SYNONYMS OR RELATED TERMS: amino-acid dating; aminostratigraphy; amino-acid racemization, amino acid racemization CATEGORY: technique DEFINITION: A method of absolute (chronometric) dating which is hoped to fill the gap between radiocarbon dates and potassium-argon dates.
CATEGORY: technique DEFINITION: Chronological sequences based on successive horizontal displacements, such as sequential beach terraces.
Stratigraphy is by definition obtained from superposed deposits, but other circumstances can be treated in the same way.
For example, the oldest burials are likely to be those nearest the settlement, the top of a hill, or some other favored position.
The later ones will be progressively further out as the cemetery expands.
The concept can be a helpful tool in the interpretation of a site. It is the establishment of a chronology in which occurrences can be placed in the correct sequence relative to each other or to some known succession of events.
Stratigraphy is the study of the relative chronology of the Earth's strata.