The selenium content variation displays a positive correlation with the sea level fluctuation curve, with the selenium content reaching a maximum at the highest Marinefloodingsurface.
硒含量变化与海平面升降曲线表现出正相关,在最大海泛面处达最大值。
2
The maximum floodingsurface lying in estuarine - shallow Marine muddy unit demarcates the underlying transgressive sequence and overlying regressive sequence.