So they'll glom on to any exposed rock surface.

所以它们会粘在任何裸露的岩石表面上。

The resulting melt water further eroded the surface of dinosaur provincial park, and left large surfaces of cretaceous aged rocks exposed.

由此产生的融水进一步侵蚀了省立恐龙公园的表面，并使大面积的白垩纪岩石暴露在外。

Seawater itself has pretty low concentrations of metals, but as those metals collect on exposed surfaces, they can reach concentrations 1 billion times higher than in the ocean.

海水本身的金属浓度很低，但当这些金属聚集在暴露的表面时，它们的浓度可能是海洋中的 10 亿倍。