Basic, acidic extrusive and volcanoclastic rocks are known as the main rock types.
石炭纪末期本区的岩浆活动开始,早二叠世晚期和晚二叠世早期是两个主活动期。
山碎屑的Basic, acidic extrusive and volcanoclastic rocks are known as the main rock types.
石炭纪末期本区的岩浆活动开始,早二叠世晚期和晚二叠世早期是两个主活动期。
The study shows that Cretaceous volcanics mainly consist of medium acidic volcanic lava and volcanoclastic rocks, with locally developed basic lava;
结
认为，白垩纪
山岩以中酸性山熔岩和山碎屑岩为主，局部发育基性熔岩；
声明：以上例句、词性分类均由
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