During the early Holocene, it was transgressed and reduced into a part of Lixahe bay.
早全新世因受海侵影响,本区是里下河浅水海湾的一部分;
The bog in upper stream formed early, and had begun in early Middle Holocene;
上游形成时间较早,始于中全新世前期;
The Yumen fault has been active since the Early Pleistocene to the present day, so it is an active fault during the Holocene Epoch and a causative fault of the Yumen earthquake.
玉门断裂自早更新世以来一直活动,是现代地震断裂,也是玉门地震的发震断裂。
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