Conclusion the fine strata classification and correlation of Chang 6 oil-bearing formation has a deep significance to the development of the Oilfield.
结论长6油层组精细地层划分与对比对油田开发具有重要意义。
It can be as a marker member of Late Cretaceous for its broad distribution in geography, but short duration in geologic period and well used for strata classification and correlation.
在我国上白垩统普遍见到，其地理分布广，地质时限短，可作为晚白垩世的标志分子，在地层划分对比中举足轻重。
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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