What are index fossils and how are they used to determine the absolute age of sedi

mentary rocks

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Chemistry

Mays

6 May, 22:35

What are index fossils and how are they used to determine the absolute age of sedi

mentary rocks

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Nataly Delacruz · Answer 1

Index fossils are from species that only existed for a short period of time. they are found in rocky layers, Trilobites and Graptolites are index fossils. A guide and zone fossil are used often to determine the age of the rock layer in which it is found.

What are index fossils and how are they used to determine the absolute age of sedimentary rocks

What are index fossils and how are they used to determine the absolute age of sedi

mentary rocks