flinty slate

Based on researches on mineralogy of the Upper Precambrian System of Anhui Province, the cherts from the Sidingshan Formation of the Huainan Group of Anhui Province were selected to determine Rb-Sr and Sm-Nd isotopes.

在对苏皖北部的上前寒武系进行了矿物学研究基础上 ,选择安徽北部淮南群四顶山组燧石作为测定对象 ,系统测试 Rb- Sr和 Sm - Nd同位素 ,应用 Sm- Nd等时线方法进行了定年。

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.

燧石结核是华南地区二叠纪栖霞组的重要识别特征之一,其成因具重要的古地理、古海洋意义。

Genetic study on flint from the crust area of the central Pacific Ocean mountains;

中太平洋结壳区海山燧石岩成因研究