Mechanisms of Isotopic Equilibration During Partial Melting: An Experimental Test of the Behaviour of Sr
Mechanisms of Isotopic Equilibration During Partial Melting: An Experimental Test of the Behaviour of Sr
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DOI：
10.1180/minmag.1994.58a.1.193
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发表时间：
1994
影响因子：
2.7
通讯作者：
T. Hammouda
中科院分区：
文献类型：
--
作者：
T. Hammouda
人们普遍承认，部分熔融过程中达到了同位素平衡，并且产生的熔体的同位素组成与烃源岩的同位素组成相同（例如，Faure 和 Powell，1972；Hofmann 和 Hart，1978）。为了研究同位素平衡的机制和动力学，我们建立了一个实验程序，测试长石云母源矿物组合模型部分熔融初始阶段 Sr 的行为。具有对比 Sr 浓度和同位素组成的矿物对被部分熔化，并用 SIMS 分析产品（包括熔体淬火为玻璃）。
It is generally admitted that isotopic equilibrium is attained during partial melting and that the isotopic composition of melt produced is identical to that of the source rock (e.g. Faure and Powell, 1972; Hofmann and Hart, 1978). In order to investigate mechanisms and kinetics of isotopic equilibration, we have set up an experimental program testing the behaviour of Sr during the initial stages of partial melting of a model fe ldspar-mica source mineral assemblage. Mineral couples having contrasted Sr concentrations and isotopic compositions were partially melted and the products (including melt quenched as glass) analysed with SIMS.