We've got mudstones and very fine-grained sediments and how they fossilize, nodules and cementation.

我们有泥岩和非常细粒沉积，以及它们如何石、结核和胶结作用。

It seems that iron is the paleontologist's friend so any kind of iron cementation, iron stone cementation, so siderite, iron carbonate helps to preserve structures within sediment.

铁似乎是古朋友，所以任何一种铁胶结，铁石胶结，所以菱铁矿，碳酸铁有助于保护沉积中结构。