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Article: Multistage metamorphism of orogenic garnet-lherzolite from Zhimafang, Sulu UHP terrane, E. China: Implications for mantle wedge convection during progressive oceanic and continental subduction

TitleMultistage metamorphism of orogenic garnet-lherzolite from Zhimafang, Sulu UHP terrane, E. China: Implications for mantle wedge convection during progressive oceanic and continental subduction
Authors
KeywordsGarnet-Lherzolite
Mantle Metasomatism
Mantle Wedge Convection
Plate Subduction
Sulu Uhp Terrane
Issue Date2009
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithos
Citation
Lithos, 2009, v. 109 n. 3-4, p. 155-175 How to Cite?
AbstractSeven stages of mineral assemblage were recognized in the Zhimafang orogenic garnet lherzolite from the Sulu ultrahigh-pressure (UHP) metamorphic terrane of eastern China, which suggest that it experienced progressive mantle wedge convection during subduction of previous oceanic and subsequent continental slabs. M 1 is recorded by inclusions of high-Mg olivine, high-Mg-Al-Cr-Ca orthopyroxene and high-Mg clinopyroxene in the high Ca-Cr cores of the garnet porphyroclasts, suggesting that the Zhimafang peridotite was probably a garnet lherzolite originated from a deep and hot mantle wedge above the previously subducted oceanic slab. M 2 is represented by inclusions of high-Mg-Al chromite, high-Mg olivine and high-Mg orthopyroxene in the low-Cr mantles of the garnet porphyroclasts and core of the matrix garnet, suggesting that the rock was convected to shallow and hot mantle wedge, and was transformed to refractory spinel harzburgite or spinel dunite due to high degree of decompressional partial melting. M 3 is manifested by the origin of metasomatic clinopyroxene and orthopyroxene porphyroblasts with inclusions of high-Fe chromite, tremolitic or edenitic amphibole, phlogopite, barite and pyrite, indicating that the rock was convected to shallow, cold and wet corner of the mantle wedge, and was transformed to a fertile amphibole-bearing spinel lherzolite during continental subduction. The lherzolites was subsequently transformed to high-pressure (HP) amphibole-bearing garnet lherzolite (M 4) and UHP garnet lherzolite (M 5), indicating its convection to deep mantle wedge. Finally, the UHP garnet-lherzolite exhumed to the Earth's surface, together with the UHP terrane, and subsequently retrograded to amphibole-bearing garnet lherzolite (M 6) and chlorite-amphibole-bearing spinel lherzolite (M 7). Detailed analyses of reaction textures and mineral compositions revealed several stages of metasomatism related to oceanic and continental subduction and exhumation. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151278
ISSN
2015 Impact Factor: 3.723
2015 SCImago Journal Rankings: 2.920
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYe, Ken_US
dc.contributor.authorSong, YRen_US
dc.contributor.authorChen, Yen_US
dc.contributor.authorXu, HJen_US
dc.contributor.authorLiu, JBen_US
dc.contributor.authorSun, Men_US
dc.date.accessioned2012-06-26T06:19:56Z-
dc.date.available2012-06-26T06:19:56Z-
dc.date.issued2009en_US
dc.identifier.citationLithos, 2009, v. 109 n. 3-4, p. 155-175en_US
dc.identifier.issn0024-4937en_US
dc.identifier.urihttp://hdl.handle.net/10722/151278-
dc.description.abstractSeven stages of mineral assemblage were recognized in the Zhimafang orogenic garnet lherzolite from the Sulu ultrahigh-pressure (UHP) metamorphic terrane of eastern China, which suggest that it experienced progressive mantle wedge convection during subduction of previous oceanic and subsequent continental slabs. M 1 is recorded by inclusions of high-Mg olivine, high-Mg-Al-Cr-Ca orthopyroxene and high-Mg clinopyroxene in the high Ca-Cr cores of the garnet porphyroclasts, suggesting that the Zhimafang peridotite was probably a garnet lherzolite originated from a deep and hot mantle wedge above the previously subducted oceanic slab. M 2 is represented by inclusions of high-Mg-Al chromite, high-Mg olivine and high-Mg orthopyroxene in the low-Cr mantles of the garnet porphyroclasts and core of the matrix garnet, suggesting that the rock was convected to shallow and hot mantle wedge, and was transformed to refractory spinel harzburgite or spinel dunite due to high degree of decompressional partial melting. M 3 is manifested by the origin of metasomatic clinopyroxene and orthopyroxene porphyroblasts with inclusions of high-Fe chromite, tremolitic or edenitic amphibole, phlogopite, barite and pyrite, indicating that the rock was convected to shallow, cold and wet corner of the mantle wedge, and was transformed to a fertile amphibole-bearing spinel lherzolite during continental subduction. The lherzolites was subsequently transformed to high-pressure (HP) amphibole-bearing garnet lherzolite (M 4) and UHP garnet lherzolite (M 5), indicating its convection to deep mantle wedge. Finally, the UHP garnet-lherzolite exhumed to the Earth's surface, together with the UHP terrane, and subsequently retrograded to amphibole-bearing garnet lherzolite (M 6) and chlorite-amphibole-bearing spinel lherzolite (M 7). Detailed analyses of reaction textures and mineral compositions revealed several stages of metasomatism related to oceanic and continental subduction and exhumation. © 2008 Elsevier B.V. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/lithosen_US
dc.relation.ispartofLithosen_US
dc.subjectGarnet-Lherzoliteen_US
dc.subjectMantle Metasomatismen_US
dc.subjectMantle Wedge Convectionen_US
dc.subjectPlate Subductionen_US
dc.subjectSulu Uhp Terraneen_US
dc.titleMultistage metamorphism of orogenic garnet-lherzolite from Zhimafang, Sulu UHP terrane, E. China: Implications for mantle wedge convection during progressive oceanic and continental subductionen_US
dc.typeArticleen_US
dc.identifier.emailSun, M:minsun@hku.hken_US
dc.identifier.authoritySun, M=rp00780en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.lithos.2008.08.005en_US
dc.identifier.scopuseid_2-s2.0-63449110896en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-63449110896&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume109en_US
dc.identifier.issue3-4en_US
dc.identifier.spage155en_US
dc.identifier.epage175en_US
dc.identifier.isiWOS:000265734000003-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridYe, K=7102173832en_US
dc.identifier.scopusauthoridSong, YR=49261222700en_US
dc.identifier.scopusauthoridChen, Y=49260942900en_US
dc.identifier.scopusauthoridXu, HJ=49261340100en_US
dc.identifier.scopusauthoridLiu, JB=49261112800en_US
dc.identifier.scopusauthoridSun, M=25932315800en_US

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