THE OXYGEN FUGACITIES OF CENOZOIC BASALTIC MAGMAS AND THEIR ENCLOSED MANTLE XENOLITHS
THE OXYGEN FUGACITIES OF CENOZOIC BASALTIC MAGMAS AND THEIR ENCLOSED MANTLE XENOLITHS
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作者：
E. Molan
与温度和压力类似，地球翻转地幔中的氧逸度也是控制许多地幔过程的关键参数。利用实验标定方程计算了中国东部具有代表性的新生代基性岩石及其包体尖晶石二辉橄榄岩的氧逸度，结果表明，尖晶石二辉橄榄岩的氧逸度变化范围很小，平均值为fmq+0。相反，新生代玄武岩的氧逸度变化范围很大，平均值在Fmq+0之间。讨论了上述计算结果的意义以及地幔流体熔体与地幔岩石之间的相互作用。
Oxygen fugacity in the Earth's tipper mantle.similar to temperature and pressure,also is a key important parameter in control ling many mantle processes.The calculations of oxygen fugacities of representative Cenozoic hasal is and their enclosed spinel lherzolite in eastern China using experimentally calibrated equations show that the oxygen fugacities of spinel lherzolite vary in a very small range with an average value of FMQ+0. 0,and that,on the contrary, the oxygen fugacities Cenozoic basalts vary in a very large range, with average values from FMQ + 0. 6 for the Shanzhi area to FMQ + 3. 3 for Chagbaishan area both in north eastern China.Discussions have been made on the meaningness of the results of above calculations and the interactions between mantle fi fluids melts.and mantle rocks.