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。
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。
Lower Urho Formation in Region 8 of Karamay Oilfield is an important oil-bearing series, where gravel is dominated. the classification and correlation of its strata are the long existed problems.
克拉玛依油田八区下乌尔禾组为一套以砾岩为主的粗碎屑沉积，是该区最重要的含油层系。 对其地层的划分与对比，是长期存在的一个问题。
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