Stratification Sequences: Principles and Approaches to Interpretation
This chapter outlines some of our philosophy and approaches to making interpretations of ancient sedimentary environments. Some principles are broad, part of the general fabric of geological sciences. Other approaches are quite specific, aimed at organizing observational details into reliable vertical sequences. All should be reviewed and evaluated from time to time by any serious student of stratigraphy. The principles are:
Walther's Law of the superposition of strata.
These principles apply directly to sedimentology. They can be simply stated and are commonly reliable. Their value, and possible flaws, are discussed below.