川东北下三叠统飞仙关组鲕粒滩白云岩同位素地球化学特征<sup>*</sup>

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Isotopic geochemical characteristics of oolitic bank dolostones in the Lower Triassic Feixianguan Formation in northeastern Sichuan Province

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川东北地区飞仙关组白云岩与长兴组生物礁白云岩的 δ ¹⁸O 和 δ ¹³C值的分布