C. Geology, Soils, and Seismicity
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USGS Open-File Report 96-252, Geologic Explanation Pamphlet
Preliminary geologic map emphasizing bedrock formations in Alameda County, California: A digital database by R.W. Graymer, D.L. Jones, and E.E. Brabb U.S. Geological Survey Open-File Report 96-252 Geologic Explanation Introduction This map database represents the integration of previously published and unpublished maps by several workers (see Sources of Data) and thousands of man-hours of new geologic mapping and field checking by the authors. The data are released in a preliminary digital form to provide an opportunity for regional planners, local, state, and federal agencies, teachers, consultants, and others interested in geologic data to have the new data long before a traditional paper map is published. The authors currently plan to produce a second version of the geologic map of Alameda County that would include subdivided Quaternary units and enhanced stratigraphic description and nomenclature, both as a digital product and as a traditional paper map. The timing of release of these products, and indeed whether they will be produced at all, depends on a variety of factors, including funding, outside author control. Stratigraphy Lithologic associations in Alameda County are divided into nine assemblages; I, II, and V - XI (Assemblages III and IV occur only in Contra Costa County). As defined in Graymer, Jones, and Brabb (1994), assemblages are large, fault - bounded blocks that contain a unique stratigraphic sequence. The stratigraphic sequence differs from that of neighboring assemblages by containing different rock units (e.g. the freshwater limestone (Tlp) in Assemblage VIII is missing from the other Assemblages), or by different stratigraphic relationship among similar rock units (e.g. -
Multiple Landslide-Hazard Scenarios Modeled for the Oakland-Berkeley Area, Northern California
Multiple Landslide-Hazard Scenarios Modeled for the Oakland-Berkeley Area, Northern California Scientific Investigations Report 2007–5196 U.S. Department of the Interior U.S. Geological Survey Multiple Landslide-Hazard Scenarios Modeled for the Oakland-Berkeley Area, Northern California By Richard J. Pike and Russell W. Graymer, Editors Scientific Investigations Report 2007–5196 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior DIRK KEMPTHORNE, Secretary U.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Reston, Virginia: 2008 This report and any updates to it are available online at: http://pubs.usgs.gov/sir/2007/5196/ For additional information write to: U.S. Geological Survey Box 25046, Mail Stop 421, Denver Federal Center Denver, CO 80225-0046 Additional USGS publications can be found at: http://www.usgs.gov/pubprod/ For more information about the USGS and its products: Telephone: 1–888–ASK–USGS (1-888-275-8747) World Wide Web: http://www.usgs.gov/ 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. Although this report is in the public domain, it may contain copyrighted materials that are noted in the text. Permission to reproduce those items must be secured from the individual copyright owners. Cataloging-in-Publication data are on file with the Library of Congress Produced in the Western Region, Menlo Park, California Manuscript approved for publication, 9/7/07 Text and Plates edited by Taryn A. Lindquist Layout and design by Stephen L. -
Paleolandslide Investigation Building 25 Lawrence Berkeley National Laboratory Berkeley, California
Paleolandslide Investigation Building 25 Lawrence Berkeley National Laboratory Berkeley, California Submitted to: Mr. Jerome Ohearn Project Manager, Facilities Division Lawrence Berkeley National Laboratory One Cyclotron Road, MS 76-225 Berkeley, CA 94720 [email protected] Prepared by: William Lettis & Associates, Inc. 1777 Botelho Drive, Suite 262 Walnut Creek, CA 94596 August 31, 2009 SIGNATURE PAGE Paleolandslide Investigation, Building 25, Lawrence Berkeley National Laboratory, Berkeley, California William Lettis & Associates, Inc. Project No. 2072.001 This investigation and report were prepared by the following qualified William Lettis & Associates, Inc. personnel: ______________________________________ ___August 31, 2009___ John N. Baldwin, C.E.G. 2167 Date Principal Geologist Project Manager 2072.001 Paleolandslide Study i 8/31/09 TABLE OF CONTENTS 1.0 Introduction.................................................................................................................. 1 1.1 Project Description................................................................................................... 1 1.2 Purpose..................................................................................................................... 2 1.3 Previous AKA/WLA Investigations ........................................................................ 2 1.4 Limitations ............................................................................................................... 3 2.0 Scope of Work ............................................................................................................ -
Geology of Sonoma County Guidebook.Pdf
I l ASSOCIATION OF ENGINEERING GEOLOGISTS \ San Francisco Section 1 I 1 AEG San Francisco Section Field Trip Geology and Tectonics of the San Francisco North Bay Area Saturday June 14, 2008 Leaders: James Allen, CSU East Bay, Earth and Environmental Sciences Peter Holland, Vector Engineering James Wilen Jr., BACE Geotechnical Guidebook by: James Allen Peter Holland James Wilen Jr. l l TABLE OF CONTENTS (Page numbers exclude figure pages) Directions & Road Log. .. I Overview of Stops... ........................ .. ........................... .......................................... I Introduction. .............................................. ................................................ ...... ..... 2 Regional Geology. 3 Franciscan Complex ................................................................................... 3 Great Valley Group.. ...................... .................... ........................................ 3 Salinian Block at Pt. Reyes ........................................................................... 4 Tertiary Rocks East of the San Andreas Fault. ..................................................... 4 Monterey Group ....................................................................................... 4 San Pablo Group ........ ........................................................ ........................ 4 Orinda Formation..................................................................................... 4 Moraga Formation ..............................................................................