Geologic Ages of Earth History 地球地质年代表
As for the geologic ages and stratigraphic correlation of the remaining two formations of the Gaozhou Group, further study is required.
高州群其余两个组地层的地质年代和对比则还有待进一步的研究。
The consistency of the geologic ages suggests that the selenium source is related to eruption or weathering of the Emeishan basalt in Southwest China.
从地质时代的一致性上反映硒的来源与西南地区峨眉山玄武岩喷发或风化作用有关。
The difference in average composition between the rocks of two different geologic ages provides the important evidence for the actual occurrence of chemical evolution.
两个地质时代岩石平均成分的差异，是化学演化真实存在的重要证据。
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