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
International Subcommission on Stratigraphic Classification 国际地层划分小组委员会
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
Precise and careful stratigraphic classification is the base of all kinds of work.
正确而又精细的地层划分是各项工作的基础。
There are many sequence stratigraphic classification project of Yanchang formation in Ordos basin.
鄂尔多斯盆地三叠系延长组地层层序划分方案较多。
In the regional stratigraphic classification and correlation, the Lower Tertiary strata are absent in Guyang basin, Inner Mongolia.
在区域地层划分与对比中，内蒙古固阳盆地缺少下第三系。
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