Tephrochronology is based on the idea that the products of individual separate tephra layers are significantly different and thus distinguishable from one another.
By distinguishing shards from host sediments using distinctive concentrations of volcanic ash's mineral and glass components, conventional methods for tephra identification.
Tephra is used by many scientific fields, including geology, paleoecology, anthropology, and paleontology, to date fossils, pinpoint dates in the fossil record, and discover details about past societies and ecosystems.
Tephrochronology is a geochronological method that establishes a chronological framework for the placement of archaeological or paleoenvironmental records using distinct strata of tephra, or volcanic ash from a single eruption. A "tephra horizon" is offered by such a well-known occurrence.
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