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Article: A recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites

TitleA recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulites
Authors
Wu, CMZhao, GC
KeywordsApplication
Calibration
Garnet
Geobarometer
Geothermometer
Olivine
Plagioclaseassemblage
Issue Date2007
PublisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0263-4929
Citation
Journal Of Metamorphic Geology, 2007, v. 25 n. 5, p. 497-505 How to Cite?
DOI: http://dx.doi.org/10.1111/j.1525-1314.2007.00706.x
AbstractThe garnet-olivine Fe-Mg exchange geothermometer and the garnet-olivine-plagioclase geobarometer have been simultaneously calibrated using reversed experimental data based on the model reactions 3Fe2SiO4 + 2Mg3Al2 Si3O12 = 3Mg2SiO4 + 2Fe3Al2Si3O12 and 3Fe2SiO4 + 3CaAl2Si2 O8 = 2Fe3Al2Si3O12 + Ca3Al2Si3O12 between 900 and 1500 °C at 9.1-95.0 kbar and between 4.7 and 7.0 kbar at 750-1050 °C, respectively. The resulting garnet-olivine thermometer reproduces experimental temperatures mostly within ±75 °C and the garnet-olivine-plagioclase barometer reproduces experimental pressures well within ±0.19 kbar. These new thermobarometers use the same garnet and olivine activity models and are thermodynamically consistent. Application of these thermobarometers to garnet peridotites from mantle xenoliths, orogenic garnet peridotites over the world and the Adirondack olivine-bearing metagabbros yielded reasonable P-T results. The present garnet-olivine thermometer can be used to measure medium-high-grade to ultrahigh-grade, low-pressure to ultrahigh-high-pressure garnet peridotites and metagabbros, whereas the garnet-olivine-plagioclase barometer has limited application to garnet-olivine-plagioclase-bearing granulites. © 2007 Blackwell Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/72810
ISSN
0263-4929
2023 Impact Factor: 3.5
2023 SCImago Journal Rankings: 1.646
ISI Accession Number ID
WOS:000247345900001
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorWu, CMen_HK
dc.contributor.authorZhao, GCen_HK
dc.date.accessioned2010-09-06T06:45:19Z-
dc.date.available2010-09-06T06:45:19Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Metamorphic Geology, 2007, v. 25 n. 5, p. 497-505en_HK
dc.identifier.issn0263-4929en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72810-
dc.description.abstractThe garnet-olivine Fe-Mg exchange geothermometer and the garnet-olivine-plagioclase geobarometer have been simultaneously calibrated using reversed experimental data based on the model reactions 3Fe2SiO4 + 2Mg3Al2 Si3O12 = 3Mg2SiO4 + 2Fe3Al2Si3O12 and 3Fe2SiO4 + 3CaAl2Si2 O8 = 2Fe3Al2Si3O12 + Ca3Al2Si3O12 between 900 and 1500 °C at 9.1-95.0 kbar and between 4.7 and 7.0 kbar at 750-1050 °C, respectively. The resulting garnet-olivine thermometer reproduces experimental temperatures mostly within ±75 °C and the garnet-olivine-plagioclase barometer reproduces experimental pressures well within ±0.19 kbar. These new thermobarometers use the same garnet and olivine activity models and are thermodynamically consistent. Application of these thermobarometers to garnet peridotites from mantle xenoliths, orogenic garnet peridotites over the world and the Adirondack olivine-bearing metagabbros yielded reasonable P-T results. The present garnet-olivine thermometer can be used to measure medium-high-grade to ultrahigh-grade, low-pressure to ultrahigh-high-pressure garnet peridotites and metagabbros, whereas the garnet-olivine-plagioclase barometer has limited application to garnet-olivine-plagioclase-bearing granulites. © 2007 Blackwell Publishing Ltd.en_HK
dc.languageengen_HK
dc.publisherWiley-Blackwell Publishing Ltd. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0263-4929en_HK
dc.relation.ispartofJournal of Metamorphic Geologyen_HK
dc.rightsThe definitive version is available at www3.interscience.wiley.comen_HK
dc.subjectApplicationen_HK
dc.subjectCalibrationen_HK
dc.subjectGarneten_HK
dc.subjectGeobarometeren_HK
dc.subjectGeothermometeren_HK
dc.subjectOlivineen_HK
dc.subjectPlagioclaseassemblageen_HK
dc.titleA recalibration of the garnet-olivine geothermometer and a new geobarometer for garnet peridotites and garnet-olivine-plagioclase-bearing granulitesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0263-4929&volume=25&issue=5&spage=497–505&epage=&date=2007&atitle=A+recalibration+of+the+garnet-olivine+geothermometer+and+a+new+geobarometer+for+garnet+peridotites+and+garnet-olivine-plagioclase-bearing+granulitesen_HK
dc.identifier.emailZhao, GC:gzhao@hkucc.hku.hken_HK
dc.identifier.authorityZhao, GC=rp00842en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1111/j.1525-1314.2007.00706.xen_HK
dc.identifier.scopuseid_2-s2.0-34250757711en_HK
dc.identifier.hkuros128404en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34250757711&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume25en_HK
dc.identifier.issue5en_HK
dc.identifier.spage497en_HK
dc.identifier.epage505en_HK
dc.identifier.isiWOS:000247345900001-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWu, CM=37046380900en_HK
dc.identifier.scopusauthoridZhao, GC=7403296321en_HK
dc.identifier.citeulike1403503-
dc.identifier.issnl0263-4929-

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