n.海面升降；海面變化

The formation of auriferous stratawas controlled by volcanism and eustacy. 火山作用和海平面變化對(duì)含金地層的形成起到了控制作用。

To sum up, it arose from eustacy, transportation of sediment and lithosphere uplift relatively of the region due to the neo-tectonic movement. 這可以從沉積砂堤與含貝殼砂堤的分布看出，它們都曾是不同時(shí)期海岸位置的所在。

The bottom boundary of sequence 3, sequence 4 and sequence 5 results from integrated effect of change of climate, sediment source and tectonic activity under falling global eustacy. 層序3、層序4和層序5的底界面是在構(gòu)造作用穩(wěn)定、全球海平面下降背景之上由相對(duì)海平面次一級(jí)旋回變化形成的，是古氣候變化、沉積物供給及構(gòu)造沉降共同作用的結(jié)果。

Sea level eustacy 海平面升降