Peninsular Ranges Batholith, Baja California and Southern California edited by Douglas M. Morton U.S. Geological Survey and Department of Earth Sciences University of California Riverside, California 92521 USA Fred K. Miller U.S. Geological Survey 904 West Riverside Ave. Spokane, Washington 99201 USA Memoir 211 3300 Penrose Place, P.O. Box 9140 Boulder, Colorado 80301-9140, USA 2014 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 Copyright © 2014, The Geological Society of America (GSA), Inc. All rights reserved. Copyright is not claimed on content prepared wholly by U.S. government employees within the scope of their employment. 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GSA Books Science Editors: Kent Condie and F. Edwin Harvey Library of Congress Cataloging-in-Publication Data Peninsular Ranges batholith, Baja California and southern California / edited by Douglas M. Morton, Fred K. Miller. pages cm — (Memoir / Geological Society of America ; 211) Includes bibliographical references. ISBN 978-0-8137-1211-6 (cloth) 1. Batholiths—California, Southern. 2. Geology—California, Southern. 3. Baja California (Mexico: Peninsula) I. Morton, Douglas M. II. Miller, Fred K. III. Series: Memoir (Geological Society of America) ; 211. QE75.P46 2014 557.2’2—dc23 2013044872 Cover: Geologic map of the Ramona plutonic complex, Peninsular Ranges batholith, southern California (from V.R. Todd et al., 2006, Geologic Map of the Ramona 7.5-Minute Quadrangle, San Diego, California: A Digital Database: Version 1: California Geological Survey Preliminary Geologic Map, scale 1:24,000). See V.R. Todd et al., Chapter 17, this volume, doi:10.1130/2014.1211(17), for legend and more information. 10 9 8 7 6 5 4 3 2 1 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 This Memoir is dedicated to those Peninsular Ranges batholith researchers on whose shoulders we stand, and especially to the four chapter authors who are no longer with us— Alex Baird, Barney Berger, Gordon Gastil, and Stirling Shaw. Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 Contents Foreword . ix Douglas M. Morton 1. Geophysical framework of the Peninsular Ranges batholith—Implications for tectonic evolution and neotectonics . 1 V.E. Langenheim, R.C. Jachens, and C. Aiken 2. Age and isotopic systematics of Cretaceous borehole and surface samples from the greater Los Angeles Basin region: Implications for the types of crust that might underlie Los Angeles and their distribution along late Cenozoic fault systems . .21 Wayne R. Premo, Douglas M. Morton, and Ronald W. Kistler 3. Framework and petrogenesis of the northern Peninsular Ranges batholith, southern California . .61 D.M. Morton, F.K. Miller, R.W. Kistler, W.R. Premo, C-T.A. Lee, V.E. Langenheim, J.L. Wooden, L.W. Snee, B.L. Clausen, and P. Cossette 4. U-Pb zircon geochronology of plutonism in the northern Peninsular Ranges batholith, southern California: Implications for the Late Cretaceous tectonic evolution of southern California . .145 Wayne R. Premo, Douglas M. Morton, Joseph L. Wooden, and C. Mark Fanning 5. Potassium-argon cooling ages in the northern part of the Peninsular Ranges batholith and offsets on the Elsinore and San Jacinto fault zones . 181 F.K. Miller, D.M. Morton, and W.R. Premo 6. Thermochronology of Cretaceous batholithic rocks in the northern Peninsular Ranges batholith, southern California: Implications for the Late Cretaceous tectonic evolution of southern California . .199 Daniel P. Miggins, Wayne R. Premo, Lawrence W. Snee, Ross Yeoman, Nancy D. Naeser, Charles W. Naeser, and Douglas M. Morton 7. Pb-Sr-Nd-O isotopic characterization of Mesozoic rocks throughout the northern end of the Peninsular Ranges batholith: Isotopic evidence for the magmatic evolution of oceanic arc–continental margin accretion during the Late Cretaceous of southern California . 263 Ronald W. Kistler, Joseph L. Wooden, Wayne R. Premo, and Douglas M. Morton 8. Low-initial-Sr felsic plutons of the northwestern Peninsular Ranges batholith, southern California, and the role of mafic-felsic magma mixing in continental crust formation . 317 Benjamin L. Clausen, Douglas M. Morton, Ronald W. Kistler, and Cin-Ty A. Lee v Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 vi Contents 9. Santiago Peak volcanics: Early Cretaceous arc volcanism of the western Peninsular Ranges batholith, southern California . 345 Charles T. Herzig and David L. Kimbrough 10. Petrology and chemistry of the Green Acres gabbro complex near Winchester, Riverside County, California . 365 Byron R. Berger 11. Lakeview Mountains pluton: A dynamically emplaced pluton, northern Peninsular Ranges batholith, southern California . 395 D.M. Morton, R.W. Kistler, F.K. Miller, V.E. Langenheim, W.R. Premo, J.L. Wooden, P.M. Cossette, and R.C. Jachens 12. A study of sampling requirements to determine modal variability within the Lakeview Mountains pluton, northern Peninsular Ranges batholith, southern California . 421 A.K. Baird, W.B. Wadsworth, and D.M. Morton 13. Subduction transitioning from beneath oceanic crust to beneath continental crust, northern Peninsular Ranges batholith: Structural and thermal imprint on prebatholithic rocks . 433 Douglas M. Morton, Rachel M. Alvarez, Alison Alcott, Fred K. Miller, and Pamela M. Cossette 14. SHRIMP-RG U-Pb ages of provenance and metamorphism from detrital zircon populations and Pb-Sr-Nd signatures of prebatholithic metasedimentary rocks at Searl Ridge, northern Peninsular Ranges batholith, southern California: Implications for their age, origin, and tectonic setting . 449 Wayne R. Premo and Douglas M. Morton 15. A west-to-east geologic transect across the Peninsular Ranges batholith, San Diego County, California: Zircon 176Hf/177Hf evidence for the mixing of crustal- and mantle-derived magmas, and comparisons with the Sierra Nevada batholith . .499 Stirling E. Shaw, Victoria R. Todd, David L. Kimbrough, and Norman J. Pearson 16. Mineralogy and physical properties of plutonic and metamorphic rocks of the Peninsular Ranges batholith, San Diego County, California . 537 Victoria R. Todd, Stirling E. Shaw, and Victoria E. Langenheim 17. The zoned Ramona plutonic complex: An Early Cretaceous mid- to upper-crustal intrusive sequence, Peninsular Ranges batholith, southern California . 583 Victoria R. Todd, Janis L. Hernandez, and Lawrence L. Busch 18. The Rattlesnake Valley and Oriflamme Canyon plutons: Key temporal markers in the Jurassic and Cretaceous development of the transition zone of the Peninsular Ranges batholith . 609 Cassady Bethel-Thompson, Jon Sainsbury, Jason W. Ricketts, and Gary H. Girty 19. Upper Jurassic Peñasquitos Formation—Forearc basin western wall rock of the Peninsular Ranges batholith . 625 David L. Kimbrough, Patrick L. Abbott, Duane C. Balch, Sarah Hosken Bartling, Marty Grove, J. Brian Mahoney, and Robert F. Donohue 20. Mesozoic tectonic evolution of the southern Peninsular Ranges batholith, Baja California, Mexico: Long-lived history of a collisional segment in the Mesozoic Cordilleran arc . 645 K.L. Schmidt, P.H. Wetmore, H. Alsleben, and S.R. Paterson Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/955332/mwr211-00.pdf by guest on 29 September 2021 Contents vii 21. Tectonic implications of postcontractional magmatism of the Alisitos arc segment of the Peninsular Ranges, Baja California, Mexico . 669 Paul H. Wetmore, Scott S. Hughes, Ciprian Stremtan, Mihai N. Ducea, and Helge Alsleben