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东昆仑造山带白日其利镁铁质岩墙群以苏长辉长岩为主,含少量含斑辉绿岩,LA-ICP-MS锆石U-Pb年代学指示该套岩墙群结晶侵位年龄为251±2Ma。岩石具有中等的Mg# (31~50)和高铝 (16.25%~19.49%)的特征,整体属于钙碱性玄武岩系列岩石 (Na2O+K2O=2.75%~3.51%; FeOT/MgO=1.02~2.22);微量和稀土元素方面,岩石具有较低的稀土总量、轻稀土轻微...
Effect of organic matrices on the determination of the trace element chemistry (Mg, Sr, Mg/Ca, Sr/Ca) of aragonitic bivalve shells (Arctica islandica) —Comparison of ICP-OES and LA-ICP-MS data
trace elements bivalve shell organics LA-ICP-MS ICP-OES sclerochronology
2017/8/9
The element chemistry of biogenic carbonates can provide important data on past environments. However, the Sr/Ca and Mg/Ca ratios as well as the Mg and Sr concentrations of biological carbonates, espe...