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Article: Buffering of metamorphic reaction temperature by metamorphic fluids in mayuan group, northern fujian province
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TitleBuffering of metamorphic reaction temperature by metamorphic fluids in mayuan group, northern fujian province
 
AuthorsZhao, G1
Sun, D1
He, T1
 
KeywordsBuffering
Mayuan Group
Metamorphic Fluids
Metamorphic Reaction Temperature
 
Issue Date1996
 
PublisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspx
 
CitationActa Petrologica Sinica, 1996, v. 12 n. 1, p. X5-69 [How to Cite?]
 
AbstractMetamorphic rocks in Mayuan Group in northern Fujian Province are outcropped in the form of Barrow belts from chlorite, biotite, garnet, staurolite, kyanite to sillimanite zones. The calculations - from geothermometer indicate that the metamorphic temperature of kyanite zone (470°C- 500°C) is obviously lower than that of garnet zone and staurolite zone. It means that kyanite zone was formed before garnet zone and staurolite zone. This is evidently inconsistent with the traditional theory of metamorphic belts. Chemical equilibrium calculations of fluid composition and thermodynamical analysis of metamorphic reactions show that the lower metamorphic temperature of kyanite zone is resulted not from the effect of metamorphic pressure and retrogressive metamorphism but from the buffering of temperature of dehydration metamorphic reaction forming kyanite by fluids with lower XH2o. The buffered temperature range is up to 100°C-200°C. The paper discusses the buffering mechanism and buffering intensity from thermodynamics and emphasizes the important role of metamorphic fluids in the studies of metamorphic facies and metamorphic belts.
 
ISSN1000-0569
2013 Impact Factor: 1.224
2013 SCImago Journal Rankings: 0.806
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhao, G
 
dc.contributor.authorSun, D
 
dc.contributor.authorHe, T
 
dc.date.accessioned2012-06-26T06:15:33Z
 
dc.date.available2012-06-26T06:15:33Z
 
dc.date.issued1996
 
dc.description.abstractMetamorphic rocks in Mayuan Group in northern Fujian Province are outcropped in the form of Barrow belts from chlorite, biotite, garnet, staurolite, kyanite to sillimanite zones. The calculations - from geothermometer indicate that the metamorphic temperature of kyanite zone (470°C- 500°C) is obviously lower than that of garnet zone and staurolite zone. It means that kyanite zone was formed before garnet zone and staurolite zone. This is evidently inconsistent with the traditional theory of metamorphic belts. Chemical equilibrium calculations of fluid composition and thermodynamical analysis of metamorphic reactions show that the lower metamorphic temperature of kyanite zone is resulted not from the effect of metamorphic pressure and retrogressive metamorphism but from the buffering of temperature of dehydration metamorphic reaction forming kyanite by fluids with lower XH2o. The buffered temperature range is up to 100°C-200°C. The paper discusses the buffering mechanism and buffering intensity from thermodynamics and emphasizes the important role of metamorphic fluids in the studies of metamorphic facies and metamorphic belts.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationActa Petrologica Sinica, 1996, v. 12 n. 1, p. X5-69 [How to Cite?]
 
dc.identifier.epage69
 
dc.identifier.issn1000-0569
2013 Impact Factor: 1.224
2013 SCImago Journal Rankings: 0.806
 
dc.identifier.issue1
 
dc.identifier.scopuseid_2-s2.0-0030465647
 
dc.identifier.spageX5
 
dc.identifier.urihttp://hdl.handle.net/10722/150988
 
dc.identifier.volume12
 
dc.languageeng
 
dc.publisherChinese Academy of Sciences, Institute of Geology and Geophysics. The Journal's web site is located at http://www.ysxb.ac.cn/ysxb/ch/index.aspx
 
dc.publisher.placeChina
 
dc.relation.ispartofActa Petrologica Sinica
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBuffering
 
dc.subjectMayuan Group
 
dc.subjectMetamorphic Fluids
 
dc.subjectMetamorphic Reaction Temperature
 
dc.titleBuffering of metamorphic reaction temperature by metamorphic fluids in mayuan group, northern fujian province
 
dc.typeArticle
 
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<contributor.author>He, T</contributor.author>
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<description.abstract>Metamorphic rocks in Mayuan Group in northern Fujian Province are outcropped in the form of Barrow belts from chlorite, biotite, garnet, staurolite, kyanite to sillimanite zones. The calculations - from geothermometer indicate that the metamorphic temperature of kyanite zone (470&#176;C- 500&#176;C) is obviously lower than that of garnet zone and staurolite zone. It means that kyanite zone was formed before garnet zone and staurolite zone. This is evidently inconsistent with the traditional theory of metamorphic belts. Chemical equilibrium calculations of fluid composition and thermodynamical analysis of metamorphic reactions show that the lower metamorphic temperature of kyanite zone is resulted not from the effect of metamorphic pressure and retrogressive metamorphism but from the buffering of temperature of dehydration metamorphic reaction forming kyanite by fluids with lower XH2o. The buffered temperature range is up to 100&#176;C-200&#176;C. The paper discusses the buffering mechanism and buffering intensity from thermodynamics and emphasizes the important role of metamorphic fluids in the studies of metamorphic facies and metamorphic belts.</description.abstract>
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Author Affiliations
  1. Changsha University of Science and Technology