Calcium and Iron calibration for chemostratography of sediment core JC138-38GC@en

The chemostratigraphy of sediment core JC138-38GC was analysed with the ITRAX core-scanning X-ray fluorescence system (Cox Analytical Systems) at BOSCORF. The ITRAX produced a digital X-radiograph for each core, and then returned to the start point and underwent XRF analyses for the elements in the range of molar weight from Si to U. The instrument was operated at a voltage of 30 kV, a current of 30 mA, a count time of 30 s with a 3kW Mo X-ray tube.本研究依托BOSCORF平台，采用考克斯分析系统公司（Cox Analytical Systems）生产的ITRAX岩芯扫描X射线荧光光谱系统，对沉积岩芯JC138-38GC开展化学地层学（chemostratigraphy）分析。该系统会为每根岩芯生成数字化X射线影像，随后返回初始扫描点位，并针对摩尔质量跨度从硅（Si）至铀（U）的元素开展X射线荧光（X-ray fluorescence, XRF）分析。仪器搭载3kW钼（Mo）X射线管，工作参数设置为：电压30 kV、电流30 mA、计数时长30 s。