| 中国东部新生代玄武岩中巨晶矿物的地球化学 |
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| 关键词:megacryst basalt geochemistry |
| 基金项目:国家自然科学基金 |
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| 摘要: |
| Geochemistry of Megacrysts in Cenozoic Basalts of Eastern China |
| Results of major ,REE and trace elements and Sr_Nd isotopes of amphibole and clinopyroxene megacrysts from Nushan,Hannuoba and Puning have been given.There are three types of CPX megacrysts in research areas: Al_augite,diopside and Fe_Na diopside.Hastingsite megacrysts from Puning are very rare in the world .CPX and amphibole megacrysts are crystallizic products of basaltic magma at mantle pressure.All of them are xenocrysts.Megacrysts represent cumulates of flow crystallization by basaltic magma .They have no genetic relatins with green xenoliths and probably represent the cognate with some of the black xenoliths. |
| CHEN Dao-gong,XIA Qun-ke,ZHI Xia-chen.1997.Geochemistry of Megacrysts in Cenozoic Basalts of Eastern China[J].Acta Geoscientica Sinica,18(3):299-305. |
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