摘要
ConstraintsfromP-Tpseudosections(MnNCKFMASHsystem),foliationintersection/inflectionaxespreservedinporphyroblasts(FIAs),mineralassemblagesandtexturalrelationshipsforrockscontainingallthreeAl2SiO5polymorphsindicateakyanite→andalusite→sillimanitesequentialformationatdifferenttimesratherthanstablecoexistenceattheAl2SiO5triplepoint.AllthreeAl2SiO5polymorphsgrewintheChl,Bt,Ms,Grt,St,PlandCrdbearingOrdovicianClayholeSchistinBalcooma,northeasternAustraliaseparatelyalongaloopedP-T-t-Dpaththatswapsfromclockwisetoanticlockwiseinthetectono-metamorphichistoryoftheregion.KyanitegrewduringcrustalthickeninginanEarlySilurianOrogeniceventfollowedbydecompression/heating,andalusiteandfibroliticsillimanitegrowthduringEarlyDevonianexhumation.
出版日期
2012年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)