摘要
在西准噶尔达拉布特蛇绿岩中,特别是其中作为上地幔部分熔融残留相的变质橄榄岩中,具有异常高的硼含量。研究表明,变质橄榄岩中硼的含量与蛇纹石化程度有关;同时,硼在变质橄榄岩中的空间分布又受滑石菱镁岩的制约。这就是变质橄榄岩在蛇纹石化过程中发生了硼的带入,之后的滑石碳酸盐化又使硼发生了活化和再分配。
In the Dalabute ophiolite,especially in the metamorphic olivinite as the remanent phaseof partial melting of the upper mantle are found abnormally high boron contents.Studieshave shown that the content of boron in the metamorphic olivinite is closely related to the deg-ree of serpentinization.In the mean time the spacial distribution of boron in the metamor-phic olivinite is also controlled by listvenite.It is believed that boron was incorporated into themetamorphic olivinite during serpentinization,followed by talc carbonatization which wouldlead to remobilization and re-distribution of boron.
出处
《地球化学》
CAS
CSCD
北大核心
1993年第4期379-388,共10页
Geochimica
