Magma differentiation and contamination: Constraints from experimental and field evidences

Earth and Space Science Open Archive.

Detalles Bibliográficos
Autores: Castro Dorado, Antonio, Rodríguez, Carmen, Díaz–Alvarado, J., Fernández, Carlos, García-Moreno, Olga
Tipo de recurso: otro
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/234853
Acceso en línea:http://hdl.handle.net/10261/234853
Access Level:acceso abierto
Palabra clave:Experimental petrology
Batholiths
Fractionation
Magma 18 crystallization
Magma contamination
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spelling Magma differentiation and contamination: Constraints from experimental and field evidencesCastro Dorado, AntonioRodríguez, CarmenDíaz–Alvarado, J.Fernández, CarlosGarcía-Moreno, OlgaExperimental petrologyBatholithsFractionationMagma 18 crystallizationMagma contaminationEarth and Space Science Open Archive.Differentiation and contamination of silicic magmas are common phenomena characterizing the granite batholiths and large igneous provinces that build up most of the continental crust. Although they can be identified by means of geochemical relations of igneous rocks exposed in the continents, the mechanisms allowing magmas to undergo the necessary crystal–liquid separation and digestion of country rocks for differentiation and contamination are poorly constrained. In this paper we show two independent approaches that are essential to understand fractionation and contamination of magmas. These are (1) the study and interpretation of field relations in exposed deep sections of batholiths, and (2) the results of laboratory experiments carried out at middle–upper crust pressure. Experiments support that fractionation is intrinsic to crystallization of water-bearing magmas in thermal boundary layers created at the sidewalls of ascent conduits and walls of magma chambers. Gravitational collapse and fluid migration are processes identified in experimental capsules. Similarly, reaction experiments in mixed capsules support reactive bulk assimilation as a plausible mechanism that is compatible with field and petrographic observations in contaminated granitic rocks.This work is supported by the State Agency for Research (AEI) (Project: PGC2018– 096534–B–I00). C.R. is grateful for her postdoctoral contract from the University of Huelva (Grant: Estrategia de Politíca Científica UHU 2016/2017).Peer reviewedAmerican Geophysical UnionMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Universidad de HuelvaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202120212020info:eu-repo/semantics/otherhttp://purl.org/coar/resource_type/c_3248Preprintinfo:eu-repo/semantics/submittedVersioninfo:eu-repo/semantics/bookParthttp://hdl.handle.net/10261/234853reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018– 096534–B–I00PGC2018– 096534–B–I00/AEI/10.13039/501100011033Geophysical Monograph Serieshttps://doi.org/10.1002/essoar.10504608.1Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2348532026-05-22T06:33:51Z
dc.title.none.fl_str_mv Magma differentiation and contamination: Constraints from experimental and field evidences
title Magma differentiation and contamination: Constraints from experimental and field evidences
spellingShingle Magma differentiation and contamination: Constraints from experimental and field evidences
Castro Dorado, Antonio
Experimental petrology
Batholiths
Fractionation
Magma 18 crystallization
Magma contamination
title_short Magma differentiation and contamination: Constraints from experimental and field evidences
title_full Magma differentiation and contamination: Constraints from experimental and field evidences
title_fullStr Magma differentiation and contamination: Constraints from experimental and field evidences
title_full_unstemmed Magma differentiation and contamination: Constraints from experimental and field evidences
title_sort Magma differentiation and contamination: Constraints from experimental and field evidences
dc.creator.none.fl_str_mv Castro Dorado, Antonio
Rodríguez, Carmen
Díaz–Alvarado, J.
Fernández, Carlos
García-Moreno, Olga
author Castro Dorado, Antonio
author_facet Castro Dorado, Antonio
Rodríguez, Carmen
Díaz–Alvarado, J.
Fernández, Carlos
García-Moreno, Olga
author_role author
author2 Rodríguez, Carmen
Díaz–Alvarado, J.
Fernández, Carlos
García-Moreno, Olga
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Universidad de Huelva
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Experimental petrology
Batholiths
Fractionation
Magma 18 crystallization
Magma contamination
topic Experimental petrology
Batholiths
Fractionation
Magma 18 crystallization
Magma contamination
description Earth and Space Science Open Archive.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/other
http://purl.org/coar/resource_type/c_3248
Preprint
info:eu-repo/semantics/submittedVersion
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format other
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/234853
url http://hdl.handle.net/10261/234853
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PGC2018– 096534–B–I00
PGC2018– 096534–B–I00/AEI/10.13039/501100011033
Geophysical Monograph Series
https://doi.org/10.1002/essoar.10504608.1
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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