A stratigraphic layer in one location overwhelmingly represents one species, while the same species is discovered in a similar stratigraphic layer hundreds of kilometers away.What method is used to provide an estimate of age for this layer and this species?
A)biostratigraphy
B)dendrochronology
C)Steno's law of superposition
D)carbon 14 dating

Question

Quizplus · Accepted Answer

Biostratigraphy is the study of fossils and their distribution in rock layers, which allows for the correlation of rock layers based on the species present. Therefore, the presence of the same species in different locations can be used to estimate the age of the layer in which it is found. Dendrochronology relies on the analysis of tree rings, Steno's law of superposition is a basic principle of stratigraphy that states that older rocks are found below younger rocks, and carbon 14 dating is a method used to date organic materials up to approximately 50,000 years old. None of these methods would be applicable in the scenario described in the question.

A Stratigraphic Layer in One Location Overwhelmingly Represents One Species