Hydroxyl in continental deep subduction zone: Evidence from UHP eclogites of the Dabie Mountains

被引:1
作者
HarryW.Green
机构
基金
中国国家自然科学基金;
关键词
UHP eclogite; hydroxyl; FTIR; quantitative analysis;
D O I
暂无
中图分类号
P596 [区域地球化学、景观地球化学];
学科分类号
070902 ;
摘要
Infrared spectra in the region of 3 000 to 4 000 cm-1 have been measured by an FTIR spectrometer on minerals in UHP eclogites from the Bixiling and Shuanghe areas, the Dabie Mountains. It is shown that omphacite is the most important hydrous mineral (100-200 μg/g) in UHP eclogites. Garnet and quartz contain virtually no H2O or OH. Accessory mineral rutile contains a significant amount of OH (>1 000 μg/g). Coesite gives no indication of the presence of OH but apparent H2O bands. The results have considerable implications for existing forms and contents of hydroxyl in the continental deep subduction zone, the eastern Dabie Mountains.
引用
收藏
页码:592 / 596
页数:5
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