海平面

The formation of auriferous stratawas controlled by volcanism and eustacy.

火山作用和海面变化对含金地层起到了控制作用。

Wuguan marine erosion physiognomy has important geognosy significance in the study of structural movement and the changes in sea level in period of Holocene Epoch.

对于研究全新世构造运动、全新世海面变化等具有重要科研、科普价值。