Depth, age, strontium isotopic ratios and trace elemental ratios of samples f...

Please note, that on 2017-06-09 it was discovered that the age values were given as "ka" alhough the values were "Ma". The data are now recalculated (x1000) to fit the unit.请注意，2017年6月9日发现，原数据中年龄值标注的单位为"ka"（千年，kilo-annum），但实际对应的单位应为"Ma"（百万年，mega-annum）。目前已将数据重新计算（乘以1000）以匹配单位要求。