Genesis of the Madang Cenozoic sodic alkaline basalt in the eastern margin of the Tibetan Plateau an

• 作 者: LAI ShaoCong ZHANG GuoWei LI Y
• 机 构: StateKeyLaboratoryofContinentalDynamics
• 出 处: 中国科学：地球科学英文版
• 发表日期: 2007年z2期
• 关键词: alkaline basalt source region characteristics CONTINENTAL dynamism Cenozoic e
• 基金项目: Supported jointly by the National Natural Science Foundation of China (Grant Nos. 40572050 and 40234041) and the Teaching and Research Award Program for Outstanding Young Teachers in Higher Education

The Madang Cenozoic sodic alkaline basalt occurred in the eastern margin of the Tibetan Plateau, where is a key tectonic transform region of Tibet, North China, and Yangtze blocks. The basalts are characterized by the variation in SiO2=42%―51%, Na2O/K2O&g