The two middle-term base level circles and most Short-term stratigraphic base level circles are completed circle.
研究区内的两个中期旋回和大部分 短期 旋回发育完整.
There might be relatively long term stratigraphic unconformities in successive fossil assemblage zones.
在连续的化石带里可能也会出现较长时间的地层不整合.
Stratigraphy traps can be classified into stratigraphic onlap trap and stratigraphic erosion unconformity trap.
地层圈闭可分为地层超覆不整合圈闭和地层削蚀不整合圈闭.
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