35 The Mesozoic Convergent Margin of Alta and Baja California (Posters)

This session will cover aspects including the structure, petrology, geochronology, and stratigraphy of the Mesozoic convergent margin of North America from Alta California to Baja California Sur.

Friday, 24 April 2026
8:00 AM - 5:30 PM
LMH, 5th Floor Chapel

Participants

• Chair Rafael Almeida
• Chair Joshua Schwartz
• Chair David Kimbrough

Presentations

• 8:00 AM
  Cataclastic Brecciation of Late Cretaceous (~96 Ma) Granites at Monument Hills, Northwestern Sonora: Timing and Tectonic Implications
  Daniela Ponce-Cortés, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo and Alexander Iriondo, Universidad Nacional Autónoma de México, Queretaro, QRO and Kinardo Flores-Castro, Universidad Autónoma del Estado de Hidalgo, Pachuca, Hidalgo
  410809 (Technical Sessions)
• 8:00 AM
  Late Cretaceous–Eocene Cooling and Exhumation of the Peninsular Ranges Batholith (S. CA) Constrained by Apatite U–Pb and (U–Th)/He Analyses
  Madison Bush, University of California, San Diego, CA and Margo Odlum, University of California, San Diego, CA and Peter Haproff, UNC Wilmington, Wilmington, NC and Tatiana Sihpol, University of California, San Diego, CA
  410857 (Technical Sessions)
• 8:00 AM
  Petrogenesis of San Marcos dykes (Baja California, Mexico): an insight into magmatic chambers of the Peninsular Range Batholith
  Reneé González-Guzmán, CICESE, Ensenada, Baja California and Carlos Epitacio Almanza-García, CICESE, Ensenada, Baja California and Bodo Weber, CICESE, Ensenada, Baja California and Manuel Contreras-López, UNAM, Ciudad Universitaria, Cd. de México and Luigi Solari, UNAM, Juriquilla, Querétaro and Carlos Ortega-Obregón, UNAM, Juriquilla, Querétaro and Dirk Frei, University of the Western Cape, Bellville, Cape Town
  410866 (Technical Sessions)
• 8:00 AM
  Accretion of Mesozoic Blueschist-Facies Assemblages on Cedros, San Benitos, and Santa Margarita Islands, West-Central Baja Mexico
  Emily Dektar, Lettis Consultants International, Sacramento, CA and Alan Chapman, Macalester College, St. Paul, MN and Evan Unruh-Friesen, University of Michigan, Ann Arbor, Michigan
  410914 (Technical Sessions)
• 8:00 AM
  Structural and Stratigraphic Architecture of the Magdalena Forearc Basin (Baja California Sur): Unconformities and Waning Contraction during Late-Stage Farallon Subduction
  Moises Gonzalez, CICESE - Departamento de Ciencias de la Tierra, Ensenada, Mexico and Mario Gonzalez-Escobar, CICESE - Departamento de Ciencias de la Tierra, Ensenada, Baja California and Luca Ferrari, UNAM - Campus Juriquilla, Centro de Geociencias, Juriquilla, QRO
  410967 (Technical Sessions)
• 8:00 AM
  Petrology of the Early Cretaceous San Julián batholith: implications for the evolution of the southern Peninsular Ranges Batholith, Baja California
  Nina Ávila-Ortiz, CICESE, Ensenada, Baja California and Luis Delgado-Argote, CICESE, Ensenada, Baja California and Manuel Contreras-López, UNAM, México City and Xóchitl Torres-Carrillo, UAS, Culiacán, Sinaloa and Bodo Weber, CICESE, Ensenada, Baja California and Marco Pérez, CICESE, Ensenada, Baja California and Doris Gómez-Álvarez, CICESE, Ensenada, Baja California and Raymundo Martínez-Serrano, UNAM, Mexico City
  411006 (Technical Sessions)
• 8:00 AM
  Detrital Zircon Provenance of the Vizcaino Peninsula Jura-Cretaceous Forearc Basin, Baja California, Mexico
  David Kimbrough, San Diego State University, San Diego, CA and Marty Grove, Stanford University, Stanford, California and Douglas Smith, CSU Monterey Bay, Monterey Bay, California and Thomas Moore, United Sates Geological Survey and Chris Kohel, United States Geological Survey, San Diego, California and J. Mahoney, Eau Claire, Wisconsin
  411059 (Technical Sessions)