CAJ | 학술논문

对克百断裂下盘二叠系砂砾岩中碳酸盐胶结物的氧、碳稳定同位素的年代效应进行较正,对其组成特征进行研究.结果发现氧稳定同位素较轻,主要位于-16‰～10‰(PDB),而碳稳定同位素变化较大,大部分处于0-9‰(PDB),少量小于-15‰(PDB).经过分析计算,认为研究区砂砾岩中碳酸盐胶结物形成于早成岩晚期、70～90℃淡水环境中,这种结果与当时的构造背景、沉积环境、气候条件相符合.
대극백단렬하반이첩계사력암중탄산염효결물적양、탄은정동위소적년대효응진행교정,대기조성특정진행연구.결과발현양은정동위소교경,주요위우-16‰～10‰(PDB),이탄은정동위소변화교대,대부분처우0-9‰(PDB),소량소우-15‰(PDB).경과분석계산,인위연구구사력암중탄산염효결물형성우조성암만기、70～90℃담수배경중,저충결과여당시적구조배경、침적배경、기후조건상부합.
After the proofreading of time effect of the carbon and oxygen stable isotopic of carbonme cementation in Permian rudite Of the footwall of Kebai-fault,its composition character is researched.The oxygen stable isotopic value (PDB)show light(-16～-10‰).while the carbon stable isotopic value(PDB)range is widely with mainly from 0 to 9‰ and few below -15‰.The carbonate cementation is produced in latter stage of early diagenesis and fresh water which paleotemperature is mostly from 70℃ to 90℃.Such environment is accord with the tectonic setting and deposit surround as well as climate condition.