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Article: Oxygen isotope composition of quartz-vein in ultrahigh-pressure eclogite from Dabieshan and implication for transport of high-pressure metamorphic fluid

TitleOxygen isotope composition of quartz-vein in ultrahigh-pressure eclogite from Dabieshan and implication for transport of high-pressure metamorphic fluid
Authors
Issue Date2001
Citation
Physics And Chemistry Of The Earth, Part A: Solid Earth And Geodesy, 2001, v. 26 n. 9-10, p. 695-704 How to Cite?
AbstractThe oxygen isotope composition of minerals from quartz-veins and host-eclogites in Dabieshan, China was measured in order to place geochemical constraints on the origin and transport of high-pressure metamorphic fluids. The results, along with structural and petrological relationships between vein and wallrock, show that the quartz veins are the high-pressure metamorphic and thus formed prior to eclogite-facies recrystallization when they were exhumated from mantle depths to deep crustal levels. Not only is the oxygen isotope composition of the vein-quartz identical to that of the host-eclogite, but in addition the oxygen isotope geothermometry of mineral-pairs from the quartz-veins yield temperatures that are close to the eclogite-facies temperatures. Therefore, the vein-forming fluid was likely derived from the local host-eclogites by the exsolution of dissolved hydroxyls within eclogite minerals due to significant pressure decrease. Local advective transport of fluid is the predominant mechanism in the processes of vein precipitation. Fluid flow prior to the eclogite-facies recrystalization may occur mainly along pressure gradients. The loss of the UHP or HP fluid at the different depths during exhumation may be the potential cause for concordant and discordant isotope temperatures between different mineral-pairs in the eclogites. © 2001 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/151048
ISSN
2003 Impact Factor: 1.197
2004 SCImago Journal Rankings: 0.854
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, YLen_US
dc.contributor.authorZheng, YFen_US
dc.contributor.authorFu, Ben_US
dc.contributor.authorZhou, JBen_US
dc.contributor.authorWei, CSen_US
dc.date.accessioned2012-06-26T06:16:29Z-
dc.date.available2012-06-26T06:16:29Z-
dc.date.issued2001en_US
dc.identifier.citationPhysics And Chemistry Of The Earth, Part A: Solid Earth And Geodesy, 2001, v. 26 n. 9-10, p. 695-704en_US
dc.identifier.issn1464-1895en_US
dc.identifier.urihttp://hdl.handle.net/10722/151048-
dc.description.abstractThe oxygen isotope composition of minerals from quartz-veins and host-eclogites in Dabieshan, China was measured in order to place geochemical constraints on the origin and transport of high-pressure metamorphic fluids. The results, along with structural and petrological relationships between vein and wallrock, show that the quartz veins are the high-pressure metamorphic and thus formed prior to eclogite-facies recrystallization when they were exhumated from mantle depths to deep crustal levels. Not only is the oxygen isotope composition of the vein-quartz identical to that of the host-eclogite, but in addition the oxygen isotope geothermometry of mineral-pairs from the quartz-veins yield temperatures that are close to the eclogite-facies temperatures. Therefore, the vein-forming fluid was likely derived from the local host-eclogites by the exsolution of dissolved hydroxyls within eclogite minerals due to significant pressure decrease. Local advective transport of fluid is the predominant mechanism in the processes of vein precipitation. Fluid flow prior to the eclogite-facies recrystalization may occur mainly along pressure gradients. The loss of the UHP or HP fluid at the different depths during exhumation may be the potential cause for concordant and discordant isotope temperatures between different mineral-pairs in the eclogites. © 2001 Elsevier Science Ltd. All rights reserved.en_US
dc.languageengen_US
dc.relation.ispartofPhysics and Chemistry of the Earth, Part A: Solid Earth and Geodesyen_US
dc.titleOxygen isotope composition of quartz-vein in ultrahigh-pressure eclogite from Dabieshan and implication for transport of high-pressure metamorphic fluiden_US
dc.typeArticleen_US
dc.identifier.emailLi, YL:yiliang@hkucc.hku.hken_US
dc.identifier.authorityLi, YL=rp01354en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S1464-1895(01)00120-Xen_US
dc.identifier.scopuseid_2-s2.0-0034844586en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034844586&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume26en_US
dc.identifier.issue9-10en_US
dc.identifier.spage695en_US
dc.identifier.epage704en_US
dc.identifier.isiWOS:000171606900005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLi, YL=27171876700en_US
dc.identifier.scopusauthoridZheng, YF=7404838286en_US
dc.identifier.scopusauthoridFu, B=35960736900en_US
dc.identifier.scopusauthoridZhou, JB=7405547094en_US
dc.identifier.scopusauthoridWei, CS=7401657950en_US

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