cogenetic

The volcanogenic deposits hosted in differential yolcanic rock series and cogenetic deposits hosted in undifferential baste volcanic rock series have been divided and studied in this paper.

笔者通过研究，分出了分异火山岩系中火山成因矿床和未分异基性火山岩系中共矿床，认为前者金属聚集与岩浆分异有密切关系。