1.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.
1.笔过研究,分出了分异火山岩系中的火山
因
和未分异基性火山岩系中的共
,认为前
的金属聚集与岩浆分异有密切关系。