The study covers regionalstratigraphy, regional geological structures and their evolution ;
研究内容包括：区域地层及区域构造演化；
2
The Norwegian Ekofisk Oilfield was introduced in detail covering the exploration history, basin evolution, petroleum systems, regionalstratigraphy and depositional facies.
介绍了挪威埃科菲斯克油田的基本概况及油田勘探历史，描述了该盆地的演化、油气系统、区域地层及沉积相。
3
The results of trace element analysis of regionalstratigraphy show that slightly metamorphosed pre Devonian clastic rocks are main source strata for gold and antimony deposits.