Carbon isotopes of graphite: Implications on fluid history

Stable carbon isotope geochemistry provides important information for the recognition of fundamental isotope exchange processes related to the movement of carbon in the lithosphere and permits the elaboration of models for the global carbon cycle. Carbon isotope ratios in fluid-Deposited graphite ar...

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Detalles Bibliográficos
Autores: Luque Del Villar, Francisco Javier, Crespo Feo, María Elena, Barrenechea, José F., Ortega Menor, Lorena
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/42748
Acceso en línea:https://hdl.handle.net/20.500.14352/42748
Access Level:acceso abierto
Palabra clave:553.91
Graphite
Carbon isotopes
Crust
C-O-H fluids
Geología
2506 Geología
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oai_identifier_str oai:docta.ucm.es:20.500.14352/42748
network_acronym_str ES
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repository_id_str
spelling Carbon isotopes of graphite: Implications on fluid historyLuque Del Villar, Francisco JavierCrespo Feo, María ElenaBarrenechea, José F.Ortega Menor, Lorena553.91GraphiteCarbon isotopesCrustC-O-H fluidsGeología2506 GeologíaStable carbon isotope geochemistry provides important information for the recognition of fundamental isotope exchange processes related to the movement of carbon in the lithosphere and permits the elaboration of models for the global carbon cycle. Carbon isotope ratios in fluid-Deposited graphite are powerful tools for unravelling the ultimate origin of carbon (organic matter, mantle, or carbonates) and help to constrain the fluid history and the mechanisms involved in graphite deposition.Graphite precipitation in fluid-deposited occurrences results from CO2- and/or CH4-bearing aqueous fluids. Fluid flow can be considered as both a closed (without replenishment of the fluid) or an open system (with renewal of the fluid by successive fluid batches). In closed systems, carbon isotope systematics in graphite is mainly governed by Rayleigh precipitation and/or by changes in temperature affecting the fractionation factor between fluid and graphite. Such processes result in zoned graphite crystals or in successive graphite generations showing, in both cases, isotopic variation towards progressive 13C or 12C enrichment (depending upon the dominant carbon phase in the fluid, CO2 or CH4, respectively). In open systems, in which carbon is episodically introduced along the fracture systems, the carbon systematics is more complex and individual graphite crystals may display oscillatory zoning because of Rayleigh precipitation or heterogeneous variations of d13C values when mixing of fluids or changes in the composition of the fluids are the mechanisms responsible for graphite precipitation.China University of Geosciences (Beijing)Universidad Complutense de Madrid20122012-01-0120122012-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/42748reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/427482026-06-02T12:44:21Z
dc.title.none.fl_str_mv Carbon isotopes of graphite: Implications on fluid history
title Carbon isotopes of graphite: Implications on fluid history
spellingShingle Carbon isotopes of graphite: Implications on fluid history
Luque Del Villar, Francisco Javier
553.91
Graphite
Carbon isotopes
Crust
C-O-H fluids
Geología
2506 Geología
title_short Carbon isotopes of graphite: Implications on fluid history
title_full Carbon isotopes of graphite: Implications on fluid history
title_fullStr Carbon isotopes of graphite: Implications on fluid history
title_full_unstemmed Carbon isotopes of graphite: Implications on fluid history
title_sort Carbon isotopes of graphite: Implications on fluid history
dc.creator.none.fl_str_mv Luque Del Villar, Francisco Javier
Crespo Feo, María Elena
Barrenechea, José F.
Ortega Menor, Lorena
author Luque Del Villar, Francisco Javier
author_facet Luque Del Villar, Francisco Javier
Crespo Feo, María Elena
Barrenechea, José F.
Ortega Menor, Lorena
author_role author
author2 Crespo Feo, María Elena
Barrenechea, José F.
Ortega Menor, Lorena
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 553.91
Graphite
Carbon isotopes
Crust
C-O-H fluids
Geología
2506 Geología
topic 553.91
Graphite
Carbon isotopes
Crust
C-O-H fluids
Geología
2506 Geología
description Stable carbon isotope geochemistry provides important information for the recognition of fundamental isotope exchange processes related to the movement of carbon in the lithosphere and permits the elaboration of models for the global carbon cycle. Carbon isotope ratios in fluid-Deposited graphite are powerful tools for unravelling the ultimate origin of carbon (organic matter, mantle, or carbonates) and help to constrain the fluid history and the mechanisms involved in graphite deposition.Graphite precipitation in fluid-deposited occurrences results from CO2- and/or CH4-bearing aqueous fluids. Fluid flow can be considered as both a closed (without replenishment of the fluid) or an open system (with renewal of the fluid by successive fluid batches). In closed systems, carbon isotope systematics in graphite is mainly governed by Rayleigh precipitation and/or by changes in temperature affecting the fractionation factor between fluid and graphite. Such processes result in zoned graphite crystals or in successive graphite generations showing, in both cases, isotopic variation towards progressive 13C or 12C enrichment (depending upon the dominant carbon phase in the fluid, CO2 or CH4, respectively). In open systems, in which carbon is episodically introduced along the fracture systems, the carbon systematics is more complex and individual graphite crystals may display oscillatory zoning because of Rayleigh precipitation or heterogeneous variations of d13C values when mixing of fluids or changes in the composition of the fluids are the mechanisms responsible for graphite precipitation.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01
2012
2012-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/42748
url https://hdl.handle.net/20.500.14352/42748
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
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
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
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv China University of Geosciences (Beijing)
publisher.none.fl_str_mv China University of Geosciences (Beijing)
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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