典型文献
Petrogenesis and tectonic implications of Late Triassic granitoids in the Alananshan,East Kunlun belt:evidence from geochemistry,geochronology,and zircon Hf isotopic compositions
文献摘要：
The Qimantag in the East Kunlun Orogenic Belt has widespread Triassic magmatic rocks that have received scant attention,with an unresolved issue relating to its petrogenesis and geodynamics.In this paper,we used zir-con U-Pb-Hf isotopes and whole-rock geochemistry to trace the petrogenesis and tectonic settings of the moyite and monzogranite from the Qimantag Alananshan,East Kunlun.The moyite and monzogranite are silicic(SiO2-～69.9-76.41％),highly alkali(Na2O+K2O～7.29 to 8.96 wt.％),with Mg#about 10.4-30.34,indicative of a high-K calc-alkaline rock series.The rare earth element patterns diagram is right-leaning,with a negative Eu anomaly(δEu=0.31-0.68).They are enriched in Rb,K,and light rare earth elements but depleted in Nb,Ta,and Ti,with abundant amphibole,typical of I-type granites.U-Pb on zircon constrained the emplacement of the moyite at 223.9±2.6 Ma and monzogranite at 226.9±2.9 Ma.The εHf(t)values range from-2.8 to+0.1 except for one outlier value of-7.0,corresponding two-stage model age of 1249-1437 Ma.Our combined geochemical and isotopic results indicate that the moyite and monzogranite were derived from partial melting of the lower thicken crust with the contribution from the older basement mate-rials.These rocks formed in a post-collision setting that is transitional between compressive collision and extension orogeny.
文献关键词：
中图分类号：
作者姓名：
Zhen Xi;Huan Li;Safiyanu Muhammad Elatikpo;Guangming Gao;Decheng Ma
作者机构：
School of Municipal and Geomatics Engineering,Hunan City University,Yiyang 413000,China;School of Geosciences and Info-Physics,Central South University,Changsha 410083,China;Department of Geology,Ahmadu Bello University,Zaria,Nigeria;No.701 Geological Team,Xinjiang Nonferrous Geoexploration Bureau,Changji 831100,China
文献出处：
引用格式：
[1]Zhen Xi;Huan Li;Safiyanu Muhammad Elatikpo;Guangming Gao;Decheng Ma-.Petrogenesis and tectonic implications of Late Triassic granitoids in the Alananshan,East Kunlun belt:evidence from geochemistry,geochronology,and zircon Hf isotopic compositions)[J].地球化学学报（英文版）,2022(06):947-967
A类：
Alananshan,Qimantag,moyite,silicic,Mg#about,thicken
B类：
Petrogenesis,tectonic,implications,Late,Triassic,granitoids,East,Kunlun,belt,evidence,from,geochemistry,geochronology,zircon,Hf,isotopic,compositions,Orogenic,Belt,has,widespread,magmatic,rocks,that,have,received,scant,attention,unresolved,issue,relating,its,petrogenesis,geodynamics,In,this,paper,used,Pb,isotopes,whole,trace,settings,monzogranite,SiO2,highly,Na2O+K2O,wt,indicative,calc,alkaline,series,rare,earth,patterns,diagram,right,leaning,negative,Eu,anomaly,They,enriched,Rb,light,elements,depleted,Nb,Ta,Ti,abundant,amphibole,typical,type,granites,constrained,emplacement,Ma,values,range,to+0,except,one,outlier,corresponding,two,stage,model,Our,combined,geochemical,results,indicate,were,derived,partial,melting,lower,crust,contribution,older,basement,mate,rials,These,formed,post,collision,transitional,between,compressive,extension,orogeny
AB值：
0.567998
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