... radiohydrogeology 放射性水文地质学 radiolarian chert 放射虫燧石 radiolarian earth 放射虫土 ...
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radiolarian bedded chert 放射虫硅质岩
·2,447,543篇论文数据,部分数据来源于NoteExpress
There exists abundant radiolaria in the chert, and the radiolarian association suggests that the chert was formed in the last period of Late Jurassic.
硅质岩中含有大量放射虫,放射虫组合显示硅质岩的沉积时代为晚侏罗世晚期。
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