Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions

Ore deposits are rock volumes with anomalously high concentrations of selected elements that enable their extraction with economic profit. Metallic ore deposits may form in a wide spectrum of geological conditions, although they mostly occur in the magmatic and hydrothermal environments. Despite ext...

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Detalles Bibliográficos
Autor: Schettino, Erwin
Tipo de recurso: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/348220
Acceso en línea:http://hdl.handle.net/10261/348220
Access Level:acceso abierto
Palabra clave:Subcontinental lithospheric mantle
Peridotite xenoliths
Base-metal sulfides
Platinum-group minerals
Metal nanoparticles
Chalcophile elements
Re-Os isotopes
Magmatic-hydrothermal ore deposits
Manto litosférico subcontinental
Xenolitos de peridotitas
Sulfuros de metales base
Minerales del grupo del platino
Nanopartículas de metales
Elementos calcófilos
Isotopos de Re-Os
Depósitos minerales magmáticohidrotermales
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dc.title.none.fl_str_mv Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
title Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
spellingShingle Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
Schettino, Erwin
Subcontinental lithospheric mantle
Peridotite xenoliths
Base-metal sulfides
Platinum-group minerals
Metal nanoparticles
Chalcophile elements
Re-Os isotopes
Magmatic-hydrothermal ore deposits
Manto litosférico subcontinental
Xenolitos de peridotitas
Sulfuros de metales base
Minerales del grupo del platino
Nanopartículas de metales
Elementos calcófilos
Isotopos de Re-Os
Depósitos minerales magmáticohidrotermales
title_short Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
title_full Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
title_fullStr Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
title_full_unstemmed Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
title_sort Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton Regions
dc.creator.none.fl_str_mv Schettino, Erwin
author Schettino, Erwin
author_facet Schettino, Erwin
author_role author
dc.contributor.none.fl_str_mv Marchesi, Claudio
González Jiménez, José María
Ministerio de Economía, Industria y Competitividad (España)
Junta de Andalucía
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Subcontinental lithospheric mantle
Peridotite xenoliths
Base-metal sulfides
Platinum-group minerals
Metal nanoparticles
Chalcophile elements
Re-Os isotopes
Magmatic-hydrothermal ore deposits
Manto litosférico subcontinental
Xenolitos de peridotitas
Sulfuros de metales base
Minerales del grupo del platino
Nanopartículas de metales
Elementos calcófilos
Isotopos de Re-Os
Depósitos minerales magmáticohidrotermales
topic Subcontinental lithospheric mantle
Peridotite xenoliths
Base-metal sulfides
Platinum-group minerals
Metal nanoparticles
Chalcophile elements
Re-Os isotopes
Magmatic-hydrothermal ore deposits
Manto litosférico subcontinental
Xenolitos de peridotitas
Sulfuros de metales base
Minerales del grupo del platino
Nanopartículas de metales
Elementos calcófilos
Isotopos de Re-Os
Depósitos minerales magmáticohidrotermales
description Ore deposits are rock volumes with anomalously high concentrations of selected elements that enable their extraction with economic profit. Metallic ore deposits may form in a wide spectrum of geological conditions, although they mostly occur in the magmatic and hydrothermal environments. Despite extensive investigation aimed to clarify the genesis and distribution of magmatichydrothermal ores, major controversies still concern the processes that drive the transfer and storage of metals from background levels in their source region to exploitable amounts in the crust. A key unresolved aspect regards whether the ore-productive magmas inherit their metallogenic fertility from pre-enriched domains of the mantle source, or they attain high metal concentrations due to favorable fractionation conditions during magma percolation and ascent. This issue is especially important for targeting mineral camps, as it constrains the specific geological conditions and environments that enhance the metallogenic endowment of the continental crust. To this regard, a better knowledge of the mechanisms and repositories that control the mobility and storage of metals in mantle rocks and magmas is essential. The general aim of this Ph.D. thesis is to assess the geological factors that govern the mobilization, transport, and concentration of chalcophile metals in the subcontinental lithospheric mantle (SCLM), emphasizing their impacts on the formation and distribution of magmatic-hydrothermal ore deposits in the overlying crust. To achieve this main goal, the thesis investigates the mineralogy, geochemistry and petrology of mantle peridotite xenoliths and associated volcanic rocks from mineralized regions in Central Mexico and Southeast Spain, focusing on base-metal sulfides (BMS), platinum-group minerals (PGM) and nano-tomicrometer- sized metal-rich particles as mineralogical-geochemical tracers of the behavior of precious and semi-metals in the SCLM. For this purpose, this study combines traditional analytical methods (e.g., transmitted/reflected light optical microscopy, scanning electron microscopy, electron microprobe analysis) with advanced techniques for the in-situ characterization of minerals (e.g., laser ablation-(multicollector) inductively coupled plasma-mass spectrometry, highresolution transmission electron microscopy).
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
http://purl.org/coar/resource_type/c_db06
Publisher's version
info:eu-repo/semantics/publishedVersion
format doctoralThesis
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/348220
url http://hdl.handle.net/10261/348220
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//IPID2019-111715GB-I00
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Universidad de Granada
publisher.none.fl_str_mv Universidad de Granada
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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spelling Active Components of the Subcontinental Lithospheric Mantle for Crustal Metallogenic Endowment in Off-Craton RegionsSchettino, ErwinSubcontinental lithospheric mantlePeridotite xenolithsBase-metal sulfidesPlatinum-group mineralsMetal nanoparticlesChalcophile elementsRe-Os isotopesMagmatic-hydrothermal ore depositsManto litosférico subcontinentalXenolitos de peridotitasSulfuros de metales baseMinerales del grupo del platinoNanopartículas de metalesElementos calcófilosIsotopos de Re-OsDepósitos minerales magmáticohidrotermalesOre deposits are rock volumes with anomalously high concentrations of selected elements that enable their extraction with economic profit. Metallic ore deposits may form in a wide spectrum of geological conditions, although they mostly occur in the magmatic and hydrothermal environments. Despite extensive investigation aimed to clarify the genesis and distribution of magmatichydrothermal ores, major controversies still concern the processes that drive the transfer and storage of metals from background levels in their source region to exploitable amounts in the crust. A key unresolved aspect regards whether the ore-productive magmas inherit their metallogenic fertility from pre-enriched domains of the mantle source, or they attain high metal concentrations due to favorable fractionation conditions during magma percolation and ascent. This issue is especially important for targeting mineral camps, as it constrains the specific geological conditions and environments that enhance the metallogenic endowment of the continental crust. To this regard, a better knowledge of the mechanisms and repositories that control the mobility and storage of metals in mantle rocks and magmas is essential. The general aim of this Ph.D. thesis is to assess the geological factors that govern the mobilization, transport, and concentration of chalcophile metals in the subcontinental lithospheric mantle (SCLM), emphasizing their impacts on the formation and distribution of magmatic-hydrothermal ore deposits in the overlying crust. To achieve this main goal, the thesis investigates the mineralogy, geochemistry and petrology of mantle peridotite xenoliths and associated volcanic rocks from mineralized regions in Central Mexico and Southeast Spain, focusing on base-metal sulfides (BMS), platinum-group minerals (PGM) and nano-tomicrometer- sized metal-rich particles as mineralogical-geochemical tracers of the behavior of precious and semi-metals in the SCLM. For this purpose, this study combines traditional analytical methods (e.g., transmitted/reflected light optical microscopy, scanning electron microscopy, electron microprobe analysis) with advanced techniques for the in-situ characterization of minerals (e.g., laser ablation-(multicollector) inductively coupled plasma-mass spectrometry, highresolution transmission electron microscopy).Tesis Univ. Granada.; The BES- 2017-079949 “Ayudas para Contratos Predoctorales para la Formación de Doctores” fellowship to Erwin Schettino associated with the project CGL2016- 81085-R of the Ministerio de Economía, Industria y Competitividad de España.; Spanish projects PID2019-111715GB-I00/AEI/10.13039/501100011033 and RTI2018-099157-AI00, and by the Junta de Andalucía research group RNM-131; Project FUMESA B-RNM-189-UGR18. Research grants, infrastructures, and human resources leading to this research have benefited from funding by the European Social Fund and the European Regional Development Fund.Universidad de GranadaMarchesi, ClaudioGonzález Jiménez, José MaríaMinisterio de Economía, Industria y Competitividad (España)Junta de AndalucíaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420232024info:eu-repo/semantics/doctoralThesishttp://purl.org/coar/resource_type/c_db06Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/348220reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//IPID2019-111715GB-I00Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3482202026-05-22T06:33:51Z
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