< p >在我看来没有明显的差异。然而,过程不符合叠加原理。在地质学、层折叠,有可能导致逆时代的关系。包的沉积物也可以推动在其他层,例如造山运动,所以订单甚至重复序列,几乎像洗牌扑克牌。也有可能,例如,岩浆岩石渗透并生成层老岩体内年轻多了。深度,质量是添加到地壳岩石融化和凝固而冷却,单位不同的年龄可以找到彼此平行(在地层环境中)。因此,叠加原理只适用于沉积岩和疏松的沉积物,没有经历和重大的构造活动。但是,我也可以想象,考古材料(尽管不是广泛)可中断在特定环境中活跃的构造在起作用或例如冰川向前推材料产生重复序列。< / p > < p >扩大在《华盛顿邮报》的第二部分。建立地质地层从物理接触和通过测量结构形状如罢工和地层倾角(地质学的一个分支叫做< a href = " http://en.wikipedia.org/wiki/Structural_geology " >构造地质学< / >。 Very little is gained from created exposures such as open day mines, mine shafts of other dug pits. It is also possible (as in archaeology) to use geophysical methods to infer layer by ground penetrating radar, seismics etc. It should be mentioned here that methods and possibilities vary between bedrock and unconsolidated sediments, where I would venture to say that archaeology and studies of the unconsolidated sediments are very similar using test pits and coring with the addition of understanding transport mechanisms to understand how and why certain sediment layers exist where they are. Visualisation pof geological data is usually done in sections or logs of boireholes with attempts to connect between observed sections. In bedrock where there is not only vertical variability but also significant horizontal, such as in igneous rocks, obtaining a precise image is very difficult