Geochemical and Os isotopic characteristics of a fresh harzburgite in the Hayachine-Miyamori ophiolite : Evidence for melting under influx of carbonate-rich silicate melt in an infant arc environment
Geochemical and Os isotopic characteristics of a fresh harzburgite in the Hayachine-Miyamori ophiolite : Evidence for melting under influx of carbonate-rich silicate melt in an infant arc environment
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Hayachine-Miyamori 蛇绿岩中新鲜方辉橄榄岩的地球化学和锇同位素特征：在婴儿弧环境中富含碳酸盐的硅酸盐熔体流入下熔化的证据
DOI：
10.2465/jmps.120624
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发表时间：
2012
影响因子：
0.7
通讯作者：
K. Ozawa
中科院分区：
文献类型：
--
作者：
M. Yoshikawa;Katsuhiko Suzuki;T. Shibata;K. Ozawa
早-宫森蛇绿岩中一个难熔方辉橄榄岩的Os同位素组成（Os/Os = 0.1235）为亚玄武质，表明Re长期亏损。这种非放射成因的Os同位素特征与俯冲开始时氧化程度较低的条件相一致。的主要和微量元素的特点，其岩相学和相对较高的单斜辉石模态丰度的方辉橄榄岩，建议在弧设置的熔融提取过程中的富碳酸盐的硅酸盐熔体的参与。
Os isotopic composition (Os/Os = 0.1235) of a refractory harzburgite in the Hayachine-Miyamori ophiolite is subchondritic, indicating the long-term depletion of Re. Such an unradiogenic Os isotopic signature is consistent with the less oxidized condition at subduction initiation. The major and trace element characteristics of the harzburgite, together with its petrography and relatively high modal abundance of clinopyroxene, suggest an involvement of a carbonate-rich silicate melt during melt extraction in arc setting.
影响因子：
5.8
作者：
Katsuhiko Suzuki;R. Senda;K. Shimizu
通讯作者：
Katsuhiko Suzuki;R. Senda;K. Shimizu