Retrograded eclogites in the Archaean North China Craton and their geological implication

• 作 者: 翟明国 郭敬辉 李江海 李永刚 阎月华 张雯华
• 机 构: Institute of Geology, Chinese Academy of Sciences, Beijing 100029, China,Institute of Geology, Chine
• 出 处: Chinese Science Bulletin
• 发表日期: 1996年04期
• 关键词: metamorphic crust continental implication mantle garnet quartz basement facies g

High-pressure metamorphic eclogite, as a window of study for depth level of lowermost crust and mantle, has an important indicating significance to composition, property and accretion of continental lower crust. Archaean high-pressure metamorphic rocks of eclogite facies are very rare. According to this fact, it is suggested that there is a difference in principle between the mechanisms of formation and evolution of early Precambrian and Phanerozoic continental crust. Smelov and Beryozkin first reported that some basic

High-pressure metamorphic eclogite, as a window of study for depth level of lowermost crust and mantle, has an important indicating significance to composition, property and accretion of continental lower crust. Archaean high-pressure metamorphic rocks of eclogite facies are very rare. to this fact, it is suggested that there is a difference in principle between the mechanisms of formation and evolution of early Precambrian and Phanerozoic continental crust. Smelov and Beryozkin first reported that some basic