The maximum flooding surface lying in estuarine - shallow Marine muddy unit demarcates the underlying transgressive sequence and overlying regressive sequence.

位于河口湾—浅海相中的最大海侵面将冰后期海侵沉积旋回分为其下的海侵层序和其上的海退层序。

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It is emphasized that the first flooding surface (FFS) is used as a standard or useful marker in optimizing chronostratigraphic and lithostratigraphic boundaries.

在年代地层方面，进一步强调以初始海泛面(FFS)作为优化年代地层“阶”的标准。

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The selenium content variation displays a positive correlation with the sea level fluctuation curve, with the selenium content reaching a maximum at the highest Marine flooding surface.

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。

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Rain and thawing snow could cause localised flooding and surface water on roads and fields, it said.

BBC: Wales weather: Floods possible as heavy rain forecast

Heavy rain has also caused surface flooding in parts of Devon, including the A396 between Bickleigh and Rewe.

BBC: More snow is forecast overnight in Devon

Forecasters have also warned of the risk of "localised surface water flooding and possible disruption to travel" in the worst hit areas.

BBC: Saturday's record temperatures not beaten