Hercynian Metamorphism in the Catalonian Coastal Ranges

Paleozoic rocks in the Catalonian Coastal Ranges are in their largestpart affectedby alow-tovery-low grade Hercynian metamorphism. Amphibolite facies conditions are only found in restricted areas such as the southwestern part of the Guilleries massif where upper amphibolite facies conditions are rea...

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Authors: Sebastián Castellanos, Alfredo, Reche Estrada, Joan, Durán Gilabert, Hortensia
Format: article
Status:Published version
Publication Date:1990
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/32687
Online Access:https://hdl.handle.net/2445/32687
Access Level:Open access
Keyword:Metamorfisme
Paleozoic
Serralada Litoral Catalana
Metamorphism (Geology)
Catalan Coastal Range (Catalonia)
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spelling Hercynian Metamorphism in the Catalonian Coastal RangesSebastián Castellanos, AlfredoReche Estrada, JoanDurán Gilabert, HortensiaMetamorfismePaleozoicSerralada Litoral CatalanaMetamorphism (Geology)PaleozoicCatalan Coastal Range (Catalonia)Paleozoic rocks in the Catalonian Coastal Ranges are in their largestpart affectedby alow-tovery-low grade Hercynian metamorphism. Amphibolite facies conditions are only found in restricted areas such as the southwestern part of the Guilleries massif where upper amphibolite facies conditions are reached. Metamorphic grade increases from top to bottom of the Paleozoic stratigraphic sequence and the metamorphic peak is diachronous, being progressively older in the lower grade metamorphic zones. The isograd pattern, mineral assemblages, mineral chemistry and preserved reaction textures are consistent with a low pressure metamorphism possibly evolving from a previous Barrovian type event. The metamorphic climax in the high grade zone was reached after the seconddeformational phase. Calculatedpeak P-Tconditions are 620-640 OC and around 3.5 Kb . A latter episode of decompression from the maximum conditions to 1-2 Kb, with an associated temperature decrease to 530-550 OC, is recognized. The intrusion of late Hercynian granitoids produced contact metamorphic aureoles where the pyroxene-hornfels facies is locally reached.Universitat de Barcelona (UB). Institut de Cièncias de la Terra Jaume Almera (ICTJA)2012201219902012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion8 p.application/pdfhttps://hdl.handle.net/2445/32687Articles publicats en revistes (Educació Lingüística, Científica i Matemàtica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: http://www.raco.cat/index.php/ActaGeologica/article/view/75366Acta Geologica Hispanica, 1990, vol. 25, num. 1/2, p. 31-38(c) Sebastián Castellanos, Alfredo et al., 1990info:eu-repo/semantics/openAccessoai:recercat.cat:2445/326872026-05-29T05:05:01Z
dc.title.none.fl_str_mv Hercynian Metamorphism in the Catalonian Coastal Ranges
title Hercynian Metamorphism in the Catalonian Coastal Ranges
spellingShingle Hercynian Metamorphism in the Catalonian Coastal Ranges
Sebastián Castellanos, Alfredo
Metamorfisme
Paleozoic
Serralada Litoral Catalana
Metamorphism (Geology)
Paleozoic
Catalan Coastal Range (Catalonia)
title_short Hercynian Metamorphism in the Catalonian Coastal Ranges
title_full Hercynian Metamorphism in the Catalonian Coastal Ranges
title_fullStr Hercynian Metamorphism in the Catalonian Coastal Ranges
title_full_unstemmed Hercynian Metamorphism in the Catalonian Coastal Ranges
title_sort Hercynian Metamorphism in the Catalonian Coastal Ranges
dc.creator.none.fl_str_mv Sebastián Castellanos, Alfredo
Reche Estrada, Joan
Durán Gilabert, Hortensia
author Sebastián Castellanos, Alfredo
author_facet Sebastián Castellanos, Alfredo
Reche Estrada, Joan
Durán Gilabert, Hortensia
author_role author
author2 Reche Estrada, Joan
Durán Gilabert, Hortensia
author2_role author
author
dc.subject.none.fl_str_mv Metamorfisme
Paleozoic
Serralada Litoral Catalana
Metamorphism (Geology)
Paleozoic
Catalan Coastal Range (Catalonia)
topic Metamorfisme
Paleozoic
Serralada Litoral Catalana
Metamorphism (Geology)
Paleozoic
Catalan Coastal Range (Catalonia)
description Paleozoic rocks in the Catalonian Coastal Ranges are in their largestpart affectedby alow-tovery-low grade Hercynian metamorphism. Amphibolite facies conditions are only found in restricted areas such as the southwestern part of the Guilleries massif where upper amphibolite facies conditions are reached. Metamorphic grade increases from top to bottom of the Paleozoic stratigraphic sequence and the metamorphic peak is diachronous, being progressively older in the lower grade metamorphic zones. The isograd pattern, mineral assemblages, mineral chemistry and preserved reaction textures are consistent with a low pressure metamorphism possibly evolving from a previous Barrovian type event. The metamorphic climax in the high grade zone was reached after the seconddeformational phase. Calculatedpeak P-Tconditions are 620-640 OC and around 3.5 Kb . A latter episode of decompression from the maximum conditions to 1-2 Kb, with an associated temperature decrease to 530-550 OC, is recognized. The intrusion of late Hercynian granitoids produced contact metamorphic aureoles where the pyroxene-hornfels facies is locally reached.
publishDate 1990
dc.date.none.fl_str_mv 1990
2012
2012
2012
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 https://hdl.handle.net/2445/32687
url https://hdl.handle.net/2445/32687
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://www.raco.cat/index.php/ActaGeologica/article/view/75366
Acta Geologica Hispanica, 1990, vol. 25, num. 1/2, p. 31-38
dc.rights.none.fl_str_mv (c) Sebastián Castellanos, Alfredo et al., 1990
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Sebastián Castellanos, Alfredo et al., 1990
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8 p.
application/pdf
dc.publisher.none.fl_str_mv Universitat de Barcelona (UB). Institut de Cièncias de la Terra Jaume Almera (ICTJA)
publisher.none.fl_str_mv Universitat de Barcelona (UB). Institut de Cièncias de la Terra Jaume Almera (ICTJA)
dc.source.none.fl_str_mv Articles publicats en revistes (Educació Lingüística, Científica i Matemàtica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.198674

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