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The Late Cretaceous fold-thrust belt in the Peña de Bernal— Tamazunchale area and its possible relationship to the accretion of the Guerrero Terrane

By
Michelangelo Martini
Michelangelo Martini
Instituto de Geología, Universidad Nacional Autónoma de México, México D.F. 04510, México
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Elisa Fitz
Elisa Fitz
Earth and Environmental Science, University of Michigan, Ann Arbor, Michigan 48108, USA
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Luigi Solari
Luigi Solari
Centro de Geociencias, Universidad Nacional Autónoma de México, Campus Juriquilla, 76230, Querétaro, México
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Antoni Camprubi
Antoni Camprubi
Instituto de Geología, Universidad Nacional Autónoma de México, México D.F. 04510, México
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Peter J. Hudleston
Peter J. Hudleston
Department of Geology and Geophysics, University of Minnesota, Minneapolis, Minnesota 55455, USA
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Timothy F. Lawton
Timothy F. Lawton
Department of Geological Sciences, New Mexico State University, Las Cruces, New Mexico 88003, USA
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Gustavo Tolson
Gustavo Tolson
Instituto de Geología, Universidad Nacional Autónoma de México, México D.F. 04510, México
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Elena Centeno-García
Elena Centeno-García
Instituto de Geología, Universidad Nacional Autónoma de México, México D.F. 04510, México
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Published:
January 01, 2012

Abstract

The continental interior of Mexico is characterized by a Late Cretaceous prominent fold-thrust belt that shows characteristics of an eastward-tapering orogenic wedge. According to structural data and geothermometry of the deformation, this wedge is the result of horizontal stresses directed from the west (Pacific domain). The orogenic wedge is bounded to the west by the Guerrero Terrane, which is the second largest juvenile terrane accreted to the North American Cordillera. The possible linkage between the accretion of the Guerrero Terrane and the regional shortening in the Mexican interior is examined in detail in the region comprised between the Sierra de Guanajuato and the Peña de Bernal—Tamazunchale areas. In order to test the accretion hypothesis, we present key stratigraphic, structural, and geochronologic data from the Mexican Cordillera in central Mexico, and discuss the problems that exist in connecting the accretion of the Guerrero Terrane to the orogenic deformation of the Mexican continental interior.

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Contents

GSA Field Guide

The Southern Cordillera and Beyond

José Jorge Aranda-Gómez
José Jorge Aranda-Gómez
Universidad Nacional Autónoma de México Centro de Geociencias Campus Juriquilla Querétaro Qro. 76230 México
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Gustavo Tolson
Gustavo Tolson
Instituto de Geología Universidad Nacional Autónoma de México México D.F. 04510 México
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Roberto S. Molina-Garza
Roberto S. Molina-Garza
Universidad Nacional Autónoma de México Centro de Geociencias Campus Juriquilla Querétaro Qro. 76230 México
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Geological Society of America
Volume
25
ISBN electronic:
9780813756257
Publication date:
January 01, 2012

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