nodular chert
常見例句
- In limestone of Taiyuan Group, Origin of nodular chert and banded chert is that they had been replaced in diagenesis phase.
太原群灰?guī)r中的燧石結(jié)核或條帶是在成巖作用階段經(jīng)硅質(zhì)交代成因的。 - The Middle Permian Chihsia Formation of South China is featured by nodular chert, which is of implications in the reconstruction of coeval paleogeography and paleoceanography.
燧石結(jié)核是華南地區(qū)二疊紀(jì)棲霞組的重要識別特征之一，其成因具重要的古地理、古海洋意義。
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