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What is more important in accurately aging a geological site: the number of layers or the presence of index fossils? Why?

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GinnyAnswer

Final answer:

Index fossils are crucial for accurately dating geological sites, as they provide a timeframe and evidence of rock layer ages.


Explanation:

Index fossils play a crucial role in accurately aging geological sites because they are used to determine the ages of rock layers. These fossils are of organisms that lived over a wide area and for a short period of time, providing a reliable timeframe.

The presence of more than one type of index fossil in rock layers signifies that those layers are of the same age. This strengthens the evidence for accurately determining the age of geological sites by cross-referencing different index fossils.

Combining the study of stratigraphy and the use of index fossils allows scientists to match rocks with specific fossils, aiding in the accurate determination of geological site ages.


Learn more about Geological dating with index fossils here:

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