DOCSLIB.ORG

Climate-Controlled Landscape Evolution in the Western Transverse

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Climate-Controlled Landscape Evolution in the Western Transverse Climate-controlled landscape evolution in the Western Transverse Ranges, California: Insights from Quaternary geochronology of the Saugus Formation and strath terrace fl ights Duane E. DeVecchio1, Richard V. Heermance2, Markus Fuchs3, and Lewis A. Owen4 1EARTH RESEARCH INSTITUTE, UNIVERSITY OF CALIFORNIA, SANTA BARBARA, CALIFORNIA 93106-9630, USA 2DEPARTMENT OF GEOLOGICAL SCIENCES, CALIFORNIA STATE UNIVERSITY, NORTHRIDGE, CALIFORNIA 91107, USA 3DEPARTMENT OF GEOGRAPHY, JUSTUS-LIEBIG-UNIVERSITY GIESSEN, 35390 GIESSEN, GERMANY 4DEPARTMENT OF GEOLOGY, UNIVERSITY OF CINCINNATI, CINCINNATI, OHIO 45221, USA ABSTRACT The Las Posas and Ojai Valleys, located in the actively deforming Western Transverse Ranges of California, contain well-preserved fl ights of strath terraces and Quaternary strata (i.e., Saugus Formation) that when numerically dated elucidate the tectonic, geomorphic, and fl uvial histories that sculpted the landscape since ca. 140 ka. This study includes 14 new optically stimulated luminescence and 16 new terrestrial cosmogenic nuclide ages from the late Pleistocene to Holocene that record two regional aggradation events and four intervals of strath terrace formation. Geochronologic data indicate that terrestrial Saugus strata in the Las Posas Valley (Camarillo Member) prograded over marine deposits at ca. 125 and 80 ka and are as young as 60–25 ka, which is an order of magnitude younger than the youngest Saugus strata elsewhere in Southern California. These results highlight the need for precise dating of Saugus strata where identifi ed and utilized to assess rates of tectonic deformation. Based on its compositional character, thickness, stratigraphic relations, and inferred ages, the Camarillo member of the Saugus Formation is correlated with sediments of the Mugu aquifer identifi ed in subcrop throughout the Ventura Basin and thus provides a new regional chronostratigraphic subsurface datum. The aggradation of these sediments and similar deposits in the study area between 13 and 4 ka is subsequent to the transition from humid to semiarid climate correlating to the end of the ultimate and penultimate glacial maximums. Aggradation is inferred to have resulted from increased sediment supply in response transient vegetative conditions and consequent hillslope destabilization. Similar to aggradational events, strath terrace cover sediments ages correlate to dry warm climate intervals, indicating straths in Southern California were cut at ca. 110–100 ka, 50–35 ka, 26–20 ka, and 15–4 ka. These results support recent mathematical and experimental models of strath formation, where increased sediment fl ux and decreased water discharge enhances lateral erosion rates and inhibits vertical incision. Subsequent incision and strath terrace formation is inferred to occur during intervening wet climate intervals. The correlation of strath terrace ages and aggradational events with environmental changes that are linked to global climate indicates that climate rather than tectonics exhibits fi rst-order control of depositional, denudational, and incisional processes in the Western Transverse Ranges. Moreover, these results provide a chronostratigraphic framework that allows these landforms to be regionally correlated and used to assess rates of active tectonics where geochronologic data are unavailable. LITHOSPHERE; v. 4; no. 2; p. 110–130; GSA Data Repository Item 2012077. doi: 10.1130/L176.1 INTRODUCTION which are capable of numerically dating a variety of Earth materials over time scales of 105 yr, detailed chronologies can now be developed for In actively deforming regions, landscape evolution is controlled by regions that have previously lacked late Quaternary geochronological data the interplay between tectonics and climate, which modulate deposi- (e.g., National Research Council, 2010). This study provides insight into tional, incisional, and denudational processes (e.g., Whipple and Tucker, the processes governing landscape evolution and develops a chronologic 1999; Anders et al., 2005; Wobus et al., 2006; Kamp and Owen, 2012). framework for estimating ages of regional geomorphic features that can Consequently, quantifi cation of the age of both erosional landforms and be used for quantifying tectonic and geomorphic processes where site- depositional strata provides critical insight into the effects of past climate specifi c geochronology is otherwise unavailable. variability and active faulting of Earth’s surface. Furthermore, an under- The Western Transverse Ranges of Southern California are an ideal standing of the effects of climatic and/or tectonic changes on erosion and location to study the driving forces of landscape evolution because the aggradation is critical to modeling all aspects of the landscape linked region is easily accessible and has a well-documented late Pleistocene pre- to rock, ocean, and atmospheric systems, and for quantifying local and cipitation (e.g., Kirby et al., 2006), sedimentation (Kennett et al., 1995), regional earthquake hazard (e.g., Rockwell, 1983; Rinaldo et al., 1995; vegetation (Heusser, 1995), and tectonic history (e.g., Yeats, 1988a). In Whipple et al., 1999; Roering et al., 2007). With increasingly widespread addition, the need for precise rates of active faulting in Southern Cali- usage of Quaternary geochronological techniques, such as optically stim- fornia necessitates geochronological investigation of deformed landforms ulated luminescence (OSL) and terrestrial cosmogenic nuclides (TCNs), and sedimentary deposits. However, few ages based on geochronological 110 For permission to copy, contact [email protected] | |Volume © 2012 4 Geological | Number Society2 | LITHOSPHERE of America Downloaded from http://pubs.geoscienceworld.org/gsa/lithosphere/article-pdf/4/2/110/3049965/110.pdf by guest on 27 September 2021 Landscape evolution in the Western Transverse Ranges | RESEARCH data of landscape features in this region exist. Therefore, this study focuses Strath terraces are common along rivers within the Western Trans- on numerical dating of late Pleistocene aggradational deposits, including verse Ranges, are shown on numerous geologic maps (e.g., Kew, 1924; the Saugus Formation, and bedrock strath terraces preserved in the Las Rockwell et al., 1988; Dibblee, 1992a, 1992b), and are widely used in Posas and Ojai Valleys (Fig. 1). These study areas are actively deform- fl uvial and tectonic studies (e.g., Rockwell et al., 1984). However, the ing (Rockwell et al., 1984; Yeats, 1988b; DeVecchio et al., 2012) and are processes that control their formation are still debated (e.g., Bull, 1991; characterized by different rates and styles of tectonic deformation, and, Pazzaglia et al., 1998; Hancock and Anderson, 2002; Wegmann and Paz- therefore, they are ideal for comparing the effects of local tectonics and zaglia, 2009; Finnegan and Dietrich, 2011). Strath terraces represent global climate oscillations on the depositional and denudational processes ancient and now-abandoned river fl oodplains that formed during periods that control landscape evolution. of valley-bottom widening by lateral planation. Bull (1990) suggested The Saugus Formation is of particular interest because it is a region- that lateral erosion and strath cutting are the dominant processes when ally extensive Pliocene–Pleistocene shallow-marine and terrestrial streams are in dynamic equilibrium, where river discharge and sediment sedi mentary deposit that is deformed across numerous active faults load are in balance. Recent quantitative fi eld studies and conceptual and and folds within the Western Transverse Ranges (Fig. 1) (e.g., Hershey, numerical models predict they form in response to balanced or oscillating 1902; Kew, 1924; Yeats, 1988b). The forma tion is commonly cited sediment supply (Formento-Trigilio et al., 2003; Hancock and Anderson, as the youngest unit involved in tectonic deformation and has been 2002, respectively), elevated sediment supply (Fuller et al., 2009), and/or reported in numerous consulting reports and paleoseismic trench logs, periods of stable base level (Pazzaglia and Gardener, 1993). Experimental and its inferred upper age limit (200–500 ka) is typically utilized for results indicate that during high sediment supply, transient fl uvial deposits assessing rates of tectonic deformation (e.g., Weber et al., 1976; Yeats, inhibit incision by armoring the channel (e.g., Sklar and Dietrich, 2001), 1983; Yeats et al., 1988; Huftile, 1991; Huftile and Yeats, 1995, 1996; which leads to a wider band of active erosion and lateral channel erosion Baldwin et al., 2000; Meigs et al., 2003; Geosoils, Inc., 2007). There- (Finnegan et al., 2007). As experimental and mathematical models con- fore, the age of the Saugus Formation is critical for evaluating rates of tinue to unravel the complexities in the processes controlling strath forma- deformation on numerous active structures in the Western Transverse tion, fi eld-based studies are required to compare local driving mechanisms Ranges. Unfortunately, the Saugus Formation is poorly defi ned, highly with predicted forcings. By focusing on high-precision numerical dating variable, and regionally diachronous (Blackie and Yeats, 1976; Levi of these denudational landforms, in addition to aggradational deposits, and and Yeats, 1993; Levi et al., 1986; Yeats, 1983). Thus, the upper age of correlation of these features to the well-documented climate proxy records the Saugus is poorly known. of Southern California, we illuminate the effects of water discharge
Load more

Recommended publications
  • Erosion and Sediment Yields in the Transverse Ranges, Southern California
    Erosion and Sediment Yields in the Transverse Ranges, Southern California By KEVIN M. SCOTT and RHEA P. WILLIAMS GEOLOGICAL SURVEY PROFESSIONAL PAPER 1030 Prepared in cooperation with the Ventura County Department of Public Works and the Ojai Resource Conservation District UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1978 UNITED STATES DEPARTMENT OF THE INTERIOR CECIL D. ANDRUS, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress Cataloging in Publication Data Scott, Kevin M 1935- Erosion and sediment yields in the Transverse Ranges, southern California. (Professional paper—U.S. Geological Survey ; 1030) Bibliography: p. 1. Erosion—California—Transverse Ranges. 2. Sediments (Geology)—California—Transverse Ranges. 3. Sedi­ mentation and deposition. I. Williams, Rhea P., joint author. II. Title. III. Series: United States. Geological Survey. Professional paper ; 1030. QE571.S4 551.3'02'0979492 77-608034 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 024-001-03034-9 CONTENTS Page Page Abstract ________________________________ 1 Methods of data analysis ____-----__---_---- — _____ 15 Introduction _______________________________ 1 Physiographic characteristics _ — ___ —— ___ — - 16 Previous work __________________________ 2 Soil erodibility _____________-_-_--_--_-------- 18 Purpose, scope, and methods ___________________ 3 Slope failure _______--_---- ———— _- ——— ---- — 20 Acknowledgments ___________________________ 4 20 The environment _________________________________
    [Show full text]
  • Pamphlet to Accompany Geologic Map of the Apache Canyon 7.5
    GEOLOGIC MAP AND DIGITAL DATABASE OF THE APACHE CANYON 7.5’ QUADRANGLE, VENTURA AND KERN COUNTIES, CALIFORNIA By Paul Stone1 Digital preparation by P.M. Cossette2 Pamphlet to accompany: Open-File Report 00-359 Version 1.0 2000 This report is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. This database, identified as "Geologic map and digital database of the Apache Canyon 7.5’ quadrangle, Ventura and Kern Counties, California," has been approved for release and publication by the Director of the USGS. Although this database has been reviewed and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. This database is released on condition that neither the USGS nor the U. S. Government may be held liable for any damages resulting from its use. U.S. Geological Survey 1 345 Middlefield Road, Menlo Park, CA 94025 2 West 904 Riverside Avenue, Spokane, WA 99201 1 CONTENTS Geologic Explanation............................................................................................................. 3 Introduction................................................................................................................................. 3 Stratigraphy................................................................................................................................ 4 Structure ....................................................................................................................................
    [Show full text]
  • Chapter 5: Parks, Recreation, and Open Space
    5 Parks, Recreation, and Open Space This chapter is a guide to the parks, recreation and open space resources in Humboldt County. Humboldt is home to recreational, park, and open space resources of statewide, nationwide, and even global significance. With this in mind, the first two sections describe these resources, while the final section addresses existing policies and policy issues identified during Phase I along with policy options that respond to them. 5.1 PARK AND RECREATION FACILITIES Humboldt County has a wealth of outdoor recreational opportunities and areas of incomparable value and unsurpassed beauty. More than twenty percent of the county’s 2.3 million acres are protected open space, forests, and recreation areas. Within the county boundaries, there are 4 federal parks and beaches, 10 state parks (3 of which are encompassed by Redwood National Park), 16 county parks and beaches, recreational areas and reserves, and National Parkland and National Forest land. These areas contribute to the quality of life in Humboldt County and provide needed recreation opportunities for residents of neighboring counties and from all over the world as well. Parklands are important elements of the Humboldt economy through both their role in the timber industry and the tourist industry. As tourism eclipses timber as the stronghold of Humboldt’s economy, parks and recreational resources will prove of greater and greater value to Humboldt’s future. The natural qualities of Humboldt County attract a great many people from outside the county. The tourist industry and demand for park resources in Humboldt are linked to the accessibility of parkland.
    [Show full text]
  • Late Cenozoic Tectonics of the Central and Southern Coast Ranges of California
    OVERVIEW Late Cenozoic tectonics of the central and southern Coast Ranges of California Benjamin M. Page* Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115 George A. Thompson† Department of Geophysics, Stanford University, Stanford, California 94305-2215 Robert G. Coleman Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115 ABSTRACT within the Coast Ranges is ascribed in large Taliaferro (e.g., 1943). A prodigious amount of part to the well-established change in plate mo- geologic mapping by T. W. Dibblee, Jr., pre- The central and southern Coast Ranges tions at about 3.5 Ma. sented the areal geology in a form that made gen- of California coincide with the broad Pa- eral interpretations possible. E. H. Bailey, W. P. cific–North American plate boundary. The INTRODUCTION Irwin, D. L. Jones, M. C. Blake, and R. J. ranges formed during the transform regime, McLaughlin of the U.S. Geological Survey and but show little direct mechanical relation to The California Coast Ranges province encom- W. R. Dickinson are among many who have con- strike-slip faulting. After late Miocene defor- passes a system of elongate mountains and inter- tributed enormously to the present understanding mation, two recent generations of range build- vening valleys collectively extending southeast- of the Coast Ranges. Representative references ing occurred: (1) folding and thrusting, begin- ward from the latitude of Cape Mendocino (or by these and many other individuals were cited in ning ca. 3.5 Ma and increasing at 0.4 Ma, and beyond) to the Transverse Ranges. This paper Page (1981).
    [Show full text]
  • Geologic Gems of California's State Parks
    STATE OF CALIFORNIA – EDMUND G. BROWN JR., GOVERNOR NATURAL RESOURCES AGENCY – JOHN LAIRD, SECRETARY CALIFORNIA GEOLOGICAL SURVEY DEPARTMENT OF PARKS AND RECREATION – LISA MANGAT, DIRECTOR JOHN D. PARRISH, Ph.D., STATE GEOLOGIST DEPARTMENT OF CONSERVATION – DAVID BUNN, DIRECTOR PLATE 1 The rugged cliffs of Del Norte Coast Redwoods State Park are composed of some of California’s Bio-regions the most tortured, twisted, and mobile rocks of the North American continent. The California’s Geomorphic Provinces rocks are mostly buried beneath soils and covered by vigorous redwood forests, which thrive in a climate famous for summer fog and powerful winter storms. The rocks only reveal themselves in steep stream banks, along road and trail cut banks, along the precipitous coastal cliffs and offshore in the form of towering rock monuments or sea stacks. (Photograph by CalTrans staff.) Few of California’s State parks display impressive monoliths adorned like a Patrick’s Point State Park displays a snapshot of geologic processes that have castle with towering spires and few permit rock climbing. Castle Crags State shaped the face of western North America, and that continue today. The rocks Park is an exception. The scenic beauty is best enjoyed from a distant exposed in the seacliffs and offshore represent dynamic interplay between the vantage point where one can see the range of surrounding landforms. The The Klamath Mountains consist of several rugged ranges and deep canyons. Klamath/North Coast Bioregion San Joaquin Valley Colorado Desert subducting oceanic tectonic plate (Gorda Plate) and the continental North American monolith and its surroundings are a microcosm of the Klamath Mountains The mountains reach elevations of 6,000 to 8,000 feet.
    [Show full text]
  • 4.3 Cultural Resources
    4.3 CULTURAL RESOURCES INTRODUCTION W & S Consultants, (W&S) conducted an archaeological survey of the project site that included an archival record search conducted at the local California Historic Resource Information System (CHRIS) repository at the South Central Coastal Information Center (SCCIC) located on the campus of California State University, Fullerton. In July 2010, a field survey of the 1.2-mile proposed project site was conducted. The archaeological survey report can be found in Appendix 4.3. Mitigation measures are recommended which would reduce potential impacts to unknown archeological resources within the project site, potential impacts to paleontological resources, and the discovery of human remains during construction to less than significant. PROJECT BACKGROUND Ethnographic Setting Tataviam The upper Santa Clara Valley region, including the study area, was inhabited during the ethnographic past by an ethnolinguistic group known as the Tataviam.1 Their language represents a member of the Takic branch of the Uto-Aztecan linguistic family.2 In this sense, it was related to other Takic languages in the Los Angeles County region, such as Gabrielino/Fernandeño (Tongva) of the Los Angeles Basin proper, and Kitanemuk of the Antelope Valley. The Tataviam are thought to have inhabited the upper Santa Clara River drainage from about Piru eastwards to just beyond the Vasquez Rocks/Agua Dulce area; southwards as far as Newhall and the crests of the San Gabriel and Santa Susana Mountains; and northwards to include the middle reaches of Piru Creek, the Liebre Mountains, and the southwesternmost fringe of Antelope Valley.3 Their northern boundary most likely ran along the northern foothills of the Liebre Mountains (i.e., the edge of Antelope Valley), and then crossed to the southern slopes of the Sawmill Mountains and Sierra Pelona, extending 1 NEA, and King, Chester.
    [Show full text]
  • Three Chumash-Style Pictograph Sites in Fernandeño Territory
    THREE CHUMASH-STYLE PICTOGRAPH SITES IN FERNANDEÑO TERRITORY ALBERT KNIGHT SANTA BARBARA MUSEUM OF NATURAL HISTORY There are three significant archaeology sites in the eastern Simi Hills that have an elaborate polychrome pictograph component. Numerous additional small loci of rock art and major midden deposits that are rich in artifacts also characterize these three sites. One of these sites, the “Burro Flats” site, has the most colorful, elaborate, and well-preserved pictographs in the region south of the Santa Clara River and west of the Los Angeles Basin and the San Fernando Valley. Almost all other painted rock art in this region consists of red-only paintings. During the pre-contact era, the eastern Simi Hills/west San Fernando Valley area was inhabited by a mix of Eastern Coastal Chumash and Fernandeño. The style of the paintings at the three sites (CA-VEN-1072, VEN-149, and LAN-357) is clearly the same as that found in Chumash territory. If the quantity and the quality of rock art are good indicators, then it is probable that these three sites were some of the most important ceremonial sites for the region. An examination of these sites has the potential to help us better understand this area of cultural interaction. This article discusses the polychrome rock art at the Burro Flats site (VEN-1072), the Lake Manor site (VEN-148/149), and the Chatsworth site (LAN-357). All three of these sites are located in rock shelters in the eastern Simi Hills. The Simi Hills are mostly located in southeast Ventura County, although the eastern end is in Los Angeles County (Figure 1).
    [Show full text]
  • 16. Watershed Assets Assessment Report
    16. Watershed Assets Assessment Report Jingfen Sheng John P. Wilson Acknowledgements: Financial support for this work was provided by the San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy and the County of Los Angeles, as part of the “Green Visions Plan for 21st Century Southern California” Project. The authors thank Jennifer Wolch for her comments and edits on this report. The authors would also like to thank Frank Simpson for his input on this report. Prepared for: San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy 900 South Fremont Avenue, Alhambra, California 91802-1460 Photography: Cover, left to right: Arroyo Simi within the city of Moorpark (Jaime Sayre/Jingfen Sheng); eastern Calleguas Creek Watershed tributaries, classifi ed by Strahler stream order (Jingfen Sheng); Morris Dam (Jaime Sayre/Jingfen Sheng). All in-text photos are credited to Jaime Sayre/ Jingfen Sheng, with the exceptions of Photo 4.6 (http://www.you-are- here.com/location/la_river.html) and Photo 4.7 (digital-library.csun.edu/ cdm4/browse.php?...). Preferred Citation: Sheng, J. and Wilson, J.P. 2008. The Green Visions Plan for 21st Century Southern California. 16. Watershed Assets Assessment Report. University of Southern California GIS Research Laboratory and Center for Sustainable Cities, Los Angeles, California. This report was printed on recycled paper. The mission of the Green Visions Plan for 21st Century Southern California is to offer a guide to habitat conservation, watershed health and recreational open space for the Los Angeles metropolitan region. The Plan will also provide decision support tools to nurture a living green matrix for southern California.
    [Show full text]
  • Sespe Creek Comprehensive Wild and Scenic River Management Plan, Los Padres National Forest
    Comprehensive River United States Department of Management Plan Agriculture Forest Service Sespe Creek Pacific Southwest Region R5-MB-038 Los Padres National Forest November 2003 The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer. Contents Introduction .................................................................................................................................................. 1 Description of River Setting and Resource Values .................................................................................... 4 Regional River Setting ............................................................................................................................ 4 Free-flowing values and impacts ............................................................................................................. 4 Outstandingly
    [Show full text]
  • Santa Monica Mountains National Recreation Area Geologic Resources Inventory Report
    National Park Service U.S. Department of the Interior Natural Resource Stewardship and Science Santa Monica Mountains National Recreation Area Geologic Resources Inventory Report Natural Resource Report NPS/NRSS/GRD/NRR—2016/1297 ON THE COVER: Photograph of Boney Mountain (and the Milky Way). The Santa Monica Mountains are part of the Transverse Ranges. The backbone of the range skirts the northern edges of the Los Angeles Basin and Santa Monica Bay before descending into the Pacific Ocean at Point Mugu. The ridgeline of Boney Mountain is composed on Conejo Volcanics, which erupted as part of a shield volcano about 15 million years ago. National Park Service photograph available at http://www.nps.gov/samo/learn/photosmultimedia/index.htm. THIS PAGE: Photograph of Point Dume. Santa Monica Mountains National Recreation Area comprises a vast and varied California landscape in and around the greater Los Angeles metropolitan area and includes 64 km (40 mi) of ocean shoreline. The mild climate allows visitors to enjoy the park’s scenic, natural, and cultural resources year-round. National Park Service photograph available at https://www.flickr.com/photos/ santamonicamtns/albums. Santa Monica Mountains National Recreation Area Geologic Resources Inventory Report Natural Resource Report NPS/NRSS/GRD/NRR—2016/1297 Katie KellerLynn Colorado State University Research Associate National Park Service Geologic Resources Division Geologic Resources Inventory PO Box 25287 Denver, CO 80225 September 2016 U.S. Department of the Interior National Park Service Natural Resource Stewardship and Science Fort Collins, Colorado The National Park Service, Natural Resource Stewardship and Science office in Fort Collins, Colorado, publishes a range of reports that address natural resource topics.
    [Show full text]
  • Rim of the Valley Corridor Special Resource Study U.S
    National Park Service Rim of the Valley Corridor Special Resource Study U.S. Department of the Interior Rim of the Valley Corridor Special Resource Study Newsletter #4 • Spring 2015 Oat Mountain area in the Santa Susana Mountains. Photo: Steve Matsuda. See Page 2 for Draft Special Resource Study & Environmental Public Meeting Assessment Report Available for Review Schedule! Dear Friends, About the National Park Service The National Park Service preserves It is with great pleasure that the National Park Service (NPS) offers the Rim of unimpaired the natural and cultural the Valley Draft Special Resource Study and Environmental Assessment to you resources and values of the national park system for the enjoyment, for review and comment. This newsletter contains the executive summary of education, and inspiration of this and the draft study report and information about how to submit comments and future generations. The NPS cooperates with partners to extend the benefits participate in public meetings to learn more about the draft study report. of natural and cultural resource conservation and outdoor recreation The NPS initiated this special resource study in 2010 and published preliminary throughout this country and the world. management alternatives in late 2012. This study report reflects your initial involvement and input into the planning process. The study alternatives and Newsletter Contents their concepts reflect your concerns and ideas. How to Obtain a Copy of the Draft Report ......................... 2 The full draft report is posted on the study website at: http://www.nps.gov/ How to Provide Comments ............. 2 pwro/rimofthevalley, and limited printed copies are available from the National Public Meeting Schedule ................
    [Show full text]
  • To Oral History
    100 E. Main St. [email protected] Ventura, CA 93001 (805) 653-0323 x 320 QUARTERLY JOURNAL SUBJECT INDEX About the Index The index to Quarterly subjects represents journals published from 1955 to 2000. Fully capitalized access terms are from Library of Congress Subject Headings. For further information, contact the Librarian. Subject to availability, some back issues of the Quarterly may be ordered by contacting the Museum Store: 805-653-0323 x 316. A AB 218 (Assembly Bill 218), 17/3:1-29, 21 ill.; 30/4:8 AB 442 (Assembly Bill 442), 17/1:2-15 Abadie, (Señor) Domingo, 1/4:3, 8n3; 17/2:ABA Abadie, William, 17/2:ABA Abbott, Perry, 8/2:23 Abella, (Fray) Ramon, 22/2:7 Ablett, Charles E., 10/3:4; 25/1:5 Absco see RAILROADS, Stations Abplanalp, Edward "Ed," 4/2:17; 23/4:49 ill. Abraham, J., 23/4:13 Abu, 10/1:21-23, 24; 26/2:21 Adams, (rented from Juan Camarillo, 1911), 14/1:48 Adams, (Dr.), 4/3:17, 19 Adams, Alpha, 4/1:12, 13 ph. Adams, Asa, 21/3:49; 21/4:2 map Adams, (Mrs.) Asa (Siren), 21/3:49 Adams Canyon, 1/3:16, 5/3:11, 18-20; 17/2:ADA Adams, Eber, 21/3:49 Adams, (Mrs.) Eber (Freelove), 21/3:49 Adams, George F., 9/4:13, 14 Adams, J. H., 4/3:9, 11 Adams, Joachim, 26/1:13 Adams, (Mrs.) Mable Langevin, 14/1:1, 4 ph., 5 Adams, Olen, 29/3:25 Adams, W. G., 22/3:24 Adams, (Mrs.) W.
    [Show full text]