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Tracking Hadean processes in modern basalts with 142-Neodymium

机译:追踪现代玄武业的哈维尔工艺142钕

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AbstractThe short-livedSm146142Ndisotope system (t1/2=103?Ma) provides constraints on the timing and processes of terrestrial silicate fractionation during the early Hadean. Although some Archean terranes preserve variability in142Nd/144Nd, no anomalies have been resolved previously in young rocks. This study provides high precision142Nd/144Nd data on a suite of ocean island basalts from Samoa and Hawaii previously shown to have variable depletions in182W/184W that are inversely correlated with3He/4He ratios. Improved analytical techniques and multiple replicate analyses of Nd show a variation inμ
机译:<![cdata [ Abstract 短lived sm 146 142 nd 同位素系统( t < MML:MROW> 1 / 2 < / mml:mrow> = 103 ?ma )在哈维亚初期期间提供了对陆地硅酸盐分馏的时序和过程的约束。虽然某些Archean Terranes在 142> 142中的可变性 nd / 144 nd,但没有异常已经解决了以前在年轻的岩石中。本研究提供了高精度 142 nd / 144 sup> nd数据在海岛岛的套房上从Samoa和Hawaii之前显示在 182> 182中具有可变耗尽:182 w / 184 w与 3> 3 he / 4 他的比率。改进的分析技术和ND的多重复制分析显示了 μ

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