炭质的 meaning in English

carbonaceous

It is believed that the distribution of gold deposits in fujian is controlled by regional deep - seated structure and precambrian volcanic flysch formation containing charcoal is main gold source rock . the accumulation of gold is closely related with yanshan granitic magma intrusion
金矿空间分布受一定的区域深部构造单元所制约，前寒武系富含炭质的火山复理石建造是福建省金矿的主要矿源岩，金的富集成矿与燕山期花岗岩类岩浆侵入作用密切相关。