首页|期刊导航|中国地球化学学报(英文版)|Experiments on Dehydration-Melting of the Khondalite Series in the Northern Segment of Helan Mountain, Ⅲ-The Evolution of Oxygen, Water, and Hydrogen Fugacities
中国地球化学学报(英文版)2001，Vol.20Issue(4)：351-356,6.
Experiments on Dehydration-Melting of the Khondalite Series in the Northern Segment of Helan Mountain, Ⅲ-The Evolution of Oxygen, Water, and Hydrogen Fugacities
Experiments on Dehydration-Melting of the Khondalite Series in the Northern Segment of Helan Mountain, Ⅲ-The Evolution of Oxygen, Water, and Hydrogen Fugacities
摘要
Abstract
Based on the experiments on dehydration-melting of solid samples of Al-rich gneiss (H029) and biotite granulitite (H013), the fugacities of O2, H2O and H2 have been calculat ed. It is recognized that the fugacities of O2, H2O and H2 vary regularly, but the fugacity of H2O shows a tendency of abrupt increasing at about 700℃ and 800℃. According to the above fact, the melting mechanism of biotite can be well documented. Under relatively low tempera tures ( ＜ 750℃ ), part of the water can be liberated and induce plagioclase to melt, which may mark the beginning of migmatization. At high temperatures ( ＞800℃ ), biotite can be dissoci ated and a larger amount of water can be released, which would result in a bigger degree of melting, hence leading to the formation of granitic magma.关键词
khondalite series/dehydration melting/fugacityKey words
khondalite series/dehydration melting/fugacity分类
天文与地球科学引用本文复制引用
刘建忠,卢良兆,谢鸿森,刘喜山..Experiments on Dehydration-Melting of the Khondalite Series in the Northern Segment of Helan Mountain, Ⅲ-The Evolution of Oxygen, Water, and Hydrogen Fugacities[J].中国地球化学学报(英文版),2001,20(4):351-356,6.基金项目
This study was granted by the Chinese Academy of Sciences (Grant No. KZCX1-07). （Grant No. KZCX1-07）
