Landscapes Peninsula Open Space Trust Spring 2014
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Introduction San Andreas Fault: an Overview
Introduction This volume is a general geology field guide to the San Andreas Fault in the San Francisco Bay Area. The first section provides a brief overview of the San Andreas Fault in context to regional California geology, the Bay Area, and earthquake history with emphasis of the section of the fault that ruptured in the Great San Francisco Earthquake of 1906. This first section also contains information useful for discussion and making field observations associated with fault- related landforms, landslides and mass-wasting features, and the plant ecology in the study region. The second section contains field trips and recommended hikes on public lands in the Santa Cruz Mountains, along the San Mateo Coast, and at Point Reyes National Seashore. These trips provide access to the San Andreas Fault and associated faults, and to significant rock exposures and landforms in the vicinity. Note that more stops are provided in each of the sections than might be possible to visit in a day. The extra material is intended to provide optional choices to visit in a region with a wealth of natural resources, and to support discussions and provide information about additional field exploration in the Santa Cruz Mountains region. An early version of the guidebook was used in conjunction with the Pacific SEPM 2004 Fall Field Trip. Selected references provide a more technical and exhaustive overview of the fault system and geology in this field area; for instance, see USGS Professional Paper 1550-E (Wells, 2004). San Andreas Fault: An Overview The catastrophe caused by the 1906 earthquake in the San Francisco region started the study of earthquakes and California geology in earnest. -
Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake
Department of the Interior U.S. Geological Survey Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake | Q|s | Landslides (Quaternary) I yv I Vaqueros Sandstone (Oligocene) r-= I San Lorenzo Fm., Rices Mudstone I TSr I member (Eocene-Oligocene) IT- I Butano Sandstone, ' Pnil mudstone member (Eocene) Coseismic surface fractures, ..... dashed where discontinuous, dotted where projected or obscured ___ _ _ Contact, dashed where approximately located >"«»"'"" « « Fault, dotted where concealed V. 43? Strike and dip Strike and dip of of bedding overturned bedding i Vector Scale / (Horizontal Component of Displacement) OPEN-FILE REPORT 90-274 This report is preliminary and has not been reviewed for conformity with U. S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U. S. Government. Men to Park, California April 27, 1990 Department of the Interior U.S. Geological Survey Field Guide to Neotectonics of the San Andreas Fault System, Santa Cruz Mountains, in Light of the 1989 Loma Prieta Earthquake David P. Schwartz and Daniel J. Ponti, editors U. S. Geological Survey Menlo Park, CA 94025 with contributions by: Robert S. Anderson U.C. Santa Cruz, Santa Cruz, CA William R. Cotton William Cotton and Associates, Los Gatos, CA Kevin J. Coppersmith Geomatrix Consultants, San Francisco, CA Steven D. Ellen U. S. Geological Survey, Menlo Park, CA Edwin L. Harp U. S. Geological Survey, Menlo Park, CA Ralph A. -
Mount Madonna County Park Area Property Acquisition
COASTAL CONSERVANCY Staff Recommendation October 18, 2012 MOUNT MADONNA COUNTY PARK AREA PROPERTY ACQUISITION Project No. 12-033-01 Project Manager: Jeff Melby RECOMMENDED ACTION: Authorization to disburse up to $750,000 to the Peninsula Open Space Trust for acquisition of the 490-acre Mount Madonna County Park Area property in Santa Clara County. LOCATION: West of the City of Gilroy and adjacent to Mount Madonna County Park in unincorporated Santa Clara County. PROGRAM CATEGORY: San Francisco Bay Area Conservancy EXHIBITS Exhibit 1: Project Location and Site Maps Exhibit 2: Project Photographs Exhibit 3: Conservation Lands Network Analysis Exhibit 4: Project Letters RESOLUTION AND FINDINGS: Staff recommends that the State Coastal Conservancy adopt the following resolution pursuant to Sections 31160-31165 of the Public Resources Code: “The State Coastal Conservancy hereby authorizes the disbursement of up to $750,000 (seven hundred fifty thousand dollars) to Peninsula Open Space Trust (POST) for acquisition of the 490-acre Mount Madonna County Park Area property (Santa Clara County Assessor’s Parcel Numbers 756-42-001, 756-47-006, 756-47-007, 756-48-013, and 756-48-011) , more particularly described in Exhibit 1, attached to the accompanying staff recommendation, for the purposes of preserving open space, scenic resources, plant and wildlife communities, and other natural resources; protecting watersheds; and enabling natural resource-compatible public access. This authorization is subject to the following conditions: 1. Prior to disbursement of any Conservancy funds, POST shall submit for review and approval by the Executive Officer of the Conservancy (“the Executive Officer”): a. All relevant acquisition documents including but not limited to the appraisal, environmental assessments, agreement of purchase and sale, easements, escrow Page 1 of 8 MOUNT MADONNA COUNTY PARK AREA PROPERTY ACQUISITION instructions, title reports and documents of title necessary for the purchase of the property. -
USGS Professional Paper 1740
Age, Stratigraphy, and Correlations of the Late Neogene Purisima Formation, Central California Coast Ranges By Charles L. Powell II1, John A. Barron1, Andrei M. Sarna-Wojcicki1, Joseph C. Clark2, Frank A. Perry3, Earl E. Brabb4, and Robert J. Fleck1 Abstract Counties inland to the San Andreas Fault (fig. 1). These scat- tered outcrops have been grouped as the Purisima Formation The Purisima Formation is an important upper Miocene because they are all fine- to coarse-grained clastic rocks, with and Pliocene stratigraphic unit in central California, cropping dark andesitic fragments and locally abundant silicic tephra, out from the coast at Point Reyes north of San Francisco to and occupy the same stratigraphic position at their various more extensive exposures in the Santa Cruz Mountains to the exposures. Since first described by Haehl and Arnold (1904), south. The fine-grained rocks in the lower parts of the Puri- the Purisima Formation has been considered to be of Pliocene sima Formation record a latest Miocene transgressive event, or of late Miocene to Pliocene age. Differing age assignments whereas the middle and upper parts of the formation consist have resulted from the wide stratigraphic range of many com- of increasingly clastic-rich siltstones and sandstones resulting monly encountered megafossils and from the lack of agree- from uplift of adjacent coastal regions and the Sierra Nevada ment on the placement of the Miocene-Pliocene Series bound- during Pliocene transgressive and regressive sea-level events. ary between the provincial megafaunal chronology and that Exposures of the Purisima occur in three different, fault- of international usage. -
Ohlone-Portola Heritage Trail Statement of Significance
State of California Natural Resources Agency Primary# DEPARTMENT OF PARKS AND RECREATION HRI # Trinomial CONTINUATION SHEET Property Name: __California Historical Landmarks Associated with the Ohlone-Portolá Heritage Trail______ Page __1___ of __36__ B10. Statement of Significance (continued): The following Statement of Significance establishes the common historic context for California Historical Landmarks associated with the October-November 1769 expedition of Gaspar de Portolá through what is now San Mateo County, as part of a larger expedition through the southern San Francisco Bay region, encountering different Ohlone communities, known as the Ohlone-Portolá Heritage Trail. This context establishes the significance of these landmark sites as California Historical Landmarks for their association with an individual having a profound influence on the history of California, Gaspar de Portolá, and a group having a profound influence on the history of California, the Ohlone people, both associated with the Portolá Expedition Camp at Expedition. This context amends seven California Historical Landmarks, and creates two new California Historical Landmark nominations. The Statement of Significance applies to the following California Historical Landmarks, updating their names and historic contexts. Each meets the requirements of California PRC 5024.1(2) regarding review of state historical landmarks preceding #770, and the criteria necessary for listing as California Historical Landmarks. Because these landmarks indicate sites with no extant -
Rancho Corral De Tierra- Palomares
Rancho Corral de Tierra- Palomares Biological Report & Study Compilation July, 2001 Peninsula Open Space Trust Rancho Corral de Tierra-Palomares Biological Report Contents I. Overview & Summary Biological Report Introduction 1 Physical Description 2 Landscape History 3 Geographic Location 6 Parcel Description & Topography 7 Geology and Soils 9 Climate 9 Current Biological Status Summary Biological Importance 10 Beyond the Borders 11 Unique Biological Resources Plant Communities 12 Special Status Plants 13 Animal Communities 14 Special Status Animals 15 II. Biological Description of Rancho Corral de Tierra Methodology 16 Unique Biological Communities 19 Special Status Species Key 22 Plants 23 Reptiles 30 Birds 31 Amphibians 32 Invertebrates 33 Mammals 35 Fish 35 Watershed Delineations & Resources 37 Martini creek watershed 38 Daffodil Valley drainage 41 Farallone drainage 42 Montara creek watershed 44 Sunshine Valley drainage 46 San Vicente creek watershed 47 Denniston creek watershed 50 Other watersheds and drainages 53 Alien and Invasive Species 54 List of Identified Biological Reports & Sources 58 Rancho Corral de Tierra-Palomares I. Overview As the morning mist clears along Hwy. 1, residents who commute daily and first-time travelers experience wonder as the breathtaking views are revealed around the last curve and rocky outcropping that begin the descent into Montara from Devil’s Slide. Mountain cliffs meet crashing waves as vistas of sea and mountains whiz by. Most coastside visitors, blissfully unaware of the efforts to preserve such beauty stretching along the Pacific Coast, lack an identification and understanding of this special area and the flora and fauna it supports. To enjoy and appreciate its stunning views are enough without delving into the past and its legacy. -
Santa Cruz County San Mateo County
Santa Cruz County San Mateo County COMMUNITY WILDFIRE PROTECTION PLAN Prepared by: CALFIRE, San Mateo — Santa Cruz Unit The Resource Conservation District for San Mateo County and Santa Cruz County Funding provided by a National Fire Plan grant from the U.S. Fish and Wildlife Service through the California Fire Safe Council. M A Y - 2 0 1 0 Table of Contents Executive Summary.............................................................................................................1 Purpose.................................................................................................................................2 Background & Collaboration...............................................................................................3 The Landscape .....................................................................................................................6 The Wildfire Problem ..........................................................................................................8 Fire History Map................................................................................................................10 Prioritizing Projects Across the Landscape .......................................................................11 Reducing Structural Ignitability.........................................................................................12 x Construction Methods............................................................................................13 x Education ...............................................................................................................15 -
Community Wildfire Protection Plan Prepared By
Santa Cruz County San Mateo County COMMUNITY WILDFIRE PROTECTION PLAN Prepared by: CALFIRE, San Mateo — Santa Cruz Unit The Resource Conservation District for San Mateo County and Santa Cruz County Funding provided by a National Fire Plan grant from the U.S. Fish and Wildlife Service through the California Fire Safe Council. APRIL - 2 0 1 8 Table of Contents Executive Summary ............................................................................................................ 1 Purpose ................................................................................................................................ 3 Background & Collaboration ............................................................................................... 4 The Landscape .................................................................................................................... 7 The Wildfire Problem ........................................................................................................10 Fire History Map ............................................................................................................... 13 Prioritizing Projects Across the Landscape .......................................................................14 Reducing Structural Ignitability .........................................................................................16 • Construction Methods ........................................................................................... 17 • Education ............................................................................................................. -
And Mission Blue Butterfly Populations Found at Milagra Ridge and the Mission Blue Butterfly Population at Marin Headlands Are Managed by the GGNRA
San Bruno Elfin Butterfly (Callophrys mossii bayensis) and Mission Blue Butterfly (Icaricia icarioides missionensis) 5-Year Review: Summary and Evaluation Photo by Patrick Kobernus: Adult male mission blue butterfly. Sacramento Fish and Wildlife Field Office U.S. Fish and Wildlife Service Sacramento, California February 2010 5-YEAR REVIEW San Bruno Elfin Butterfly (Callophrys mossii bayensis) and Mission blue butterfly (Icaricia icarioides missionensis) I. GENERAL INFORMATION Purpose of 5-Year Reviews: The U.S. Fish and Wildlife Service (Service) is required by section 4(c)(2) of the Endangered Species Act (Act) to conduct a status review of each listed species at least once every 5 years. The purpose of a 5-year review is to evaluate whether or not the species’ status has changed since it was listed (or since the most recent 5-year review). Based on the 5-year review, we recommend whether the species should be removed from the list of endangered and threatened species, be changed in status from endangered to threatened, or be changed in status from threatened to endangered. Our original listing of a species as endangered or threatened is based on the existence of threats attributable to one or more of the five threat factors described in section 4(a)(1) of the Act, and we must consider these same five factors in any subsequent consideration of reclassification or delisting of a species. In the 5-year review, we consider the best available scientific and commercial data on the species, and focus on new information available since the species was listed or last reviewed. -
Unit Strategic Fire Plan San Mateo
Unit Strategic Fire Plan San Mateo - Santa Cruz Cloverdale VMP - 2010 6/15/2011 Table of Contents SIGNATURE PAGE ................................................................................................................................ 2 EXECUTIVE SUMMARY ........................................................................................................................ 3 SECTION I: UNIT OVERVIEW UNIT DESCRIPTION .................................................................................................................. 4 UNIT PREPAREDNESS AND FIREFIGHTING CAPABILITIES................................................. 8 SECTION II: COLLABORATION DEVELOPMENT TEAM ........................................................................................................... 12 SECTION III: VALUES AT RISK IDENTIFICATION OF ASSETS AT RISK ................................................................................ 15 COMMUNITIES AT RISK ........................................................................................................ 17 SECTION IV: PRE FIRE MANAGEMENT STRATEGIES FIRE PREVENTION ................................................................................................................. 18 ENGINEERING & STRUCTURE IGNITABILITY ............................................................... 19 INFORMATION AND EDUCATION .................................................................................. 22 VEGETATION MANAGEMENT ............................................................................................. -
Southern Santa Cruz Mountains
33 3. Field Trip to Lexington Reservoir and Loma Prieta Peak Area in the Southern Santa Cruz Mountains Trip Highlights: San Andreas Rift Valley, Quaternary faults, Stay in the right lane and exit onto Alma Bridge Road. Follow landslide deposits, Franciscan Complex, serpentinite, stream Alma Bridge Road across Lexington Reservoir Dam and turn terrace deposits, Lomitas Fault, Sargent Fault, Cretaceous fos- right into the boat dock parking area about 0.6 mile (1 km) sils, deep-sea fan deposits, conglomerate from the exit on Highway 17 north. A Santa Clara County Parks day-use parking pass is required to park in the paved lot. This field trip examines faults, landslides, rocks, and The park day use pass is $5. Vehicles can be left here for the geologic features in the vicinity of the San Andreas Fault and day to allow car pooling (the park is patrolled, but as always, other faults in the central Santa Cruz Mountains in the vicinity take valuables with you). of both Lexington Reservoir and Loma Prieta Peak (fig. 3-1). Detailed geologic maps, cross sections, and descriptions The field trip begins at Lexington Reservoir Dam at the boat featuring bedrock geology, faults, and landslide information dock parking area. To get to Lexington Reservoir Dam, take useful for this field-trip area are available on-line at theUSGS Highway 17 south (toward Santa Cruz). Highway 17 enters San Francisco Bay Region Geology website [http://sfgeo. Los Gatos Creek Canyon about 3 miles (5 km) south of the wr.usgs.gov/]. McLaughlin and others (2001) have produced intersection of highways 85 and 17. -
Recent Sediments of the Central California Continental Shelf, Pillar Point to Pigeon Point: Part C -- Interpretation and Summary
University of California Hydraulic Engineering Laboratory Technical Report HEL-2-38 This work was supported by Contract 72-67-C-0015 with the Coastal Engineering Research Center, Corps of Engineers, U.S. Army RECENT SEDIMENTS OF THE CENTRAL. CALIFORNIA CONTINENTAL SHELF PILLAR POINT TO PIGEON POINT PART C INTERPRETATION AND SUMMARY OF RESULTS P. Wilde J. Lee T. Yancey M. Glogozowski Berkeley, Cali fornia October 1973 CONTENTS Page ABSTRACT .......................... INTRODUCTION ....................... REGIONAL SETTING ...................... LOCATION ....................... CLIMATE ....................... ATMOSPHERIC TEMPERATURE. PRECIPITATION. WINDS . OCEANIC ....................... PHYSICAL PROPERTIES OF COASTAL WATERS ...... TIDES ...................... CURRENTS ..................... OPEN OCEAN ................. LONGSHORE ................. PHYSIOGRAPHY AND DRAINAGE ............... BATHYMETRY ...................... PREVIOUS WORK ..................... GEOLOGY ........................ SEDIMENTARY DATA ...................... GRAIN SIZE PROPERTIES ................. MINERALOGY ...................... MINERALOGICAL PROVINCES ................ MINERAL PERCENTAGE DISTRIBUTION ......... GENERIC END MFX4BERS ............... Page PROVENANCE ......................... 5 7 SEDIMENTARY PROVINCES ................. 5 9 DEPOS IT1ONAL HISTORY ................. 6 8 APPENDIX I . ORGANIC CONTENT ................ 71 mFERENCES ......................... 79 FIGURES Numbe r Title .Page 1 INDEX MAP .................... 3 2 GEOSTROPHIC CURRENTS ............... 10