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- W2391314922 abstract "The internal textures and trace elements abundances of zircons from granites and pegmatites in Koktokay region are determined by cathodoluminescence(CL),backscattered electron(BSE) and laser ablation inductively coupled plasma mass spectrometry(LA-ICPMS) respectively.Characteristics of oscillatory zoning,high Th/U ratios and chondrite-normalized REE pattern of a steeply-rising slope from the LREE to the HREE with the obviously positive Ce anomaly and negative Eu anomaly,indicate that the zircons in the granite are of magmatic genesis,while the zircons from pegmatite(KP-08-11) are resulted from hydrothermal activity.The zircons from pegmatite show internally textureless in CL images,and enrich in REE,especially rich in LREE relative to magmatic zircons from granites.For example,zircons from pegmatite(KP-08-11) have flatter light-REE patterns and smaller Ce positive anomalies,and lower Th/U ratios(Th/U= 0.01~0.13 vs 0.16~0.99 for magmatic zircons);zircons from pegmatite(KP-08-11) could be directly crystallized from zircon-saturated U-rich and Th-poor hydrothermal fluid.The zircons from pegmatite(KP3-08-1) are of metamorphic origin and recrystallization is developed in these zircon grains.It is considered that the zircons from pegmatite(KP3-08-1) inherited the coexisting melt REE pattern." @default.
- W2391314922 created "2016-06-24" @default.
- W2391314922 creator A5067277942 @default.
- W2391314922 date "2012-01-01" @default.
- W2391314922 modified "2023-09-28" @default.
- W2391314922 title "CHARACTERISTICS OF ZIRCON CATHODOLUMINESCENCE AND TRACE ELEMENTS OF GRANITE AND PEGMATITE FROM ALTAI MOUNTAINS,NORTHWEST CHINA" @default.
- W2391314922 hasPublicationYear "2012" @default.
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