DOCSLIB.ORG

Entire Report

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Entire Report Evaluation of the Hydrologic System and Selected Water-Management Alternatives in the Owens Valley, California United States Geological Survey Water-Supply Paper 2370-H Prepared in cooperation with Inyo County and the Los Angeles Department of Water and Power EVALUATION OF THE HYDROLOGIC SYSTEM AND SELECTED WATER-MANAGEMENT ALTERNATIVES IN THE OWENS VALLEY, CALIFORNIA Pleasant Valley Reservoir VVolcanicolcanic TTablelandableland Bishop Mountains ADA W24XX NEVNEVADA Frontispiece White 30 X 32 picas Big Pine Crater Mtn SIERRA Red Mtn Tinemaha Reservoir Mt Whitney Mountains River Independence Inyo Owens N Alabama Hills Lone Pine Los Angeles Aqueduct Owens Lake Frontispiece. Vertically exaggerated perspective and oblique view of the Owens Valley, California, showing the dramatic difference in topographic relief between the valley and the surrounding mountains. Chapter H Evaluation of the Hydrologic System and Selected Water-Management Alternatives in the Owens Valley, California By WESLEY R. DANSKIN Prepared in cooperation with Inyo County and the Los Angeles Department of Water and Power U.S. GEOLOGICAL SURVEY WATER-SUPPLY PAPER 2370 HYDROLOGY AND SOIL-WATER-PLANT RELATIONS IN OWENS VALLEY, CALIFORNIA 1998 U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Charles G. Groat, Acting Director The use of firm, trade, and brand names in this report is for identification purposes only and does not constitute endorsement by the U.S. Government. Library of Congress Cataloging in Publications Date Danskin, Wesley R. Evaluation of the hydrologic system and selected water-management alternatives in the Owens, Valley, Cal- ifornia / by Wesley R. Danskin. p. cm.—(U.S. Geological Survey Water-Supply Paper 2370-H) “Prepared in cooperation with Inyo County and the Los Angeles Department of Water and Power.” Includes bibliographical references. Supt. of Docs. no. : I 19.13: 2370-H 1. Water-supply—California—Owens River Valley—Management. 2. Groundwater—California—Owens River Valley. I. Inyo County (Calif.) II. Los Angeles (Calif.). Dept. of Water and Power. III. Title. IV. Series. TD225.085D36 1998 333.91’15’0979487—dc21 98-29438 CIP ISBN.0-607-90059-8 For sale by U.S. Geological Survey, Information Services Box 25286, Federal Center Denver, CO 80225 CONTENTS Abstract.................................................................................................................................................................................. 1 Introduction ........................................................................................................................................................................... 2 Purpose and Scope....................................................................................................................................................... 5 Previous Investigations ................................................................................................................................................ 7 Methods of Investigation ............................................................................................................................................. 10 Acknowledgments ....................................................................................................................................................... 12 Description of Study Area ..................................................................................................................................................... 12 Physiography ............................................................................................................................................................... 12 Geologic Setting .......................................................................................................................................................... 13 Climate......................................................................................................................................................................... 20 Vegetation .................................................................................................................................................................... 20 Land and Water Use..................................................................................................................................................... 21 Hydrologic System ................................................................................................................................................................ 24 Precipitation and Evapotranspiration........................................................................................................................... 24 Precipitation....................................................................................................................................................... 24 Evapotranspiration............................................................................................................................................. 25 Surface-Water System ................................................................................................................................................. 33 Tributary Streams .............................................................................................................................................. 34 Percent Valleywide Runoff ...................................................................................................................... 35 Tributary Stream Recharge...................................................................................................................... 39 Ungaged Runoff................................................................................................................................................. 43 Mountain-Front Runoff between Tributary Streams ............................................................................... 43 Runoff from Bedrock Outcrops within the Valley Fill ............................................................................ 44 Owens River and the Los Angeles Aqueduct..................................................................................................... 45 Lower Owens River ........................................................................................................................................... 48 Reservoirs and Small Lakes............................................................................................................................... 49 Reservoirs ................................................................................................................................................ 49 Small Lakes ............................................................................................................................................. 50 Canals, Ditches, and Ponds................................................................................................................................ 51 Canals and Ditches .................................................................................................................................. 51 Ponds ....................................................................................................................................................... 52 Owens Lake ....................................................................................................................................................... 53 Ground-Water System ................................................................................................................................................. 53 Geometry and Boundary Conditions ................................................................................................................. 54 Hydrogeologic Units and Subunits.................................................................................................................... 54 Hydraulic Characteristics .................................................................................................................................. 58 Movement of Ground Water .............................................................................................................................. 59 Ground-Water Budget........................................................................................................................................ 64 Discharge from Pumped and Flowing Wells ........................................................................................... 65 Springs and Seeps.................................................................................................................................... 67 Underflow ................................................................................................................................................ 70 Irrigation and Watering of Livestock....................................................................................................... 71 Ground-Water Quality ....................................................................................................................................... 71 Ground-Water Flow Model................................................................................................................................ 72 General Characteristics............................................................................................................................ 73 Representation of the Aquifer
Load more

Recommended publications
  • Instructionally Related Activities Report
    Instructionally Related Activities Report Linda O’Hirok, ESRM ESRM 463 Water Resources Management Owens Valley Field Trip, March 4-6, 2016 th And 5 Annual Water Symposium, April 25, 2016 DESCRIPTION OF THE ACTIVITY; The students in ESRM 463 Water Resources Management participated in a three-day field trip (March 4-6, 2016) to the Owens Valley to explore the environmental and social impacts of the City of Los Angeles (LA DWP) extraction and transportation of water via the LA Aqueduct to that city. The trip included visiting Owens Lake, the Owens Valley Visitor Center, Lower Owens Restoration Project (LORP), LA DWP Owens River Diversion, Alabama Gates, Southern California Edison Rush Creek Power Plant, Mono Lake and Visitor Center, June Mountain, Rush Creek Restoration, and the Bishop Paiute Reservation Restoration Ponds and Visitor Center. In preparation for the field trip, students received lectures, read their textbook, and watched the film Cadillac Desert about the history of the City of Los Angeles, its explosive population growth in the late 1800’s, and need to secure reliable sources of water. The class also received a summary of the history of water exploitation in the Owens Valley and Field Guide. For example, in 1900, William Mulholland, Chief Engineer for the City of Los Angeles, identified the Owens River, which drains the Eastern Sierra Nevada Mountains, as a reliable source of water to support Los Angeles’ growing population. To secure the water rights, Los Angeles secretly purchased much of the land in the Owens Valley. In 1913, the City of Los Angeles completed the construction of the 223 mile, gravity-flow, Los Angeles Aqueduct that delivered Owens River water to Los Angeles.
    [Show full text]
  • Eocene Origin of Owens Valley, California
    geosciences Article Eocene Origin of Owens Valley, California Francis J. Sousa College of Earth, Oceans, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA; [email protected] Received: 22 March 2019; Accepted: 26 April 2019; Published: 28 April 2019 Abstract: Bedrock (U-Th)/He data reveal an Eocene exhumation difference greater than four kilometers athwart Owens Valley, California near the Alabama Hills. This difference is localized at the eastern fault-bound edge of the valley between the Owens Valley Fault and the Inyo-White Mountains Fault. Time-temperature modeling of published data reveal a major phase of tectonic activity from 55 to 50 Ma that was of a magnitude equivalent to the total modern bedrock relief of Owens Valley. Exhumation was likely accommodated by one or both of the Owens Valley and Inyo-White Mountains faults, requiring an Eocene structural origin of Owens Valley 30 to 40 million years earlier than previously estimated. This analysis highlights the importance of constraining the initial and boundary conditions of geologic models and exemplifies that this task becomes increasingly difficult deeper in geologic time. Keywords: low-temperature thermochronology; western US tectonics; quantitative thermochronologic modeling 1. Introduction The accuracy of initial and boundary conditions is critical to the development of realistic models of geologic systems. These conditions are often controlled by pre-existing features such as geologic structures and elements of topographic relief. Features can develop under one tectono-climatic regime and persist on geologic time scales, often controlling later geologic evolution by imposing initial and boundary conditions through mechanisms such as the structural reactivation of faults and geomorphic inheritance of landscapes (e.g., [1,2]).
    [Show full text]
  • Vol. 84 Monday, No. 160 August 19, 2019 Pages 42799–43036
    Vol. 84 Monday, No. 160 August 19, 2019 Pages 42799–43036 OFFICE OF THE FEDERAL REGISTER VerDate Sep 11 2014 19:36 Aug 16, 2019 Jkt 247001 PO 00000 Frm 00001 Fmt 4710 Sfmt 4710 E:\FR\FM\19AUWS.LOC 19AUWS jspears on DSK3GMQ082PROD with FR-WS II Federal Register / Vol. 84, No. 160 / Monday, August 19, 2019 The FEDERAL REGISTER (ISSN 0097–6326) is published daily, SUBSCRIPTIONS AND COPIES Monday through Friday, except official holidays, by the Office PUBLIC of the Federal Register, National Archives and Records Administration, under the Federal Register Act (44 U.S.C. Ch. 15) Subscriptions: and the regulations of the Administrative Committee of the Federal Paper or fiche 202–512–1800 Register (1 CFR Ch. I). The Superintendent of Documents, U.S. Assistance with public subscriptions 202–512–1806 Government Publishing Office, is the exclusive distributor of the official edition. Periodicals postage is paid at Washington, DC. General online information 202–512–1530; 1–888–293–6498 Single copies/back copies: The FEDERAL REGISTER provides a uniform system for making available to the public regulations and legal notices issued by Paper or fiche 202–512–1800 Federal agencies. These include Presidential proclamations and Assistance with public single copies 1–866–512–1800 Executive Orders, Federal agency documents having general (Toll-Free) applicability and legal effect, documents required to be published FEDERAL AGENCIES by act of Congress, and other Federal agency documents of public Subscriptions: interest. Assistance with Federal agency subscriptions: Documents are on file for public inspection in the Office of the Federal Register the day before they are published, unless the Email [email protected] issuing agency requests earlier filing.
    [Show full text]
  • Reditabs Viagra
    Bishop Paiute Tribal Council Update The Bishop Indian Tribal Council wishes all of the community a Happy New Year 2018. In reflection of last years efforts to improve the livelihood of our Tribal Members through the growth of Tribal services, we anticipate a successful 2018 ahead. Contin- ue to stay updated with the good things happening in our community by continuing to read our monthly newsletter articles and attend tribal meetings. A new way to com- municate concerns and give feedback on programs directly to the Tribal Council will be to attend our new Monthly CIM (Community Input Meetings), starting with the first one on January 16, 2018 @ 6pm in the Tribal Chambers. Our monthly CIM’s will be an open discussion with the BITC talking about current efforts and concerns the commu- nity may have. As always, If you have any suggestions or comments to assist us in these efforts, please contact Brian Poncho @ 760-873-3584 Ext.1220. Law Enforcement - The Tribal Police Department has began efforts to identify Non-Indians in our community who are participating in drug activity on the Reservation. Once identified the Council will begin efforts of removal off of Tribal Lands. These efforts have been a result of continuous concerns from our tribal community. If you have any concerns about persons Tribal/Non-Tribal on the reservation who may be involved in drug activi- ty please contact our Tribal Police Department. Tribal Police Chief Hernandez can be contacted @ (760) 920-2759 New Gas Station- Plans for a new gas station on the corner of See Vee Ln and Line St have been developed throughout the year 2016-2017 and will begin by Spring 2018.
    [Show full text]
  • Conglomerate Mesa Action Alert Tip Sheet
    Make Your Voice Heard! A public comment period is OPEN for K2 Gold and Mojave Precious Metal’s exploratory drilling at Conglomerate Mesa. They are proposing miles of new road construction and 120 drill holes, spanning 12.1 acres of ancestral tribal lands, cultural resources, scenic landscapes, and threatened habitat. Read below to learn how to submit your public comment before August 30th to protect Conglomerate Mesa from this destructive mining project. Tips For Making Eective Comments Make it personal! Share your story of personal connection to these lands and why you want the area to be protected. Here is a sample letter - please personalize it and make it your own: To Whom it May Concern, I am a resident of [your city] and I strongly oppose K2 Gold’s exploratory drilling project at Conglomerate Mesa. This region is special to me because [insert your special connection to this place, your favorite memories here, etc. - no limit on how much you write! Some examples: ● Conglomerate Mesa is the traditional homelands of the Timbisha Shoshone and Paiute Shoshone Tribal Nations. This area is an important area for pinyon nut harvesting and is one of the many blending zones of transitional territories. Numerous leaders in local tribes have opposed the gold exploration and mining by K2 Gold. I stand united with the Indigenous people in this opposition. ● Conglomerate Mesa is designated as California Desert National Conservation Lands, and these lands are managed to conserve, protect, and restore these nationally signicant ecological, cultural, and scientic values. Mining Conglomerate Mesa would go directly against the intended management of this landscape.
    [Show full text]
  • Mineral Resources and Mineral Resource Potential of the Saline Valley and Lower Saline Wilderness Study Areas Inyo County, California
    UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Mineral resources and mineral resource potential of the Saline Valley and Lower Saline Wilderness Study Areas Inyo County, California Chester T. Wrucke, Sherman P. Marsh, Gary L. Raines, R. Scott Werschky, Richard J. Blakely, and Donald B. Hoover U.S. Geological Survey and Edward L. McHugh, Clay ton M. Rumsey, Richard S. Gaps, and J. Douglas Causey U.S. Bureau of Mines U.S. Geological Survey Open-File Report 84-560 Prepared by U.S. Geological Survey and U.S. Bureau of Mines for U.S. Bureau of Land Management This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. 1984 UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Mineral resources and mineral resource potential of the Saline Valley and Lower Saline Wilderness Study Areas Inyo County, California by Chester T. Wrucke, Sherman P. Marsh, Gary L. Raines, R. Scott Werschky, Richard J. Blakely, and Donald B. Hoover U.S. Geological Survey and Edward L. McHugh, Clayton M. Rumsey, Richard S. Gaps, and J. Douglas Causey U.S. Bureau of Mines U.S. Geological Survey Open-File Report 84-560 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. 1984 ILLUSTRATIONS Plate 1. Mineral resource potential map of the Saline Valley and Lower Saline Wilderness Study Areas, Inyo County, California................................ In pocket Figure 1. Map showing location of Saline Valley and Lower Saline Wilderness Study Areas, California.............. 39 2.
    [Show full text]
  • Figure 6-3. California's Water Infrastructure Network
    DA 17 DA 67 DA 68 DA 22 DA 29 DA 39 DA 40 DA 41 DA 46 N. FORK N. & M. TUOLOMNE YUBA RIVER FORKS CHERRY CREEK, RIVER Figure 6-3. California's Water Infrastructure ELEANOR CREEK AMERICAN M & S FORK RIVER YUBA RIVER New Bullards Hetch Hetchy Res Bar Reservoir GREENHORN O'Shaughnessy Dam Network Configuration for CALVIN (1 of 2) SR- S. FORK NBB CREEK & BEAR DA 32 SR- D17 AMERICAN RIVER HHR DA 42 DA 43 DA 44 RIVER STANISLAUS SR- LL- C27 RIVER & 45 Camp Far West Reservoir DRAFT Folsom Englebright C31 Lake DA 25 DA 27 Canyon Tunnel FEATHER Lake 7 SR- CALAVERAS New RIVER SR-EL CFW SR-8 RIVER Melones Lower Cherry Creek MERCED MOKELUMNE Reservoir SR-10 Aqueduct ACCRETION CAMP C44 RIVER FAR WEST TO DEER CREEK C28 FRENCH DRY RIVER CREEK WHEATLAND GAGE FRESNO New Hogan Lake Oroville DA 70 D67 SAN COSUMNES Lake RIVER SR- 0 SR-6 C308 SR- JOAQUIN Accretion: NHL C29 RIVER 81 CHOWCHILLA American River RIVER New Don Lake McClure Folsom to Fair D9 DRY Pardee Pedro SR- New Exchequer RIVER Oaks Reservoir 20 CREEK Reservoir Dam SR- Hensley Lake DA 14 Tulloch Reservoir SR- C33 Lake Natoma PR Hidden Dam Nimbus Dam TR Millerton Lake SR-52 Friant Dam C23 KELLY RIDGE Accretion: Eastside Eastman Lake Bypass Accretion: Accretion: Buchanan Dam C24 Yuba Urban DA 59 Camanche Melones to D16 Upper Merced D64 SR- C37 Reservoir C40 2 SR-18 Goodwin River 53 D62 SR- La Grange Dam 2 CR Goodwin Reservoir D66 Folsom South Canal Mokelumne River Aqueduct Accretion: 2 D64 depletion: Upper C17 D65 Losses D85 C39 Goodwin to 3 Merced River 3 3a D63 DEPLETION mouth C31 2 C25 C31 D37
    [Show full text]
  • 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.
    [Show full text]
  • Chapter 8 Manzanar
    CHAPTER 8 MANZANAR Introduction The Manzanar Relocation Center, initially referred to as the “Owens Valley Reception Center”, was located at about 36oo44' N latitude and 118 09'W longitude, and at about 3,900 feet elevation in east-central California’s Inyo County (Figure 8.1). Independence lay about six miles north and Lone Pine approximately ten miles south along U.S. highway 395. Los Angeles is about 225 miles to the south and Las Vegas approximately 230 miles to the southeast. The relocation center was named after Manzanar, a turn-of-the-century fruit town at the site that disappeared after the City of Los Angeles purchased its land and water. The Los Angeles Aqueduct lies about a mile to the east. The Works Progress Administration (1939, p. 517-518), on the eve of World War II, described this area as: This section of US 395 penetrates a land of contrasts–cool crests and burning lowlands, fertile agricultural regions and untamed deserts. It is a land where Indians made a last stand against the invading white man, where bandits sought refuge from early vigilante retribution; a land of fortunes–past and present–in gold, silver, tungsten, marble, soda, and borax; and a land esteemed by sportsmen because of scores of lakes and streams abounding with trout and forests alive with game. The highway follows the irregular base of the towering Sierra Nevada, past the highest peak in any of the States–Mount Whitney–at the western approach to Death Valley, the Nation’s lowest, and hottest, area. The following pages address: 1) the physical and human setting in which Manzanar was located; 2) why east central California was selected for a relocation center; 3) the structural layout of Manzanar; 4) the origins of Manzanar’s evacuees; 5) how Manzanar’s evacuees interacted with the physical and human environments of east central California; 6) relocation patterns of Manzanar’s evacuees; 7) the fate of Manzanar after closing; and 8) the impact of Manzanar on east central California some 60 years after closing.
    [Show full text]
  • Mineral Resources of the Southern Inyo Wilderness Study Area, Inyo County, California
    Mineral Resources of the Southern Inyo Wilderness Study Area, Inyo County, California U.S. GEOLOGICAL SURVEY BULLETIN 1705-B Chapter B Mineral Resources of the Southern Inyo Wilderness Study Area, Inyo County, California By JAMES E. CONRAD, JAMES E. KILBURN, and RICHARD J.BLAKELY U.S. Geological Survey CHARLES SABINE, ERIC E. GATHER, LUCIA KUIZON, and MICHAEL C.HORN U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1705 MINERAL RESOURCES OF WILDERNESS STUDY AREAS: SOUTH-CENTRAL CALIFORNIA DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1987 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center, Box 25425 Denver, CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Southern Inyo Wilderness Study Area, Inyo County, California. U.S. Geological Survey Bulletin 1705-B Bibliography Supt. of Docs. No.: I 19.3:1705-6 1. Mines and mineral resources California Southern Inyo Wilderness. I. Conrad, James E. II. Series. QE75.B9 No. 1705-B 557.3 s 87-600133 [TN24.C2] [553'.09794'87] STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Area The Federal Land Policy and Management Act (Public Law 94-579, October 21,1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine the mineral values, if any, that may be present. Results must be made available to the public and be submitted to the President and the Congress.
    [Show full text]
  • The Abandonment of the Cerro Gordo Silver Mining Claim 1869-1879: Abstracted to the Exchange of Energies Marley Mclaughlin Chapman University
    Voces Novae Volume 6 Article 4 2018 The Abandonment of the Cerro Gordo Silver Mining Claim 1869-1879: Abstracted to the Exchange of Energies Marley McLaughlin Chapman University Follow this and additional works at: https://digitalcommons.chapman.edu/vocesnovae Recommended Citation McLaughlin, Marley (2018) "The Abandonment of the Cerro Gordo Silver Mining Claim 1869-1879: Abstracted to the Exchange of Energies," Voces Novae: Vol. 6 , Article 4. Available at: https://digitalcommons.chapman.edu/vocesnovae/vol6/iss1/4 This Article is brought to you for free and open access by Chapman University Digital Commons. It has been accepted for inclusion in Voces Novae by an authorized editor of Chapman University Digital Commons. For more information, please contact [email protected]. McLaughlin: The Abandonment of the Cerro Gordo Silver Mining Claim 1869-1879: The Abandonment of Cerro Gordo Voces Novae: Chapman University Historical Review, Vol 6, No 1 (2014) HOME ABOUT USER HOME SEARCH CURRENT ARCHIVES PHI ALPHA THETA Home > Vol 6, No 1 (2014) The Abandonment of the Cerro Gordo Silver Mining Claim 1869--1879: Abstracted to the Exchange of Energies Marley McLaughlin The mountain air of November echoed the screeching of brake pads from one lone stagecoach as it bumped down the Inyo mountain range's Yellow Grade Road in 1879. The 8,000--foot descent down the wagon road sent that last sound careening from the mine of Cerro Gordo as if the land was celebrating its own emptiness. After the fall of the mine's heyday years, all but the physical body of the town proved evanescent. Pioneers loaded the last wagon with only a couple bars of lead and one 420--pound ingot of pure silver despite the town's promise of wealth.[1]The metals, brick, and wood left scattered in the town were more enduring than men.
    [Show full text]
  • Nature and Significance of the Inyo Thrust Fault, Eastern California: Discussion and Reply
    Nature and significance of the Inyo thrust fault, eastern California: Discussion and reply Discussion GEORGE C. DUNNE Department of Geosciences, California State University, Northridge, Northridge, California 91324 RACHEL M. GULLIVER Envicom Corporation, 4521 Sherman Oaks Avenue, Sherman Oaks, California 91403 INTRODUCTION Olson (1972, Fig. 2). Also included in Fig- caught between two downward-convergent ure 1 are our alternative interpretations of faults, one of which truncates the other; Stevens and Olson (1972) proposed that the geology along their cross-section lines. folding is observed in one area, but it seems a complexly faulted area at the west base of We base our interpretations on 11 days of to result from drag along one of the faults. the northern Inyo Mountains is a window field work in the Tinemaha area. Locations 2, 3: The elongate mass of Or- in a folded, large-slip fault they named the We have few disagreements with the dovician chert and an adjacent elongate ex- Inyo thrust fault. On the basis of their rec- more objective aspects of the geologic posure of Mississippian rock are essentially ognition of this window and earlier struc- mapping of Stevens and Olson. We agree in homoclinal, separated by steep faults that tural interpretations by Stevens (1969, general with their identification and map dip toward the younger sequence (see cross 1970), Stevens and Olson proposed a distribution of rock units, although we sus- section C, Fig. 1). Location 5: The tectonic model in which the Inyo thrust pect that some units on hills 1 and 4 (Fig. 1) arrowhead-shaped contact between older fault played a major role in the Mesozoic are misidentified.
    [Show full text]