5 The southern margin of the North American cordillera through time

This session deals with the geologic evolution of the southeastern Cordillera of the North American Plate, its role during ancient orogenic cycles, opening of the Gulf of Mexico, and its interaction with the Caribbean Plate.

Wednesday, 22 April 2026
8:00 AM - 12:00 PM
LMH, Meeting Room

Participants

• Chair Bodo Weber
• Chair Elisa Fitz-Diaz

Presentations

• 8:10 AM
  Late Paleozoic Alleghanian Amalgamation of Western Pangea
  James Pindell, Tectonic Analysis Ltd., Stoughton, West Sussex and Robert Erlich, Cayo Energy, Houston, Texas and Wendy Hale-Erlich, Cayo Energy, Houston, Texas and John Dewey, University College, Oxford, Oxford, Oxfordshire
  410823 (Technical Sessions)
• 8:30 AM
  The Mesozoic Breakup of Western Pangea: Triassic Rifting, Role of Paleo-dynamic Topography, and North Oaxaca Transfer
  James Pindell, Tectonic Analysis Ltd., Stoughton, West Sussex and Teunis Heyn, Independent, Houston, Texas
  410824 (Technical Sessions)
• 8:50 AM
  New Timing Constraints on Mylonitic Deformation in the Sierra de Juárez Complex, Oaxaca: Implications for Mesozoic Tectonics in Southern Mexico
  Eduardo Monreal Roque, CICESE, Ensenada, Baja California and Bodo Weber, CICESE, Ensenada, Baja California and Juan Quintana Delgado, CICESE, Ensenada, Baja California and Lucie Tajcmanova, Universitaet Heidelberg, Heidelberg, Baden-Württemberg and Frederic Couffignal, Helmholtz Centre for Geosciences, Postdam, Brandenburg and Michael Wiedenbeck, Helmholtz Centre for Geosciences, Postdam, Brandenburg and Martin Kutzschbach, Goethe-Universitaet Frankfurt, Frankfurt, Hesse and Uwe Martens, UNAM Centro de Geociencias, Juriquilla, Querétaro
  410778 (Technical Sessions)
• 9:10 AM
  Lithospheric boundaries of southernmost Mexico and the connection between the Mexican fold-thrust belt and the Chiapas orogen.
  Elisa Fitz-Díaz, UNAM, CDMX, DF and Rogelio Hernández-Vergara, UAGro, Taxco, Guerrero and Fernando Corbo-Camargo, UNAM, Querétaro, Querétaro and Nadia Jazmín Flores Martínez, UNAM, CDMX, DF
  410985 (Technical Sessions)
• 9:30 AM
  Strike-slip translation of southern Mexico’s Pacific margin into the Guatemala Suture Zone
  Kennet Flores, University of North Carolina, Chapel Hill, NC and Anna Strickland, University of North Carolina, Chapel Hill, NC
  410980 (Technical Sessions)
• 10:05 AM
  Petrogenesis of the ~1.47–1.38 Ga intracratonic magmatism emplaced into the Paleoproterozoic provinces of the southwestern corner of Laurentia, northwestern Mexico
  Yuly Tatiana Valencia Morales, Universidad Nacional Autónoma de México, Mexico, Ciudad de Mexico and Alexander Iriondo, Universidad Nacional Autónoma de México, Juriquilla, Querétaro and Bodo Weber, Centro de Investigación Científica y de Educación Superior de Ensenada, Baja California , Ensenada, Baja California and Erik Castañeda, Universidad Nacional Autónoma de México, Juriquilla, Querétaro and Carlos Ortega-Obregón, Universidad Nacional Autónoma de México, Juriquilla, Queretaro
  410912 (Technical Sessions)
• 10:25 AM
  Ediacaran-Cambrian passive margin in Nevada and California
  Gregory Retallack, University of Oregon, Eugene, OR
  410745 (Technical Sessions)
• 10:45 AM
  Detrital Zircon Provenance Study in Metasedimentary Rocks from the Cuicateco Terrane (Oaxaca, Mexico) – From the Opening of the Iapetus to the Closure of the Rheic Ocean.
  Juan Quintana-Delgado, CICESE, Departmento de Geologia, Ensenada, Baja California and Eduardo Monreal-Roque, CICESE, Ensenada, Baja California and Bodo Weber, CICESE, Geology Department, Ensenada, Baja California and Dirk Frei, UWC, Stellenbosch, Western Cape and Andrew Kylander-Clark, UC Santa Barbara, Santa Barbara, CA
  410804 (Technical Sessions)
• 11:05 AM
  The Neoproterozoic Record of Crustal Extension and Rifting in Eastern and Southern Mexico – Pinpoints in Support of an Amazonia-Oaxaquia-Baltica Connection
  Bodo Weber, CICESE, Geology Department, Ensenada, Baja California, Baja California and Juan Andrés Quintana-Delgado, CICESE, Ensenada, Baja California and Eduardo Monreal-Roque, CICESE, Ensenada, Baja California and Dirk Frei, University of the Western Cape, Belville, Western Cape
  410734 (Technical Sessions)