of Principles stratigraphy:
-Used to assign relative ages to the rock of sediment record. Mostly
involve layered sedimentary rock but can provide relative age for goal.
Structures folds and faults.
Principles:
1. Principles of super = position. older sediments are on bottom.
2. Principle of cross cutting relations.
3. Principle of inclusions.
4. principle of faunal/floral succession: (Biostratigraphy)
Mafic dikes form first than felsic if they cross cut.