Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico

Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico

Bibliographic Details
Main Author: Dowe, David S.
Language:English
Published: Ohio University / OhioLINK 2004
Subjects:
Geology
Granjeno Schist
Mexico
Deformation
Metamorphism
Rheic Ocean
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1089910191
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou10899101912021-08-03T05:43:07Z Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico Dowe, David S. Geology Granjeno Schist Mexico Deformation Metamorphism Rheic Ocean <p>Exposed in the core of a NNW-trending frontal anticline of the Laramide fold-thrust belt of northeastern Mexico, the Paleozoic Granjeno Schist comprises a polydeformed assemblage of metasedimentary and metavolcaniclastic rocks and serpentinized mafic-ultramafic units. Deformation of the Granjeno Schist has produced at least four sets of structures. The earliest deformation (D <sub>1</sub> ) predates emplacement of a leucogranite at 351±54 Ma and may record obduction of this oceanic unit. Subsequent deformations (D <sub>2−</sub> D <sub>4</sub> ) record the tectonic juxtapositioning of the Granjeno Schist against the Grenville-aged Novillo Gneiss by NNW-directed dextral shear under conditions of decreasing temperature. Mica cooling ages of 313±13 Ma and 300±4 Ma are considered to date the onset of dextral motion, which continued into the Permian. These events are linked to the Late Paleozoic closing of the Rheic Ocean.</p> 2004-07-20 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1089910191 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1089910191 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Geology
Granjeno Schist
Mexico
Deformation
Metamorphism
Rheic Ocean
spellingShingle Geology
Granjeno Schist
Mexico
Deformation
Metamorphism
Rheic Ocean
Dowe, David S.
Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
author Dowe, David S.
author_facet Dowe, David S.
author_sort Dowe, David S.
title Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
title_short Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
title_full Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
title_fullStr Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
title_full_unstemmed Deformational History of the Granjeno Schist Near Ciudad Victoria, Mexico
title_sort deformational history of the granjeno schist near ciudad victoria, mexico
publisher Ohio University / OhioLINK
publishDate 2004
url http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1089910191
work_keys_str_mv AT dowedavids deformationalhistoryofthegranjenoschistnearciudadvictoriamexico
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