Amphibole—Bearing Peridotite Xenoliths from Nushan,Anhui Province：Evidence for Melt Percolation Process in the Upper mantle and Lithospheric uplift-中国期刊网

摘要 ThespinelperidotitexenolithsofGroupIinQuaternarybasanitesfromNushan,Anhuiprovince,canbeclassifiedastwosuites:ahydroussuitecharacterizedbytheubiquitousoccurrenceof(Ti-)pargasiteandananhydroussuite.Thenineralchemistryrevealsthattheanhydroussuiteandoneassociatedphlogopite-bearinglherzoliteareequilibratedundertemperatureconditionsof1000-1100℃,whereasamplhibole-bearingperidotitesdisplaydistinctdisequilibrumfeatures,indicatingpartialreequilibrationfrom1050to850℃andlocallydownto750℃.Theamplhbole-bearingperidotiteswereprobablytheuppermostpartofthehightemperatureanhydroussuitewhichwasmodallymodifedbyfractionatingH2O-richmetasomaticagentduringregionalupwelling.Thisrelativelyrecentlithosphericuplifteventfollowedanolderuplifteventrecognizedfrompyroxeneunmixingofdomainsinlocalequilibrium,aswellasthedominantdeformationtextureintheanhydroussuite.ThefirstthermaldisturbancecanbelinkedwiththeregionalextensionandwidespreadbasalticvolcanisminJiangsu-AnhuiprovincessinceEarlyTertiaryandtheformationofthenearbySubei(NorthJiangsu)fault-depressionbasinduringtheEocene,whilethesecondeventinassociationwiththeformationofamphibolesprobablyindicatesthecontinuationbutdiminutionofupwaredmantlefluxsinceNeogeneinresponsetothechangeintectonicregimeforeasternchina.

1Xueyi Xu;Yuehua Huang;Linqi Xia;Zuchun Xia. Phlogopite-Amphibole-Pyroxenite Xenoliths in Langao,Shaanxi Province,China:evidence for Mantle Metasomatism.地球化学,1997-04.
2ShiLanbin LinChuanyong ChenXiaode. Thermal Structure and Rheology of the Upper Mantle Derived from Mantle Xenoliths from Gansu Province, Western China.地震学,2004-03.
3. On the Relationship between Mantle Metasomatism and Partial Melting-Evidence from Mantlederived Lherzolite Xenoliths from Nueshan,China.地球化学,1993-04.
4. Thermal Process in the Crust and Upper Mantle in Xingtai-Shulu area of Hebei Province,China.地震学,1995-03.
5黄建华;常筱华;傅容珊. Upper　mantle　flow　beneath　the　Northwest　of　China　and　its　lithospheric　dynamics.地震学,1996-02.
6. Deep Tectonophysical Process of the Uplift of the Northern Qinghai--Tibet Plateau --Evidence from the Integrated Geological--Geophysical Profile from Golmud to the Tanggula Mountains, Qinghai Province, China.地质学,1997-01.
7KONG Hua XI Xiao-shuang JIN Zhen-min HUANG De-zhi. GEOCHEMISTRY OF BASALT AND XENOLITHS AND ITS DEEP PROCESS IN DAOXIAN COUNTY,HUNAN PROVINCE.地质学,2001-01.
8Zhaochong Zhang;Jingwen Mao;Fusheng Wang;Yanli Hao;John J. Mahoney. Mantle plume activity and melting conditions： Evidence from olivines in picritic-komatiitic rocks from the Emeishan Large Igneous Province, southwestern China.地质学,2005-03.
9Zhen Guo;Yuliang Cao;Xianguang Wang;Y. John Chen;Jieyuan Ning;Weiguang He;Youcai Tang;Yongge Feng. Crust and upper mantle structures beneath Northeast China from receiver function studies.地震学,2014-03.
10Yawei Zhang. National Lottery Participation and Expenditure： Evidence from Hainan Province in China.政治经济学,2006-07.

Amphibole—Bearing Peridotite Xenoliths from Nushan,Anhui Province：Evidence for Melt Percolation Process in the Upper mantle and Lithospheric uplift

来源期刊

相关推荐

同分类资源更多

相关关键词

Amphibole—Bearing Peridotite Xenoliths from Nushan,Anhui Province：Evidence for Melt Percolation Process in the Upper mantle and Lithospheric uplift

来源期刊

相关推荐

同分类资源 更多

相关关键词

同分类资源更多