摘要
碳酸盐熔岩对探究地幔组成、演化,与碳酸盐有关的成岩成矿,碳的化学循环都有重要意义。通过对某些碳酸盐熔岩的主要物质成分、代表性碳酸盐矿物的热稳定和熔点、二氧化碳与氧逸度的关系、火山熔岩温度与火山气中氢和二氧化碳浓度的关系、碳酸盐熔浆的化学障、稀土矿床矿物流体包裹体均一温度的研讨,认为采用熔点低热稳定性高、出现在地表的碱金属碳酸盐熔岩来推定熔点高热稳定性低的碱土金属、过渡元素碳酸盐熔岩在地表也广泛分布是不妥的。
Carbonate lava has great significance for research into the composition ＆ evolution of Earth＇ s mantle, carbonaterock ＆ ore and the chemical cyclys of carbon. Through the research of main material composition of some carbonate lava, thermal stability and melting point of the representative of carbonate minerals, carbonate lava of chemical barrier andhomogenization temperature of fluid inclusions, the authors consider it is inappropriate for presuming low melting of high thermal stability of alkali metal, transition element carbonate lava is widely distributed on the surface is inappropriate.
出处
《资源环境与工程》
2012年第3期293-296,共4页
Resources Environment & Engineering
关键词
碳酸盐熔岩
热稳定性
化学障
成岩温度
carbonate lava
thermal stability
chemical barrier
rock-forming temperature
