Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain

[EN]Slates are common metasedimentary rocks in the Iberian Peninsula, ranging in deposition age from Proterozoic to Ordovician. Spain is currently the primary producer of high-quality slate products. The excellent cleavage is related to microstructures with very strong preferred orientation of white...

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Autores: Wenk, H.-R., Huang, J., Devoe, M., Gómez Barreiro, Juan, Vasin, R., Ren, Y., Barrios Sánchez, Santos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/166873
Acceso en línea:http://hdl.handle.net/10366/166873
Access Level:acceso abierto
Palabra clave:Slate
Microstructure
Crystallographic and shape preferred orientation
Seismic anisotropy
Northern Spain
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spelling Crystallographic and shape preferred orientation producing anisotropy in slates from Northern SpainWenk, H.-R.Huang, J.Devoe, M.Gómez Barreiro, JuanVasin, R.Ren, Y.Barrios Sánchez, SantosSlateMicrostructureCrystallographic and shape preferred orientationSeismic anisotropyNorthern Spain[EN]Slates are common metasedimentary rocks in the Iberian Peninsula, ranging in deposition age from Proterozoic to Ordovician. Spain is currently the primary producer of high-quality slate products. The excellent cleavage is related to microstructures with very strong preferred orientation of white mica and chlorite. In this study we explore preferred orientation of eleven slates and one phyllite of different composition and metamorphic grade from Northern Spain with high energy synchrotron X-ray diffraction and study microstructures with scanning electron microscopy. While phyllosilicates display high crystallographic and shape preferred orientation, quartz, with also highly flattened grains, has in most samples a random crystallographic orientation. The microstructural and texture data are used to model anisotropic seismic properties with a self-consistent method and to explore the influence of crystal shapes on elastic anisotropy. Anisotropy for these slates is very high compared with gneiss and shale and, due to its prevalence, slate anisotropy contributes significantly to seismic anisotropy in the upper crust.ELSEVIER202520252022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/166873reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésDE-AC02-06CH11357EAR 2154351 and 2054951DE-FG02-05ER156372016YFC0303902-04MCIN/AEI/10.13039/ 501100011033PID2020-117332 GB-C21info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1668732026-06-07T06:28:51Z
dc.title.none.fl_str_mv Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
title Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
spellingShingle Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
Wenk, H.-R.
Slate
Microstructure
Crystallographic and shape preferred orientation
Seismic anisotropy
Northern Spain
title_short Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
title_full Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
title_fullStr Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
title_full_unstemmed Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
title_sort Crystallographic and shape preferred orientation producing anisotropy in slates from Northern Spain
dc.creator.none.fl_str_mv Wenk, H.-R.
Huang, J.
Devoe, M.
Gómez Barreiro, Juan
Vasin, R.
Ren, Y.
Barrios Sánchez, Santos
author Wenk, H.-R.
author_facet Wenk, H.-R.
Huang, J.
Devoe, M.
Gómez Barreiro, Juan
Vasin, R.
Ren, Y.
Barrios Sánchez, Santos
author_role author
author2 Huang, J.
Devoe, M.
Gómez Barreiro, Juan
Vasin, R.
Ren, Y.
Barrios Sánchez, Santos
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Slate
Microstructure
Crystallographic and shape preferred orientation
Seismic anisotropy
Northern Spain
topic Slate
Microstructure
Crystallographic and shape preferred orientation
Seismic anisotropy
Northern Spain
description [EN]Slates are common metasedimentary rocks in the Iberian Peninsula, ranging in deposition age from Proterozoic to Ordovician. Spain is currently the primary producer of high-quality slate products. The excellent cleavage is related to microstructures with very strong preferred orientation of white mica and chlorite. In this study we explore preferred orientation of eleven slates and one phyllite of different composition and metamorphic grade from Northern Spain with high energy synchrotron X-ray diffraction and study microstructures with scanning electron microscopy. While phyllosilicates display high crystallographic and shape preferred orientation, quartz, with also highly flattened grains, has in most samples a random crystallographic orientation. The microstructural and texture data are used to model anisotropic seismic properties with a self-consistent method and to explore the influence of crystal shapes on elastic anisotropy. Anisotropy for these slates is very high compared with gneiss and shale and, due to its prevalence, slate anisotropy contributes significantly to seismic anisotropy in the upper crust.
publishDate 2022
dc.date.none.fl_str_mv 2022
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/166873
url http://hdl.handle.net/10366/166873
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv DE-AC02-06CH11357
EAR 2154351 and 2054951
DE-FG02-05ER15637
2016YFC0303902-04
MCIN/AEI/10.13039/ 501100011033
PID2020-117332 GB-C21
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv ELSEVIER
publisher.none.fl_str_mv ELSEVIER
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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