论文部分内容阅读
研究人员在汤加弧前区首次发现大洋绿帘岩。绿帘岩为金属衰竭岩 ,所含绿帘石和石英比例几乎相等 ,缺乏原始火成结构。绿帘岩被认为是在大洋成矿热液系统底部上升流带形成的。交代作用使绿帘岩取代玄武质和斜长花岗质原岩。绿帘岩是在与许多绿帘岩为基质形成于上俯冲带的蛇绿岩?
Researchers found the oceanic emerald for the first time in the foreland area of Tonga. Green Cu Yan for the metal depleted rock, containing almost equal proportions of epidote and quartz, the lack of the original structure of the fire. Glauberite is believed to be formed by updrafts at the base of oceanic hydrothermal fluid systems. Interpretation of the role of the green curtain instead of basaltic and plagioclase granitic protolith. Are green-blind rocks formed in the upper subduction zone with many green-blind rocks as ophiolite?