自此以后，长江、黄河及滦河与全球海洋水圈变化引起的海侵发生了复杂的陆海相互作用。
Since then there has occurred complex land sea interaction between the Yangtze River, Yellow River, Luanhe River and transgressions caused by the eustatic changes.
本文根据对官地亚组岩性、相标志及生物特征分析，认为官地期曾发生二次海侵。
On the basis of an analysis of the lithology, facies indicators and biological features, it is considered that two Marine transgressions took place during this period of time.
本文根据对官地亚组岩性、相标志及生物特征分析，认为官地期曾发生二次海侵。
On the basis of an analysis of the lithology, facies indicators and biological features, it is considered that two Marine transgressions took place during this period of time.
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