3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)

The aim of this work is to propose a first-order estimate of the crustal and lithospheric mantle geometry of the Arabia-Eurasia collision zone and to separate the measured Bouguer anomaly into its regional and local components. The crustal and lithospheric mantle structure is calculated from the geo...

Descripción completa

Detalles Bibliográficos
Autores: Jimenez-Munt, Ivone, Fernández Ortiga, Manel, Saura, Eduard, Vergés Masip, Jaume, García-Castellanos, Daniel
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/74827
Acceso en línea:http://hdl.handle.net/10261/74827
Access Level:acceso abierto
Palabra clave:Gravity anomalies and Earth structure
Continental tectonics: compressional
Dynamics: gravity and tectonics
Crustal structure.
id ES_7442869baedc8bfd491ea85dfea6787b
oai_identifier_str oai:digital.csic.es:10261/74827
network_acronym_str ES
network_name_str España
repository_id_str
spelling 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)Jimenez-Munt, IvoneFernández Ortiga, ManelSaura, EduardVergés Masip, JaumeGarcía-Castellanos, DanielGravity anomalies and Earth structureContinental tectonics: compressionalDynamics: gravity and tectonicsCrustal structure.The aim of this work is to propose a first-order estimate of the crustal and lithospheric mantle geometry of the Arabia-Eurasia collision zone and to separate the measured Bouguer anomaly into its regional and local components. The crustal and lithospheric mantle structure is calculated from the geoid height and elevation data combined with thermal analysis. Our results show that Moho depth varies from ~42 km at the Mesopotamian-Persian Gulf foreland basin to ~60 km below the High Zagros. The lithosphere is thicker beneath the foreland basin (~200 km) and thinner underneath the High Zagros and Central Iran (~140 km). Most of this lithospheric mantle thinning is accommodated under the Zagros mountain belt coinciding with the suture between two different mantle domains on the Sanandaj-Sirjan Zone. The regional gravity field is obtained by calculating the gravimetric response of the 3-D crustal and lithospheric mantle structure obtained by combining elevation and geoid data. The calculated regional Bouguer anomaly differs noticeably from those obtained by filtering or just isostatic methods. The residual gravity anomaly, obtained by subtraction of the regional components to the measured field, is analyzed in terms of the dominating upper crustal structures. Deep basins and areas with salt deposits are characterized by negative values (~-20 mGal), whereas the positive values are related to igneous and ophiolite complexes and shallow basement depths (~20 mGal). © 2012 The Authors Geophysical Journal International © 2012 RAS.This research has been partly funded by ProjectsATIZA (CGL2009-09662-BTE) and TECLA (CGL2011–26670) and consolider-Ingenio 2010 Topo-Iberia (CSD2006-00041).Peer ReviewedRoyal Astronomical Society20122013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/74827reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1111/j.1365-246X.2012.05580.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/748272026-05-22T06:33:51Z
dc.title.none.fl_str_mv 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
title 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
spellingShingle 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
Jimenez-Munt, Ivone
Gravity anomalies and Earth structure
Continental tectonics: compressional
Dynamics: gravity and tectonics
Crustal structure.
title_short 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
title_full 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
title_fullStr 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
title_full_unstemmed 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
title_sort 3-D lithospheric structure and regional/residual Bouguer anomalies in the Arabia-Eurasia collision (Iran)
dc.creator.none.fl_str_mv Jimenez-Munt, Ivone
Fernández Ortiga, Manel
Saura, Eduard
Vergés Masip, Jaume
García-Castellanos, Daniel
author Jimenez-Munt, Ivone
author_facet Jimenez-Munt, Ivone
Fernández Ortiga, Manel
Saura, Eduard
Vergés Masip, Jaume
García-Castellanos, Daniel
author_role author
author2 Fernández Ortiga, Manel
Saura, Eduard
Vergés Masip, Jaume
García-Castellanos, Daniel
author2_role author
author
author
author
dc.subject.none.fl_str_mv Gravity anomalies and Earth structure
Continental tectonics: compressional
Dynamics: gravity and tectonics
Crustal structure.
topic Gravity anomalies and Earth structure
Continental tectonics: compressional
Dynamics: gravity and tectonics
Crustal structure.
description The aim of this work is to propose a first-order estimate of the crustal and lithospheric mantle geometry of the Arabia-Eurasia collision zone and to separate the measured Bouguer anomaly into its regional and local components. The crustal and lithospheric mantle structure is calculated from the geoid height and elevation data combined with thermal analysis. Our results show that Moho depth varies from ~42 km at the Mesopotamian-Persian Gulf foreland basin to ~60 km below the High Zagros. The lithosphere is thicker beneath the foreland basin (~200 km) and thinner underneath the High Zagros and Central Iran (~140 km). Most of this lithospheric mantle thinning is accommodated under the Zagros mountain belt coinciding with the suture between two different mantle domains on the Sanandaj-Sirjan Zone. The regional gravity field is obtained by calculating the gravimetric response of the 3-D crustal and lithospheric mantle structure obtained by combining elevation and geoid data. The calculated regional Bouguer anomaly differs noticeably from those obtained by filtering or just isostatic methods. The residual gravity anomaly, obtained by subtraction of the regional components to the measured field, is analyzed in terms of the dominating upper crustal structures. Deep basins and areas with salt deposits are characterized by negative values (~-20 mGal), whereas the positive values are related to igneous and ophiolite complexes and shallow basement depths (~20 mGal). © 2012 The Authors Geophysical Journal International © 2012 RAS.
publishDate 2012
dc.date.none.fl_str_mv 2012
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/74827
url http://hdl.handle.net/10261/74827
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1111/j.1365-246X.2012.05580.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Royal Astronomical Society
publisher.none.fl_str_mv Royal Astronomical Society
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
_version_ 1869410882079948800
score 15,812429

Similares en LA Referencia