Downcore variations of sedimentary detrital (238U/232Th) ratio of sediment co...
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Excess 231 Pa and 230 Th ( 231 Pa xs and 230 Th xs ) can be used to reconstruct past oceanic sedimentation ( 230 Th-normalized flux) and circulation changes (( 231 Pa/ 230 Th)...
过剩镤-231（²³¹Pa，文中记为231Pa xs）与钍-230（²³⁰Th，文中记为230Th xs）可用于重建古海洋沉积作用（以²³⁰Th归一化的通量）及海洋环流变化（基于²³¹Pa/²³⁰Th比值……）
