relative dating Flashcards

1
Q

what is relative dating

A

Is a process that lets us look at geological events or fossils and put them in order from youngest to oldest, determining the age of a rock or event in relation to other rocks or events.

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2
Q

what is the law of superposition

A

Is a law that states that is a sequence of undisturbed rocks, the oldest layer is on the bottom and the youngest is on the top

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3
Q

Law of Original Horizontality

A

Is the law that states that sediment layers are deposited horizontally

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4
Q

Index Fossils

A

; fossils that help us date the age and order of rocks

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5
Q

Law of Cross-Cutting Relationships

A

intrusions and extrusions are always younger than the rocks they cut through

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6
Q

Uniformitarianism

A

;s a rule that states that what happened before is still happening today and vice versa .

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7
Q

Fault

A

a fracture or zone of fractures between two blocks of rock

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