They're basically complete, because they were buried in an ancient lake deposit.

它们基本上是完整的，因为它们被埋在一个古老的湖泊沉积物中。

So there are many other terrestrial laminated deposits from around the world, and those terrestrial deposits are, they can be subdivided into lake deposits, meandering river deposits, and then just the general flats.

所以世界各地还有很多其他的陆地层状沉积物，而这些陆地沉积物，它们可以细分为湖泊沉积物、蜿蜒的河流沉积物，然后就是一般的平地沉积物。