(Table 2) Uranium and thorium isotopic composition, activity ratios and ages ...

A new chemical procedure for cleaning marine carbonates was applied to remove detritus as well as metaloxide contaminations of marine shells from Eemian deposits and adjoining...本研究采用一种全新的海洋碳酸盐（marine carbonates）清洗化学工艺，以从埃姆间冰期（Eemian）沉积物及其毗邻区域的海洋贝壳中去除碎屑（detritus）与金属氧化物污染物（metaloxide contaminations）……