华南二叠-三叠系界线研究应严格区分事件地层界线与生物地层界线。
Eventostratigraphic boundary and biostratigraphic boundary have to be clearly distinguished in the study of the Permian-Triassic boundary in South China.
对于准确划分各组地层界线，正确、及时决定取心，卡取风化壳具有重要的指导意义。
It has an important practical significance to divide the boundary of each formation accurately, decide coring correctly and promptly and...
对我国东部不同地层区一些代表性的寒武系—奥陶系界线层位开展了碳、氧同位素研究。
Carbon and Oxygen isotopic study of some representative Cambrian Ordovician boundary strata of various stratigraphic areas in East China has done.
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