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Article: An oxygen isotope study of quartz veins within eclogites from the Dabie terrane

TitleAn oxygen isotope study of quartz veins within eclogites from the Dabie terrane
Authors
KeywordsDabie Terrane
Eclogite
Metamorphic Fluid
Oxygen Isotopes
Quartz Vein
Ultrahigh Pressure Metamorphism
Issue Date2001
Publisher中國科學院. The Journal's web site is located at http://jdxg.chinajournal.net.cn/
Citation
Science In China, Series D: Earth Sciences, 2001, v. 44 n. 7, p. 621-634 How to Cite?
AbstractThe oxygen isotope composition of minerals from quartz veins and host eclogites in the Dabie terrane was measured in order to place geochemical constraints on the origin and transport of metamorphic fluid. The results are discussed together with structural and petrological relationships between quartz vein and wallrock. The quartz veins can be temporally classified into three groups: (1) synmetamorphic vein which would be formed prior to eclogite-facies recrystallization when they were exhumated from mantle depths to deep crustal levels; (2) early retrogressive vein which was formed in the early stage of eclogite exhumation subsequent to the recrystallization, the vein-forming fluid is still relevant to the eclogites; (3) late retrogressive vein which was formed in the late stage of eclogite exhumation from deep crustal to upper crustal levels, oxygen isotope fractionation between vein quartz and host eclogite significantly deviates from equilibrium values and the vein-forming fluid was principally derived from granitic gneiss hosting the eclogites. For the synmetamorphic vein, it appears that local advective transport of fluid is the predominant mechanism in the processes of vein precipitation; the scale of oxygen isotope homogenization within the veins is much larger than that within the associated eclogites. The vein-forming fluid would be derived from the exsolution of dissolved hydroxyls within eclogite minerals due to significant pressure decrease. Fluid flow prior to the eclogite-facies recrystallization and the early retrogression may occur mainly along pressure gradients.
Persistent Identifierhttp://hdl.handle.net/10722/151072
ISSN
2011 Impact Factor: 1.588
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Yen_US
dc.contributor.authorZheng, Yen_US
dc.contributor.authorFu, Ben_US
dc.date.accessioned2012-06-26T06:16:47Z-
dc.date.available2012-06-26T06:16:47Z-
dc.date.issued2001en_US
dc.identifier.citationScience In China, Series D: Earth Sciences, 2001, v. 44 n. 7, p. 621-634en_US
dc.identifier.issn1006-9313en_US
dc.identifier.urihttp://hdl.handle.net/10722/151072-
dc.description.abstractThe oxygen isotope composition of minerals from quartz veins and host eclogites in the Dabie terrane was measured in order to place geochemical constraints on the origin and transport of metamorphic fluid. The results are discussed together with structural and petrological relationships between quartz vein and wallrock. The quartz veins can be temporally classified into three groups: (1) synmetamorphic vein which would be formed prior to eclogite-facies recrystallization when they were exhumated from mantle depths to deep crustal levels; (2) early retrogressive vein which was formed in the early stage of eclogite exhumation subsequent to the recrystallization, the vein-forming fluid is still relevant to the eclogites; (3) late retrogressive vein which was formed in the late stage of eclogite exhumation from deep crustal to upper crustal levels, oxygen isotope fractionation between vein quartz and host eclogite significantly deviates from equilibrium values and the vein-forming fluid was principally derived from granitic gneiss hosting the eclogites. For the synmetamorphic vein, it appears that local advective transport of fluid is the predominant mechanism in the processes of vein precipitation; the scale of oxygen isotope homogenization within the veins is much larger than that within the associated eclogites. The vein-forming fluid would be derived from the exsolution of dissolved hydroxyls within eclogite minerals due to significant pressure decrease. Fluid flow prior to the eclogite-facies recrystallization and the early retrogression may occur mainly along pressure gradients.en_US
dc.languageengen_US
dc.publisher中國科學院. The Journal's web site is located at http://jdxg.chinajournal.net.cn/zh_HK
dc.relation.ispartofScience in China, Series D: Earth Sciencesen_US
dc.subjectDabie Terraneen_US
dc.subjectEclogiteen_US
dc.subjectMetamorphic Fluiden_US
dc.subjectOxygen Isotopesen_US
dc.subjectQuartz Veinen_US
dc.subjectUltrahigh Pressure Metamorphismen_US
dc.titleAn oxygen isotope study of quartz veins within eclogites from the Dabie terraneen_US
dc.typeArticleen_US
dc.identifier.emailLi, Y:yiliang@hkucc.hku.hken_US
dc.identifier.authorityLi, Y=rp01354en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0035385758en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035385758&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume44en_US
dc.identifier.issue7en_US
dc.identifier.spage621en_US
dc.identifier.epage634en_US
dc.publisher.placeChinaen_US
dc.identifier.scopusauthoridLi, Y=27171876700en_US
dc.identifier.scopusauthoridZheng, Y=7404838286en_US
dc.identifier.scopusauthoridFu, B=35960736900en_US

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