How are index fossils helpful in dating rock layers?
Index fossils (also known as guide fossils, indicator fossils or zone fossils) are fossils used to define and identify geologic periods (or faunal stages). They work on the premise that, although different sediments may look different depending on the conditions under which they were laid down, they may include the remains of the same species of fossil. ChaCha 24/7!
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About Fossils
A fossil is an organism that once was alive but now is preserved in another mineral or chemical form. The name comes from the Latin word 'fossus.'
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How are index fossils used to determine the relative ages of rock formations?
They work on the premise that, although different sediments m...
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What is an example of an index fossil?
An example of an index fossil is a Pecten gibbus of the Quate...
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Is a seashell an index fossil?
A seashell that washes ashore is not an index fossil. However...
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What are the requirements for a fossil to be and index fossil?
There are no known requirements for a fossil to be classified...
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What is the definition of index fossil?
Index fossils (also known as guide fossils, indicator fossils...
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