Available options:
+ geology.
+ mineralogy.
+ sedimentary.
+ stratigraphy.

Answer the following question given this paragraph: The study of rock layers is called stratigraphy. Laws of stratigraphy help scientists determine the relative ages of rocks. The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface. Q: What do we call the study of rock layers? A:
Answer:
stratigraphy