Problems of Delineation of the Rio Grande Rift into the Chihuahua Tectonic Belt of Northern Mexico

  1. Robert E. Riecker
  1. John C. Gries

Published Online: 21 MAR 2013

DOI: 10.1029/SP014p0107

Rio Grande Rift: Tectonics and Magmatism

Rio Grande Rift: Tectonics and Magmatism

How to Cite

Gries, J. C. (1979) Problems of Delineation of the Rio Grande Rift into the Chihuahua Tectonic Belt of Northern Mexico, in Rio Grande Rift: Tectonics and Magmatism (ed R. E. Riecker), American Geophysical Union, Washington, D. C.. doi: 10.1029/SP014p0107

Author Information

  1. Department of Geology, Wichita State University, Wichita, Kansas 67208

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1979

ISBN Information

Print ISBN: 9780875902142

Online ISBN: 9781118664988

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Keywords:

  • Chihuahua tectonic belt;
  • Evaporites;
  • Gravity data;
  • Halite behavior;
  • Heat flow;
  • Volcanic activity

Summary

The possible extension of the Rio Grande Rift into northern Mexico requires the imposition of rift structural features over two other varied types of tectonic styles. Complex thrust faulting of a thick sequence of Cretaceous sediments overlies mobile Jurassic evaporite sequences. High angle mid-Tertiary faulting is subparallel to the Laramide thrusting and parallel the rift structures Just to the north. Evidence for rift extension into northern Mexico includes Quaternary faulting on the northwest and eastern boundaries of the evaporite basin. Thermal studies also indicate anomalously high subsurface temperatures south into northern Mexico. Because experimental evidence indicates plastic behavior of halite beginning at about 300°c, it is suggested that high angle displacements in sub-evaporite rocks do not carry through extensively to the surface because of large scale flowage of the evaporites. Therefore, surface structural features common to the rift farther to the north will not be found in eastern Chihuahua because they are superposed over complex Laramide and Mid-Tertiary structures and will be subdued by evaporite flowage in the subsurface.