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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Fe-Ti-enriched mafic rocks from south Andaman ophiolite suite: Implicationof late stage liquid immiscibility
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Fe-Ti-enriched mafic rocks from south Andaman ophiolite suite: Implicationof late stage liquid immiscibility

机译：南安达曼蛇绿岩组中富铁钛铁质镁铁质岩：晚期液相不溶性的含意

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摘要

Andaman ophiolite suite (AOS) is amongst one of the ophiolite complexes of the world, which comprises complete dismembered ophiolitic sequence. It consists of ultra-mafic and mafic cumulates, sheeted dykes, pillow lavas, felsic rocks (mainly plagiogranites), and sedimentaries, including ribbon chert, In the present communication, a mafic rock that is highly enriched in FeO-TiO2 and encountered in the ophiolites of south Andaman is presented. Fe-Ti-enriched mafic rock is not Set reported from the south AOS, Genetically this rock may be associated with leucocratic rocks of AOS because it is experimentally proved that Fe-enriched basaltic melt and plagiogranite melt can be generated by late stage liquid immiscibility. Similar to most of the other plagiogranite occurrences of the world, Andaman plagiogranites are also supposed to be endproducts of magmatic differentiation of a mafic magma. But the discovery of Fe-Ti-enriched mafic rocks supports liquid immiscibility process.
机译：安达曼蛇绿岩组（AOS）是世界上的蛇绿岩复合体之一，其中包括完整的肢解蛇纹石序列。它由超镁铁质和镁铁质堆积物，片状堤坝，枕状熔岩，长英质岩石（主要是斜长花岗岩）和沉积物（包括带状cher石）组成。在本通报中，镁铁质岩石富含FeO-TiO2，并在介绍了安达曼南部的蛇绿岩。尚未从南部AOS报道富集铁钛的镁铁质岩石，从遗传上讲，该岩石可能与AOS的白垩纪岩石有关，因为它已通过实验证明后期阶段的液体不混溶性可以生成富铁的玄武质熔岩和斜长花岗岩。与世界上大多数其他斜长花岗岩发生地相似，安达曼斜长花岗岩也被认为是镁铁质岩浆岩浆分化的终产物。但是富铁钛铁镁铁质岩石的发现支持了液体的不混溶过程。

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