| 康定变质侵入岩的年代学及岩石地球化学特征 |
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| 关键词:Kangding complex trace elements SHRIMP dating magmatic arc |
| 基金项目:本文为国家白然科学基金项目（批准号:40173007,40234052 )资助。 |
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| Geochronological and Geochemical Characteristics of Kangding Metamorphosed Intrusions |
| The Kangding metamorphosed intrusions are mainly composed of quartz diorite-tonalite -granodiorite. The ages of igneous zircons from the complex range from 721 to 773 Ma, which shows the intrusive activity during Neoproteronoic. The oldest age obtained from the intrusions is 2468 Ma, implying the involvement of materials from Yangtze craton basement. The ages of 99~531 Ma produced from zircon rims may reflect later metamorphic events. The complex shows a calc-alkaline differential trend in major elements, and the trace elements exhibit typical geochernical features of the island arc setting. |
| LI Zhihong,LUO Zhaohua,CHEN Yuelong,ZHAQ Junxiang.2005.Geochronological and Geochemical Characteristics of Kangding Metamorphosed Intrusions[J].Acta Geoscientica Sinica,26(z1):87-89. |
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