... 5 I. INTRODUCTION ...................................................................... 13 II. CONTEXT ................................................................................. 13 III. APPROACH ............................................................................. 16 IV. CASE STUDIES OF DRYING LAKE SYSTEMS ...................... 17 1. LAKE URMIA ..................................................................................................... 17 a) Overview of Lake Characteristics .................................................................... 18 b) Economic Consequences ............................................................................... 19 c) Social Consequences ..................................................................................... 20 d) Environmental Consequences ........................................................................ 21 e) Relevance to Great Salt Lake ......................................................................... 21 2. ARAL SEA ........................................................................................................ 22 a) Overview of Lake Characteristics .................................................................... 22 b) Economic -
Draft DRECP and EIR/EIS CHAPTER II.4
Draft DRECP and EIR/EIS CHAPTER II.4. ALTERNATIVE 1 II.4 ALTERNATIVE 1 Alternative 1 is one of five action alternatives considered and analyzed in the Desert Renewable Energy Conservation Plan (DRECP or Plan) and Environmental Impact Report/Environmental Impact Statement (EIR/EIS). The description of Alternative 1 is first provided at an interagency level (Section II.4.1), which describes all Plan elements of the alternative. After the interagency description, the individual elements of the alternative are described, including the Bureau of Land Management (BLM) Land Use Plan Amendment (LUPA) elements of the DRECP (Section II.4.2), the Natural Community Conservation Plan (NCCP) elements of the DRECP (Section II.4.3), and the General Conservation Plan (GCP) elements of the DRECP (Section II.4.4). II.4.1 Interagency Description of Alternative 1 The interagency description of Alternative 1 includes the following main sections: Overview of Alternative 1, Conservation Strategy, Monitoring and Adaptive Management Program, Description of the Covered Activities, and Plan Implementation. The description of Alternative 1 for the DRECP and EIR/EIS encompasses the overall conservation strategy and description of Covered Activities on federal and nonfederal lands (i.e., state, county, city, and privately owned lands) within the Plan Area. II.4.1.1 Overview of Alternative 1 The following provides a Plan-wide overview of Alternative 1. Alternative 1 integrates the renewable energy and resource conservation with other existing uses in the Plan Area and includes BLM LUPA elements, NCCP elements, and GCP elements. Under Alternative 1 for the DRECP, an interagency conservation strategy for the Plan Area would be established that includes a streamlined process for the permitting of renewable energy and transmission development on both federal and nonfederal lands and a BLM LUPA providing Conservation and Management Actions (CMAs) for resources throughout the Plan Area on BLM-administered lands. -
Interest and the Panamint Shoshone (E.G., Voegelin 1938; Zigmond 1938; and Kelly 1934)
109 VyI. NOTES ON BOUNDARIES AND CULTURE OF THE PANAMINT SHOSHONE AND OWENS VALLEY PAIUTE * Gordon L. Grosscup Boundary of the Panamint The Panamint Shoshone, also referred to as the Panamint, Koso (Coso) and Shoshone of eastern California, lived in that portion of the Basin and Range Province which extends from the Sierra Nevadas on the west to the Amargosa Desert of eastern Nevada on the east, and from Owens Valley and Fish Lake Valley in the north to an ill- defined boundary in the south shared with Southern Paiute groups. These boundaries will be discussed below. Previous attempts to define the Panamint Shoshone boundary have been made by Kroeber (1925), Steward (1933, 1937, 1938, 1939 and 1941) and Driver (1937). Others, who have worked with some of the groups which border the Panamint Shoshone, have something to say about the common boundary between the group of their special interest and the Panamint Shoshone (e.g., Voegelin 1938; Zigmond 1938; and Kelly 1934). Kroeber (1925: 589-560) wrote: "The territory of the westernmost member of this group [the Shoshone], our Koso, who form as it were the head of a serpent that curves across the map for 1, 500 miles, is one of the largest of any Californian people. It was also perhaps the most thinly populated, and one of the least defined. If there were boundaries, they are not known. To the west the crest of the Sierra has been assumed as the limit of the Koso toward the Tubatulabal. On the north were the eastern Mono of Owens River. -
2021 Magazine
July 2021 Welcome to the July 2021 edition of BADWATER® Magazine! We are AdventureCORPS®, producers of ultra-endurance sports events and adventure travel across the globe, and the force behind the BADWATER® brand. This magazine celebrates the entire world-wide Badwater® / AdventureCORPS® series of races, all the Badwater Services, Gear, Drinks, and Clothing, and what we like to call the Badwater Family and the Badwater Way of Life. Adventure is our way of life, so – after the sad and disastrous 2020 when we were not able to host any of our life-changing events – we are pleased to be fully back in action in 2021! Well, make that almost fully: Due to pandemic travel bans still in place, international participation in our USA-based events is not where we want it and that’s really unfortunate. Badwater 135 is the de facto Olympics of Ultrarunning and the 135-Mile World Championship, so we always want as many nationalities represented as possible. (The inside front cover of this magazine celebrates all sixty-one nationalities which have been represented on the Badwater 135 start line over the years.) Our new six-day stage race across Armenia – Artsakh Ultra – will have to wait yet another year to debut in 2022, two years later than planned. But it will be incredible, the ultimate stage race with six days of world-class trail running through several millennia of incredible culture and history, and across the most dramatic and awe-inspiring landscapes. This year, we are super excited to have brought two virtual races to life, first for the 31 days of January, and then for 16 days in April. -
Isobases of the Algonquin and Iroquois Beaches, and Their Significance1
BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA VOL. 21, PP. 227-248, PL. 5 JUNE 10, 1910 ISOBASES OF THE ALGONQUIN AND IROQUOIS BEACHES, AND THEIR SIGNIFICANCE1 BY JAMES WALTER GOl.DTHWAIT (Read before the Society December 28, 1909) CONTENTS Page Introduction ............................................................................................................... 227 The Algonquin w ater-p lan e.................................................................................... 229 Stage recorded by the Algonquin beach.......................................................229 Isobases of the upwarped portion of the Algonquin plane...................... 233 The horizontal portion of the Algonquin plane.......................................... 236 The “hinge line” or “isobase of zero” ............................................................ 239 The Algonquin plane as a datum plane........................................................ 240 The Iroquois w ater-plane........................................................................................ 241 Relative ages of the Iroquois beach and the Algonquin beach..............241 Isobases of the Iroquois plane........................................................................ 242 Comparison of the two water-planes.................................................................... 243 The isobases and the pre-Cambrian boundary.................................................... 245 Summary ....................................................................................................................