What is tilting and why does it effect the law of superposition…also folding fault and intrusion?
The law of superposition states simply that, in a stratigraphic sequence rock (layers one on top of the other), the older rocks are at the bottom, and they get younger as you move to the top. This is an important law that generally goes along with the principle of original horizontality, that states that sedimentary rocks are deposited flat (horizontal). For establishing a geologic history, it would be nice if things were that simple. However, it would also be terribly boring, and our landscape would be nothing like what we know. It would just be… pretty flat. Thankfully, other geological processes beyond simple deposition can create apparent exceptions to superposition and horizontality. The formation of caves might remove part of a lower layer, and the collapse of a cave might transport large pieces of an upper layer downwards. Rocks might be uplifted by subterranean tectonic forces. We geologists now recognize that tilting, folding, and faulting may also complicate the analysis of
