RODINGITIZATION OF IRANIAN BASIC ROCKS: A NEW INTERPRETATION
RODINGITIZATION OF IRANIAN BASIC ROCKS: A NEW INTERPRETATION
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伊朗基性岩的罗丁化：新的解释
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
M. Sabzehei
中科院分区：
文献类型：
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作者：
M. Sabzehei
介绍了伊朗蛇绿岩的成矿基性岩的矿物共生，并讨论了母岩超基性岩蛇纹石化过程中产生的含钙流体与基性岩岩浆岩矿物之间的交代反应导致了成矿的共生。结果表明，与蛇纹岩平衡的富Ca +2水溶液具有较高的Ca +2化学势，与基性岩岩浆岩矿物发生化学反应，降低了体系自由能，出现了新的矿物共生现象，使基性岩全部或部分转化为岩质岩。提出了蛇纹石化与岩石化相互作用的反馈机制。
Mineral paragenesis of rodingitized basic rocks of Iranian ophiolites are presented and metasomatic reactions between Ca +2 bearing aqueous fluids issued during serpentinization of host ultramafic rock – with magmatic minerals of basic rocks leading to present paragenesis of rodingites are discussed. It is concluded that Ca +2 rich aqueous fluid in equilibrium with serpentinite has high Ca +2 chemical potential to react with magmatic minerals of basic dykes resulting in lowering the free energy of system, appearance of a new mineral paragenesis and total or partial conversion of basic dykes to rodingites. A feedback mechanism is proposed to account for inter-relationship of serpentinization and rodingitization.