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Article: Metamorphic P-T path of the Southern Jilin complex: Implicatiions for tectonic evolution of the Eastern Block of the North China Craton

TitleMetamorphic P-T path of the Southern Jilin complex: Implicatiions for tectonic evolution of the Eastern Block of the North China Craton
Authors
Issue Date2003
PublisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/TIGR
Citation
International Geology Review, 2003, v. 45 n. 11, p. 1029-1043 How to Cite?
AbstractThe Southern Jilin complex represents the northeasternmost exposure of the basement rocks in the Eastern block of the North China craton and consists of intensely foliated tonalitic-trondhjemitic-granodioritic (TTG) gneisses, weakly foliated syn-tectonic potassium granites, post-tectonic hypersthene-quartz diorite and clinopyroxene granodiorite and a minor amount of supracrustal rocks. The supracrustal rocks include ultramafic to felsic volcanic rocks, BIF, felsic paragneisses, pelitic gneisses, calc-silicates, and marbles metamorphosed from amphibolite to granulite facies. The petrological evidence from the mafic granulites and pelitic gneisses indicates three metamorphic mineral assemblages (M1 to M3). The early prograde assemblage (M1) is preserved as mineral inclusions within minerals of the peak assemblages, represented by hornblende + plagioclase + quartz ± biotite in the mafic granulites and biotite + plagioclase + quartz in the pelitic gneisses, with P-T conditions estimated at ∼0.6 GPa and ∼750°C. The peak assemblage is represented by orthopyroxene + clinopyroxene + garnet + plagioclase + quartz in the mafic granulites and garnet + sillimanite + plagioclase + quartz + biotite in pelitic gneisses, with P-T conditions estimated at 0.84-0.87 GPa and 800-850°C. The post-peak assemblage is characterized by garnet + quartz symplectic coronas in mafic granulites and kyanite replacing sillimanite in the pelitic gneisses, which probably occurred at ∼0.85 GPa and 760°C. These mineral assemblages and their P-T estimates define an anticlockwise P-T path involving nearly isobaric cooling, reflecting an origin related to the intrusion and underplating of large amounts of mantle-derived magmas, which are considered to have been related to the interaction of upwelling mantle plumes with the lithosphere in the Eastern block of the North China craton in the Late Archean.
Persistent Identifierhttp://hdl.handle.net/10722/151121
ISSN
2015 Impact Factor: 2.365
2015 SCImago Journal Rankings: 1.248
References

 

DC FieldValueLanguage
dc.contributor.authorGe, Wen_US
dc.contributor.authorZhao, Gen_US
dc.contributor.authorSun, Den_US
dc.contributor.authorWu, Fen_US
dc.contributor.authorLin, Qen_US
dc.date.accessioned2012-06-26T06:17:21Z-
dc.date.available2012-06-26T06:17:21Z-
dc.date.issued2003en_US
dc.identifier.citationInternational Geology Review, 2003, v. 45 n. 11, p. 1029-1043en_US
dc.identifier.issn0020-6814en_US
dc.identifier.urihttp://hdl.handle.net/10722/151121-
dc.description.abstractThe Southern Jilin complex represents the northeasternmost exposure of the basement rocks in the Eastern block of the North China craton and consists of intensely foliated tonalitic-trondhjemitic-granodioritic (TTG) gneisses, weakly foliated syn-tectonic potassium granites, post-tectonic hypersthene-quartz diorite and clinopyroxene granodiorite and a minor amount of supracrustal rocks. The supracrustal rocks include ultramafic to felsic volcanic rocks, BIF, felsic paragneisses, pelitic gneisses, calc-silicates, and marbles metamorphosed from amphibolite to granulite facies. The petrological evidence from the mafic granulites and pelitic gneisses indicates three metamorphic mineral assemblages (M1 to M3). The early prograde assemblage (M1) is preserved as mineral inclusions within minerals of the peak assemblages, represented by hornblende + plagioclase + quartz ± biotite in the mafic granulites and biotite + plagioclase + quartz in the pelitic gneisses, with P-T conditions estimated at ∼0.6 GPa and ∼750°C. The peak assemblage is represented by orthopyroxene + clinopyroxene + garnet + plagioclase + quartz in the mafic granulites and garnet + sillimanite + plagioclase + quartz + biotite in pelitic gneisses, with P-T conditions estimated at 0.84-0.87 GPa and 800-850°C. The post-peak assemblage is characterized by garnet + quartz symplectic coronas in mafic granulites and kyanite replacing sillimanite in the pelitic gneisses, which probably occurred at ∼0.85 GPa and 760°C. These mineral assemblages and their P-T estimates define an anticlockwise P-T path involving nearly isobaric cooling, reflecting an origin related to the intrusion and underplating of large amounts of mantle-derived magmas, which are considered to have been related to the interaction of upwelling mantle plumes with the lithosphere in the Eastern block of the North China craton in the Late Archean.en_US
dc.languageengen_US
dc.publisherTaylor & Francis Inc. The Journal's web site is located at http://www.tandf.co.uk/journals/TIGRen_US
dc.relation.ispartofInternational Geology Reviewen_US
dc.titleMetamorphic P-T path of the Southern Jilin complex: Implicatiions for tectonic evolution of the Eastern Block of the North China Cratonen_US
dc.typeArticleen_US
dc.identifier.emailZhao, G: gzhao@hkucc.hku.hken_US
dc.identifier.authorityZhao, G=rp00842en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0347300602en_US
dc.identifier.hkuros91141-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0347300602&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume45en_US
dc.identifier.issue11en_US
dc.identifier.spage1029en_US
dc.identifier.epage1043en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridGe, W=7103160312en_US
dc.identifier.scopusauthoridZhao, G=7403296321en_US
dc.identifier.scopusauthoridSun, D=7403969024en_US
dc.identifier.scopusauthoridWu, F=40561925600en_US
dc.identifier.scopusauthoridLin, Q=8306303800en_US

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