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Isotopic determination of U, Pu and Cs in environmental waters following the Fukushima Daiichi Nuclear Power Plant accident
uranium plutonium caesium seawater riverine water Fukushima
2017/4/11
Concentrations of the radionuclides, U, Pu, and Cs were measured in water samples (10–20 L) to study analyte dispersion
and migration following the Fukushima Daiichi Nuclear Power Plant (FDNPP) accid...
Distribution of Pu isotopes in marine sediments in the Pacific 30 km off Fukushima after the Fukushima Daiichi nuclear power plant accident
Fukushima plutonium isotopes western North Pacific marine sediments SF-ICP-MS
2017/4/11
The Fukushima Dai-ichi Nuclear Power Plant (DNPP) accident has caused serious contamination of the marine environment
from atmospheric fallout deposition and the direct discharges of highly radioacti...
华北克拉通古元古代中期伸展体制新证据:鞍山-弓长岭地区变质辉长岩的锆石SHRIM PU-Pb定年和全岩地球化学
辉长岩 古元古代 伸展体制 SHRIMP U-Pb定年 鞍山 华北克拉通
2014/1/16
本文报道了华北克拉通鞍山-弓长岭地区古元古代中期变质辉长岩的锆石定年结果和地球化学组成。根据地球化学组成特征,可把变质辉长岩划分为两种类型。类型1变质辉长岩低MgO高FeOT,稀土总量高(TREE=107.5×10-6~114.0×10-6),轻重稀土分离不强((La/Yb)N=2.6~2.7),高场强元素Nb、P、Ti无明显亏损,相容元素Cr强烈亏损。类型2变质辉长岩高SiO2低FeOT,轻重稀...
越南西北部Pu Sam Cap高钾碱性岩LA-ICPMS锆石U-Pb年龄与Hf同位素组成及其区域构造意义
Pu Sam Cap高钾碱性岩 锆石U-Pb年龄 Hf同位素 地幔源区 哀牢山-红河剪切带 越南西北部
2014/1/20
越南西北部Pu Sam Cap高钾碱性杂岩位于哀牢山剪切带南段西侧,由粗面岩、煌斑岩、碱性正长岩与碱性花岗岩组成。其中粗面岩不整合于晚白垩世陆相沉积岩之上,碱性侵入岩侵入到三叠纪陆源沉积岩、侏罗纪流纹岩及40~35Ma含角闪石二长岩-花岗岩中。该杂岩的岩石具有低TiO2(<0.8%)、P2O5(<0.64%)和FeO*(<7.74%),高Na2O(1.41%~4.5%)和K2O(5.22%~9.4...