Thorium isotopes measurements inside internal layers of manganese deposits fr...

The ratio of 230 Thorium excess over 232 Thorium isotopes has been determined for different layered deposit zones inside ferromanganese nodules and crusts retrieved in the South...已针对在南部采集的铁锰结核（ferromanganese nodules）与铁锰结壳（ferromanganese crusts）内部的不同层状沉积带，测定得到230钍（Thorium）相对于232钍同位素的过剩比值。