I found the following video not unbiased and with an agenda behind it. However, I am mainly interested in the argument presented against "The Law of superposition". This Law or Principle is is a foundational principle of sedimentary stratigraphy which states that:
Sedimentary layers are deposited in a time sequence, with the oldest on the bottom and the youngest on the top.
However, the video uses particularly examples so as to invalidate this principle used for dating fossils. So my question is if you know of some reference which addresses this creationist argument?