DOCSLIB.ORG

Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe Formation along the Santa Ynez Fault Implications for the Geologic History of the Eastern Santa Maria Basin Area, California Reconnaissance Bulk-Rock and Clay Mineralogies of Argillaceous Great Valley and Franciscan Strata, Santa Maria Basin Province, California Geophysical section offshore Santa Maria basin Geologic section onshore Santa Maria basin U.S. GEOLOGICAL SURVEY BULLETIN 1995-HJ AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications of the U.S. Geological Survey, along with prices of the last offerings, are given in the current- year issues of the monthly catalog "New Publications of the U.S. Geological Survey." Prices of available U.S. Geological Survey publications released prior to the current year are listed in the most recent annual "Price and Availability List." Publications that are listed in various U.S. Geological Survey catalogs (see back inside cover) but not listed in the most recent annual "Price and Availability List" are no longer available. Reports released through the NTIS may be obtained by writing to the National Technical Information Service, U.S. Department of Commerce, Springfield, VA 22161; please include NTIS report number with inquiry. Order U.S. Geological Survey publications by mail or over the counter from the offices given below. BY MAIL OVER THE COUNTER Books Books and Maps Professional Papers, Bulletins, Water-Supply Papers, Tech­ Books and maps of the U.S. Geological Survey are available niques of Water-Resources Investigations, Circulars, publications over the counter at the following U.S. Geological Survey offices, of general interest (such as leaflets, pamphlets, booklets), single all of which are authorized agents of the Superintendent of Docu­ copies of Earthquakes & Volcanoes, Preliminary Determination of ments. Epicenters, and some miscellaneous reports, including some of the foregoing series that have gone out of print at the Superin­ ANCHORAGE, Alaska 4230 University Dr., Rm. 101 tendent of Documents, are obtainable by mail from LAKEWOOD, Colorado Federal Center, Bldg. 810 U.S. Geological Survey, Information Services Box 25286, Federal Center MENLO PARK, California Bldg. 3, Rm. 3128, 345 Mid- Denver, CO 80225 dlefield Rd. Subscriptions to periodicals (Earthquakes & Volcanoes and RESTON, Virginia National Center, Rm. 1C402, 12201 Preliminary Determination of Epicenters) can be obtained ONLY Sunrise Valley Dr. from the SALT LAKE CITY, Utah Federal Bldg., Rm. 8105, 125 Superintendent of Documents South State St. Government Printing Office Washington, DC 20402 SPOKANE, Washington U.S. Post Office Bldg., Rm. 135, W 904 Riverside Ave. (Check or money order must be payable to Superintendent of Documents.) WASHINGTON, D.C. Main Interior Bldg., Rm. 2650, 18th and C Sts., NW. Maps Maps Only For maps, address mail orders to Maps may be purchased over the counter at the U.S. Geologi­ U.S. Geological Survey, Map Distribution cal Survey offices: Box 25286, BIdg. 810, Federal Center Denver, CO 80225 FAIRBANKS, Alaska New Federal Building, 101 Twelfth Ave. Residents of Alaska may order maps from ROLLA, Missouri 1400 Independence Rd. U.S. Geological Survey, Earth Science Information Center 101 Twelfth Ave., Box 12 Fairbanks, AK 99701 STENNIS SPACE CENTER, Mississippi Bldg. 3101 Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe Formation along the Santa Ynez Fault Implications for the Geologic History of the Eastern Santa Maria Basin Area, California By JEFFREY L. HOWARD Reconnaissance Bulk-Rock and Clay Mineralogies of Argillaceous Great Valley and Franciscan Strata, Santa Maria Basin Province, California By RICHARD M. POLLASTRO, HUGH MCLEAN, and LAURA L ZINK Chapters H and I are issued as a single volume and are not available separately U.S. GEOLOGICAL SURVEY BULLETIN 1995 EVOLUTION OF SEDIMENTARY BASINS/ONSHORE OIL AND GAS INVESTIGATIONS- SANTA MARIA PROVINCE Edited by Margaret A. Keller U.S. DEPARTMENT OF THE INTERIOR BRUCE BABBITT, Secretary U.S. GEOLOGICAL SURVEY Gordon P. Eaton, Director Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government Text and illustrations edited by James W. Hendley II UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1995 For sale by U.S. Geological Survey Information Services Box 25286, Federal Center Denver, CO 80225 Library of Congress Cataloging in Publication Data Howard, Jeffrey L. Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe Formation along the Santa Ynez Fault: implications for the geologic history of the eastern Santa Maria Basin area, California / by Jeffrey L. Howard. Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley and Franciscan strata, Santa Maria Basin Province, California / by Richard M. Pollastro, Hugh McLean, and Laura L. Zink. p. cm. (U.S. Geological Survey bulletin ; 1995) (Evolution of sedimentary basins/onshore oil and gas investigations Santa Maria Province ; ch. H, I) "Chapters H and I are issued as a single volume and are not available separately." Includes bibliographical references. Supt. of Docs, no.: I 19.3:1995-H, I 1. Sedimentation and deposition California Santa Maria Basin. 2. Conglomerate California Santa Maria Basin. 3. Geology, Stratigraphic Cenozoic. 4. Sespe Formation (Calif.) 5. Argillite California Santa Maria Basin. 6. Mineralogy California Santa Maria Basin. 7. Santa Maria Basin (Calif.) I. McLean, Hugh, 1939. II. Zink, Laura L. III. Pollastro, Richard M. Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley and Franciscan strata, Santa Maria Basin Province, California. IV. Title. V. Title: Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley and Franciscan strata, Santa Maria Basin Province, California. VI. Series. VII. Series: Evolution of sedimentary basins/onshore oil and gas investigations Santa Maria Province; ch. H, I. QE75.B9 no. 1995-H-l [QE571] 557.3 s dc20 94-39069 [552'.5'09794] CIP Chapter H Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe Formation along the Santa Ynez Fault Implications for the Geologic History of the Eastern Santa Maria Basin Area, California By JEFFREY L. HOWARD U.S. GEOLOGICAL SURVEY BULLETIN 1995 EVOLUTION OF SEDIMENTARY BASINS/ONSHORE OIL AND GAS INVESTIGATIONS- SANTA MARIA PROVINCE Edited by Margaret A. Keller CONTENTS Abstract HI Introduction HI Previous work H2 Methods of study H7 Sedimentology of the Sespe Formation H9 Stratigraphy and paleoenvironments H9 Paleocurrent analysis H14 Conglomerate clast assemblages H14 Metavolcanic clast varieties H19 Conglomerate clast morphology H19 Geologic history of the study area H20 Sespe Conglomerate provenance H20 Depositional history H26 Tectonic history H29 Conclusions H30 References H31 Appendix: List of conglomerate clasts from the Sespe Formation H37 FIGURES 1. Map showing location of study area in eastern Santa Maria basin and Santa Ynez Mountains H2 2. Map of study area showing geographic distribution of Sespe Formation and loca­ tions of measured sectionsH3 3. Correlation chart for Santa Maria basin, Santa Ynez Mountains, and Topatopa Mountains, Calif. H4 4. Stratigraphic nomenclature used previously in Santa Ynez Mountains, Calif. H4 5. Schematic Stratigraphic sections of Sespe Formation in study area Hll 6. Lithologic correlations of Sespe Formation in study area H12 7. Schematic Stratigraphic sections of Sespe Formation in southern Santa Ynez Moun­ tains showing lithologic correlations H12 8. Facies relations between Sespe Formation and laterally equivalent marine units in the central and western Santa Ynez Mountains, Calif. H13 9. Ratios and maximum granitoid/gneiss clast size to maximum quartzite clast size versus distance west of the San Gabriel Fault H19 10. Inferred sediment dispersal directions in study area H24 11. Facies relations between Sespe Formation and laterally equivalent units in Santa Ynez-Topatopa Mountains, Calif. H27 TABLES 1. Lithofacies of the Sespe Formation in eastern Santa Maria basin and vicinity H10 2. Paleocurrent data for lithofacies C of the Sespe Formation in eastern Santa Maria basin HIS 3. Paleocurrent data for Sespe Formation in Santa Ynez Mountains HIS 4. Percentages of clasts in Sespe conglomerates of the eastern Santa Maria basin area H16 IV Contents 5. Maximum observed clast size in Sespe conglomerates of the eastern Santa Maria basin area H17 6. Upsection changes in Sespe conglomerate clast suites HIS 7. Analysis of metavolcanic clast suites in Cretaceous and Paleogene conglomerates by percentage H20 8. Tests for statistically significant differences in metavolcanic clast suites of Sespe and pre-Sespe conglomerates H21 9. Morphologic indices of clasts in Sespe and pre-Sespe conglomerates H22 10. Calculated t-values for tests of statistically significant differences in clast shapes of Sespe conglomerates H22 11. Calculated t-values for tests of statistically significant differences in clast shapes of Sespe and pre-Sespe conglomerates H23 Contents Conglomerates of the Upper Middle Eocene to Lower Miocene Sespe Formation along the Santa Ynez Fault Implications for the Geologic History of the Eastern Santa Maria Basin Area, California By Jeffrey L. Howard1 Abstract INTRODUCTION The depositional history of the Sespe Formation was stud­ The Santa Maria structural basin in southwestern Cali­ ied using sedimentary facies analysis, clast counts, paleocur- fornia is a wedge-shaped
Recommended publications
  • Historic P U B Lic W Ork S P Roje Cts on the Ce N Tra L

    Historic P U B Lic W Ork S P Roje Cts on the Ce N Tra L

    SHTOIRICHISTORIC SHTOIRIC P U B LIC W ORK S P ROJE TSCP ROJE CTS P ROJE TSC ON THE CE N TRA L OCA STCOA ST OCA ST Compiled by Douglas Pike, P.E. Printing Contributed by: Table of Contents Significant Transportation P rojects......2 El Camino Real................................................... 2 US Route 101...................................................... 3 California State Route 1...................................... 6 The Stone Arch Bridge ..................................... 11 Cold Spring Canyon Arch Bridge..................... 12 Significant W ater P rojects...................14 First Dams and Reservoirs................................ 14 First Water Company........................................ 14 Cold Spring Tunnel........................................... 15 Mission Tunnel ................................................. 16 Gibraltar Dam ................................................... 16 Central Coast Conduit....................................... 18 Water Reclamation In Santa Maria Valley....... 23 Twitchell Dam & Reservoir.............................. 24 Santa Maria Levee ............................................ 26 Nacimiento Water Project................................. 28 M iscellaneous P rojects of Interest.......30 Avila Pier .......................................................... 30 Stearns Wharf.................................................... 32 San Luis Obispo (Port Harford) Lighthouse..... 34 Point Conception Lighthouse............................ 35 Piedras Blancas Light ......................................
  • Upper Ventura River Groundwater Agency Notice of Regular Meeting Upper Ventura River Groundwater Agency Board of Directors Regul

    Upper Ventura River Groundwater Agency Notice of Regular Meeting Upper Ventura River Groundwater Agency Board of Directors Regul

    UPPER VENTURA RIVER GROUNDWATER AGENCY NOTICE OF REGULAR MEETING NOTICE IS HEREBY GIVEN that the Upper Ventura River Groundwater Agency (“Agency”) Board of Directors (“Board”) will hold a Regular Board Meeting at 1 P.M. on Thursday, August 13, 2020 via TELECONFERENCE: DIAL-IN (US TOLL FREE) 1-669-900-6833 JOIN BY COMPUTER, TABLET OR SMARTPHONE: https://zoom.us/j/97794334306?pwd=V05Rakx6OEFERUpDRUJYSWJGQy9WZz09 Meeting ID: 977 9433 4306 Passcode: 237498 New to Zoom, go to: https://support.zoom.us/hc/en-us/articles/206175806 PER CALIFORNIA EXECUTIVE ORDER N-29-20, SECTION 3: A local legislative body is authorized to hold public meetings via teleconferencing and to make public meetings accessible telephonically or otherwise electronically to all members of the public seeking to observe and to address the local legislative body. A physical location accessible for the public to participate in the teleconference is not required. UPPER VENTURA RIVER GROUNDWATER AGENCY BOARD OF DIRECTORS REGULAR MEETING AGENDA August 13, 2020 1. MEETING CALL TO ORDER, ROLL CALL, AND PLEDGE OF ALLEGIANCE 2. APPROVAL OF AGENDA 3. PUBLIC COMMENT FOR ITEMS NOT APPEARING ON THE AGENDA The Board will receive public comments on items not appearing on the agenda and within the subject matter jurisdiction of the Agency. The Board will not enter into a detailed discussion or take any action on any items presented during public comments. Such items may only be referred to the Executive Director or other staff for administrative action or scheduled on a subsequent agenda for discussion. Persons wishing to speak on specific agenda items should do so at the time specified for those items.
  • Sespe Creek Comprehensive Wild and Scenic River Management Plan, Los Padres National Forest

    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
  • Board Meeting Agenda

    Board Meeting Agenda

    Board Meeting Agenda Russ Baggerly, Director Pete Kaiser, Director Mary Bergen, Director James Word, Director Bill Hicks, Director CASITAS MUNICIPAL WATER DISTRICT November 13, 2015 3:00 P.M. 1055 Ventura Avenue Oak View, CA 93022 Right to be heard: Members of the public have a right to address the Board directly on any item of interest to the public which is within the subject matter jurisdiction of the Board. The request to be heard should be made immediately before the Board's consideration of the item. No action shall be taken on any item not appearing on the agenda unless the action is otherwise authorized by subdivision (b) of ¶54954.2 of the Government Code and except that members of a legislative body or its staff may briefly respond to statements made or questions posed by persons exercising their public testimony rights under section 54954.3 of the Government Code. 1. Public Comments (items not on the agenda – three minute limit). 2. General Manager comments. 3. Board of Director comments. 4. Board of Director Verbal Reports on Meetings Attended. 5. Consent Agenda a. Minutes of October 28, 2015 Meeting. RECOMMENDED ACTION: Adopt Consent Agenda 6. Bills 7. Resolution amending the Memorandum of Understanding between Castaic Lake Water Agency and Casitas Municipal Water District, The City of San Buenaventura and United Water Conservation District for use of the Flexible Storage Account in Castaic Lake. RECOMMENDED ACTION: Adopt Resolution 1 8. Recommend approval of a change order with Milner-Villa Consulting in the amount of $14,800 to provide for the preparation of an Agricultural Water Management Plan to be incorporated in the 2015 Urban Water Management Plan.
  • Rim of the Valley Corridor Special Resource Study U.S

    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 ................
  • To Oral History

    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.
  • GEOLOGICAL SURVEY Water Resources Division by G. A. Miller

    GEOLOGICAL SURVEY Water Resources Division by G. A. Miller

    UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY Water Resources Division RECONNAISSANCE OF THE GROUND-WATER RESOURCES OF THE ELLWOOD-GAVIOTA AREA SANTA BARBARA COUNTY, CALIFORNIA By G. A. Miller and J. R. Rapp Prepared in cooperation with the Santa Barbara County Water Agency OPEN-FILE REPORT Menlo Park, California April 10, 1968 CONTENTS Page Purpose and scope of the investigation 3 Location and extent of the area 4 Previous investigations 5 Acknowledgments 5 Location-numbering system- 6 -«»«.«_«._«.«» . _«__ » »__ » »« » » »«_.._,.«.» »_.-«._.^«._«.__ _«__ ._. _.^ ._ ._ . .«.«._*-«-«.«-«-«<- «. -«.«. .--. _ 7i *° ___ ._ _ _____ __ __ ___ - __ __ _ ____»«»»_ _____ « __ » 7i Landforms and drainage 8 |°1\J.L TTTlot-QJ-LllCt UtZ . _ _ _ _ _ _ __ _ _ ___ _ ___________ _ __ _ _ _ _ _ ~" _ _ _ _ _ __ _ __ _ ___ _ _ Q~y Natural vegetation 12 Geology and x^ater-bearing characteristics of the rocks 12 Geologic history- 12 O f-L- -V"L cLo 4"L -Lg-t rr T*JL dJJ!D T"l Vlliy IT _ ___ __ ^ _ _ _ _«__ ___ m » _ _ -v _ ___ _____________ _____ __ _ ________ __«v _ _________ j_jI ^\ Consolidated rocks 15 Unconsolidated deposits 17 Water resources 18 Imported water 21 Ground water 22 Occurrence and movement 22 i\ecnarge~" _______ «. .____«._«._«.«._. _«._«._«.«._«.___«. ._ .«.. ___«._ ^^ iJiscnarge ___ ______ _ _ __- _ ____________________ ^.^ OCf-,-.
  • Flora and Ecology of the Santa Monica Mountains Edited by D.A

    Flora and Ecology of the Santa Monica Mountains Edited by D.A

    Flora and Ecology of the Santa Monica Mountains Edited by D.A. Knapp. 2007. Southern California Botanists, Fullerton, CA. 159 FREEZING TOLERANCE IMPACTS CHAPARRAL SPECIES DISTRIBUTION IN THE SANTA MONICA MOUNTAINS Stephen D. Davis1, R. Brandon Pratt2, Frank W. Ewers3, and Anna L. Jacobsen4 1Natural Science Division Pepperdine University, Malibu, CA 90263 [email protected]. 2Department of Biology California State University, Bakersfield Bakersfield, CA 93311 [email protected] 3Biological Sciences Department California State Polytechnic University, Pomona Pomona, CA 91768 [email protected] 4Michigan State University Department of Plant Biology East Lansing, MI 48824 [email protected] ABSTRACT: A shift in chaparral species composition occurs from coastal to inland sites of the Santa Monica Mountains of southern California. Past studies have attributed this pattern to differential adaptations of chaparral species to gradients in moisture and solar radiation. We examined an alternate hypothesis, that shifts in species composition from coastal to inland sites is a result of differential response to freezing and the interactions of freezing with drought. Coastal sites rarely experience air temperatures below 0 °C whereas just 5 to 6 km inland, cold valleys experience temperatures as low as -12 °C. Seasonal drought can last 6 to 8 months and may extend, on rare occasions, into the month of December, coincidental with the onset of winter freeze. Either water stress or freezing, by independent mechanisms, can induce embolism in stem xylem and block water transport from soil to leaves, leading to branchlet dieback or whole shoot death. Water stress in combination with freezing may enhance xylem embolism formation. Post- fire seedlings are especially vulnerable because of greater tissue sensitivity to freezing injury, diminutive roots that preclude access to deep soil moisture or resprout success, and greater exposure to nighttime radiation freezes after canopy removal by fire.
  • 1 Collections

    1 Collections

    A. andersonii A. Gray SANTA CRUZ MANZANITA San Mateo Along Skyline Blvd. between Gulch Road and la Honda Rd. (A. regismontana?) Santa Cruz Along Empire Grade, about 2 miles north of its intersection with Alba Grade. Lat. N. 37° 07', Long. 122° 10' W. Altitude about 2550 feet. Santa Cruz Aong grade (summit) 0.8 mi nw Alba Road junction (2600 ft elev. above and nw of Ben Lomond (town)) - Empire Grade Santa Cruz Near Summit of Opal Creek Rd., Big Basin Redwood State Park. Santa Cruz Near intersection of Empire Grade and Alba Grade. ben Lomond Mountain. Santa Cruz Along China Grade, 0.2 miles NW of its intersection with the Big Basin-Saratoga Summit Rd. Santa Cruz Nisene Marks State Park, Aptos Creek watershed; under PG&E high-voltage transmission line on eastern rim of the creek canyon Santa Cruz Along Redwood Drive 1.5 miles up (north of) from Monte Toyon Santa Cruz Miller's Ranch, summit between Gilroy and Watsonville. Santa Cruz At junction of Alba Road and Empire Road Ben Lomond Ridge summit Santa Cruz Sandy ridges near Bonny Doon - Santa Cruz Mountains Santa Cruz 3 miles NW of Santa Cruz, on upper UC Santa Cruz campus, Marshall Fields Santa Cruz Mt. Madonna Road along summit of the Santa Cruz Mountains. Between Lands End and Manzanitas School. Lat. N. 37° 02', Long. 121° 45' W; elev. 2000 feet Monterey Moro Road, Prunedale (A. pajaroensis?) A. auriculata Eastw. MT. DIABLO MANZANITA Contra Costa Between two major cuts of Cowell Cement Company (w face of ridge) - Mount Diablo, Lime Ridge Contra Costa Immediately south of Nortonville; 37°57'N, 121°53'W Contra Costa Top Pine Canyon Ridge (s-facing slope between the two forks) - Mount Diablo, Emmons Canyon (off Stone Valley) Contra Costa Near fire trail which runs s from large spur (on meridian) heading into Sycamore Canyon - Mount Diablo, Inner Black Hills Contra Costa Off Summit Dr.
  • Nitrogen Cycling and Export in California Chaparral: the Role of Climate in Shaping Ecosystem Responses to Fire

    Nitrogen Cycling and Export in California Chaparral: the Role of Climate in Shaping Ecosystem Responses to Fire

    Ecological Monographs, 87(1), 2017, pp. 76–90 © 2016 by the Ecological Society of America Nitrogen cycling and export in California chaparral: the role of climate in shaping ecosystem responses to fire ERIN J. HANAN,1,2,4 CHRISTINA (NAOMI) TAGUE,3 AND JOSHUA P. SCHIMEL1 1Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California 93106 USA 2Department of Civil and Environmental Engineering, Washington State University, Pullman, Washington 99164 USA 3Bren School of Environmental Science and Management, University of California Santa Barbara, Santa Barbara, California 93106 USA Abstract. Climate change models predict that interannual rainfall variability will increase in California over the next several decades; these changes will likely influence how frequently California ecosystems burn and how they respond to fire. Fires uncouple N mobilization from uptake by destroying plant biomass and increasing nitrification. Following fire, autumn and winter rains can leach N into streams from slopes that have been denuded. The amount of N − exported depends on how rapidly soil microbes metabolize it into mobile forms such as NO3 , and the rate that recovering plants take up available N. However, the long-term effects of a changing climate on postfire N dynamics remain unknown. We used the ecohydrologic model RHESSys (regional hydro- ecologic simulation system) to evaluate how interannual climate variability may affect the magnitude of N mineralization, nitrification, N export, and plant recovery following fire. N export was highest when fire was followed by drought; even though there was less water moving through the system, dry conditions prolonged the period during which N mobilization was decoupled from plant uptake.
  • Water Quality

    Water Quality

    3.5 Water Quality 3.5.1 Surface Water Quality ................................ 429 3.5.2 Groundwater Quality................................. 465 3.5.3 Wastewater Quality .................................. 475 3.5.4 Drinking Water Quality .............................. 485 Water Quality Sampling, Ventura River Just Above San Antonio Creek Confluence Photo courtesy of Santa Barbara Channelkeeper PART 3 • 3.5 WatER QUALITY • 3.5.1 SURFacE WatER QUALITY 429 3.5 Water Quality Water quality in the Ventura River watershed is relatively good. The developed area of the watershed is very limited compared to the open- space areas. Residential, commercial, agricultural, and industrial land Section 303(d) of the Clean uses comprise only 13% of the land area (SCAG 2008); and approxi- mately half of the watershed lies within the Los Padres National Forest. Water Act requires states to However, like most other watersheds where people live and work, the identify waters that do not Ventura River watershed has water quality impairments that need to be meet water quality standards addressed. and to classify them by The description of water quality has been organized into four sections: category. States must submit surface water, groundwater, wastewater, and drinking water. While the regulations for water quality differ for each of these water types, the their lists to the USEPA for water quality issues are often highly interrelated. review and approval. These These sections provide a review of water quality impairments, existing state-developed lists are water quality studies, the regulatory framework, and ongoing monitor- known as Section 303(d) lists ing programs. Many stakeholders, including public agencies, nonprofits, of impaired waterbodies.
  • Flora and Fauna Values

    Flora and Fauna Values

    includes many endemic species – those species found nowhere else in the world except for within one specific region. Roughly 30 endemic animal As part of one of the top 35 global biodiversity hotspots, species and 35 endemic plant species are found in the Santa Barbara Santa Barbara County is home to a remarkable array of region.6 Many have evolved in this area of California because of geograph- species, habitats and transition zones which stem from the ic isolation, rare soil substrates, and limited mobility. Examples of endemic regions unique mix of topography and climate.1 The species in the County include the Lompoc kangaroo rat, kinsel oak, and the FLORA AND County is unique within the California Floristic Province Santa Barbara jewel flower. Many other species are endemic to our region (the biodiversity hotspot the County is in) as it has fewer of California but are found outside the County including the Mount Pinos FAUNA developed or altered natural landscapes than other parts chipmunk, black bellied slender salamander and Cristina’s timema. of the hotspot; this adds to the value for conservation within Santa Barbara County. Vegetation provides habitat and home for the many unique and common animal species in the County, and varies greatly from north to Vegetation communities and species from California’s south, east to west, and often from valley to valley. Of the 31 vegetation Central Coast and South Coast, the Sierra Nevada, and the macrogroups found in California, 19 are found within Santa Barbara San Joaquin Valley can all be found locally due to conver- County.9 Chaparral is the most common vegetation type in the County gence of four ecoregions within the County: Southern and covers much of the upland watersheds where it also serves as a California Coast, Southern California Mountains and Central Coast riverine, riparian ecosystems, and wetlands provide some of natural buffer against erosion.