RipheanBNC²³⁶²¹³⁺¹ 基本例句 里菲期 It could also be correlated with that in the upper horizon of the Middle Riphean—lower horizon of the Upper Riphean in South Ural Mountains and Siberia of Russia, North Africa, and Alaska Peninsula. 它还可以与南乌拉尔、西伯利亚、北美、北非和阿拉斯加半岛等地区的中里菲界上部—上里菲界下部层位中的叠层石组合对比。 cnki