The Pelona-Pico Duarte basalts Formation, Central Hispaniola

Located in Central Hispaniola, the Pelona-Pico Duarte basalts Formation (Fm.) offers an opportunity to study the Late Cretaceous Caribbean large igneous province magmatism on land. It is composed by a ~2.5km-thick pile of massive and monotonous submarine flows of basalts, locally intruded by synvolc...

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Autores: Escuder-Viruete, Joaquín, Pérez-Estaún, Andrés, Joubert, M., Weis, D.
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:89008
Acceso en línea:https://ddd.uab.cat/record/89008
https://dx.doi.org/urn:doi:10.1344/105.000001716
Access Level:acceso abierto
Palabra clave:Caribbean large igneous province
Mantle source
Hispaniola
Caribbean plate
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spelling The Pelona-Pico Duarte basalts Formation, Central Hispaniolaan on-land section of Late Cretaceous volcanism related to the Caribbean large igneous provinceEscuder-Viruete, JoaquínPérez-Estaún, AndrésJoubert, M.Weis, D.Caribbean large igneous provinceMantle sourceHispaniolaCaribbean plateLocated in Central Hispaniola, the Pelona-Pico Duarte basalts Formation (Fm.) offers an opportunity to study the Late Cretaceous Caribbean large igneous province magmatism on land. It is composed by a ~2.5km-thick pile of massive and monotonous submarine flows of basalts, locally intruded by synvolcanic dikes and sills of dolerite. The Pelona-Pico Duarte basalts Fm. was emplaced onto Turonian-Lower Campanian island-arc volcanic and sedimentary sequences, and is overlain by Maastrichtian platformal carbonates. Two 40Ar/39Ar plateau ages indicate both extrusive and intrusive magmatic activity at least during the 79-68Ma interval (Middle Campanian to Maastrichtian), so the magmas were in part coeval with the late phases of the Caribbean large igneous province. The basalts have a restricted major-and trace-element, and isotopic, compositional variation. For a range of 47.6- 50.2wt.% SiO2, the Pelona-Pico Duarte basalts Fm. has relatively high contents in TiO2 (1.5-3.6wt.%) and Fe2O3T (10.7-13.1wt.%). On the basis of MgO contents, samples can be classified into tholeiitic basalts (<8wt.%) and high-Mg basalts (8-12wt.%). Mineral assemblages and major element compositional trends indicate that basalts derived from tholeiitic parental magmas by fractionation of olivine plus spinel, clinopyroxene and orthopyroxene, observed as microphenocrysts, as well as plagioclase and Fe-Ti oxides. In a MORB-normalized multi-element plot, the basalts have light rare earth elements (LREE) enriched ([La/Nd]N=1.5-2.2) and heavy rare earth elements (HREE) depleted ([Sm/Yb]N=2.1-3.7) patterns, with very high Nb contents (11-30ppm). These patterns and the values of trace element ratios (K/Ba<20, Ti/V. 22011-01-0120112011-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/89008https://dx.doi.org/urn:doi:10.1344/105.000001716reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria.https://creativecommons.org/licenses/by-sa/3.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:890082026-06-06T12:50:31Z
dc.title.none.fl_str_mv The Pelona-Pico Duarte basalts Formation, Central Hispaniola
an on-land section of Late Cretaceous volcanism related to the Caribbean large igneous province
title The Pelona-Pico Duarte basalts Formation, Central Hispaniola
spellingShingle The Pelona-Pico Duarte basalts Formation, Central Hispaniola
Escuder-Viruete, Joaquín
Caribbean large igneous province
Mantle source
Hispaniola
Caribbean plate
title_short The Pelona-Pico Duarte basalts Formation, Central Hispaniola
title_full The Pelona-Pico Duarte basalts Formation, Central Hispaniola
title_fullStr The Pelona-Pico Duarte basalts Formation, Central Hispaniola
title_full_unstemmed The Pelona-Pico Duarte basalts Formation, Central Hispaniola
title_sort The Pelona-Pico Duarte basalts Formation, Central Hispaniola
dc.creator.none.fl_str_mv Escuder-Viruete, Joaquín
Pérez-Estaún, Andrés
Joubert, M.
Weis, D.
author Escuder-Viruete, Joaquín
author_facet Escuder-Viruete, Joaquín
Pérez-Estaún, Andrés
Joubert, M.
Weis, D.
author_role author
author2 Pérez-Estaún, Andrés
Joubert, M.
Weis, D.
author2_role author
author
author
dc.subject.none.fl_str_mv Caribbean large igneous province
Mantle source
Hispaniola
Caribbean plate
topic Caribbean large igneous province
Mantle source
Hispaniola
Caribbean plate
description Located in Central Hispaniola, the Pelona-Pico Duarte basalts Formation (Fm.) offers an opportunity to study the Late Cretaceous Caribbean large igneous province magmatism on land. It is composed by a ~2.5km-thick pile of massive and monotonous submarine flows of basalts, locally intruded by synvolcanic dikes and sills of dolerite. The Pelona-Pico Duarte basalts Fm. was emplaced onto Turonian-Lower Campanian island-arc volcanic and sedimentary sequences, and is overlain by Maastrichtian platformal carbonates. Two 40Ar/39Ar plateau ages indicate both extrusive and intrusive magmatic activity at least during the 79-68Ma interval (Middle Campanian to Maastrichtian), so the magmas were in part coeval with the late phases of the Caribbean large igneous province. The basalts have a restricted major-and trace-element, and isotopic, compositional variation. For a range of 47.6- 50.2wt.% SiO2, the Pelona-Pico Duarte basalts Fm. has relatively high contents in TiO2 (1.5-3.6wt.%) and Fe2O3T (10.7-13.1wt.%). On the basis of MgO contents, samples can be classified into tholeiitic basalts (<8wt.%) and high-Mg basalts (8-12wt.%). Mineral assemblages and major element compositional trends indicate that basalts derived from tholeiitic parental magmas by fractionation of olivine plus spinel, clinopyroxene and orthopyroxene, observed as microphenocrysts, as well as plagioclase and Fe-Ti oxides. In a MORB-normalized multi-element plot, the basalts have light rare earth elements (LREE) enriched ([La/Nd]N=1.5-2.2) and heavy rare earth elements (HREE) depleted ([Sm/Yb]N=2.1-3.7) patterns, with very high Nb contents (11-30ppm). These patterns and the values of trace element ratios (K/Ba<20, Ti/V.
publishDate 2011
dc.date.none.fl_str_mv 2
2011-01-01
2011
2011-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/89008
https://dx.doi.org/urn:doi:10.1344/105.000001716
url https://ddd.uab.cat/record/89008
https://dx.doi.org/urn:doi:10.1344/105.000001716
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-sa/3.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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