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新元古代地幔超柱活动、超大陆聚合和裂解、裂谷岩浆作用与雪球地球事件之间是否具有成因联系, 是当前国际地球科学研究的前沿和热点问题[1~4]. 而确定同时期岩浆岩是否含有地表水信息并形成低18O岩浆, 则是证明地球内部与外部之间在能量和物质上是否发生过相互作用的关键. 先
Neoproterozoic mantle superpillar activity, supercontinent polymerisation and pyrolysis, and whether or not there is a causal relationship between the magmatic action of the rift and the snowball earth event are the frontiers and hot issues in the current international geosciences [1 ~ 4] Whether or not magmatic rocks contain surface water information and form low-magmatic rocks is the key to proving the energy and material interaction between the interior and the exterior of Earth