👉 The word "stratigraphy" refers to the study of layers and their arrangement within rocks or sedimentary material. It is like taking a look at a bookshelf: Each layer represents a different part of the book, each one more solidly placed than the last.
A stratigraphical example sentence might be "Stratigraphy isn't just about studying layers; it's also about how we understand our planet and its geological history." This sentence is like saying that in order to know something, you need to understand how it was formed and why certain things are still around.
