Carboniferous sestem

• 石炭系

Carboniferous sestem的用法和样例：

例句

1. Carboniferous siliciclastic rocks in Tazhong area,Tarim Basin are good reservoirs.
   塔中地区石炭系碎屑岩是优质储层。
2. Daqingshan gold deposit is a Carboniferous carbonaceous-rock-hosted quartz vein type.
   大青山金矿是产于石炭系炭质岩系中的石英脉型金矿。