universal stratigraphic classification 统一地层划分

magnetic polarity stratigraphic classification 磁极性地层划分

time-stratigraphic classification 年代地层区分

Stratigraphic Classification Project Name 分层作业名称

International Subcommission on Stratigraphic Classification 国际地层划分小组委员会

z stratigraphic classification 地层划分

rock stratigraphic classification 岩石地层划分

stratigraphic classification system 地层分类系统

sequence stratigraphic classification 地层层序划分