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地球学报 2012
特提斯喜马拉雅多重基性岩浆事件:追溯新特提斯洋的生存时限Keywords: TethyanHimalaya,Neo-Tethys,India-Eurasiacollision,MaficMagmatism Abstract: Processesaccompaniedthebreakupofcontinents,spreadingofoceanfloorandcontinent-oceantransi-tioncouldtriggerlargescalemeltingofthemantlebeneaththecontinentaswellastheocean,andpro-ducemaficmagmaswithdistinctgeochemicalcharac-teristics.Suchrocksprovideusanimportantrecordforunravelingthenatureandthetimeofdeeptectonicandmagmaticprocessesduringthetectonicevolutionoflarge-scaleorogenicbelts,suchastheHimalayanorogenicbelt.AsanintegratedpartoftheHimalaya,theTethyanHimalayaconsistsofwell-developedearlyPaleozoictoCenozoicsedimentsandisnotedforde-velopmentofspectacularsemi-continuous,thousandkilometerslonggneiss(orgranitic)domes.Ithaspre-servedcriticalrecordstoaddressthenatureofdefor-mation,magmatism,andmetamorphismassociatedwiththeopening,spreading,anddemiseoftheNeo-TethyanOceanandthefinalcontinentalcollisionbetweentheIndianandtheEurasianPlateattheearlyCenozoictime.Inaddition,italsocouldbeatype-exampletoaddressanumberoffirst-orderissueswithregardtothetectonicdynamicsofpassiveconti-nentalmarginduringtheWilson-cycle.
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