Relative Dating 2 layer comparison

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed sedimentary rock layers, younger rocks lie above older rocks.

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What does the Law of Crosscutting state?

Back

The Law of Crosscutting states that a fault or intrusion is younger than the rocks it cuts through.

Front

How can you determine which rock layer is older?

Back

You can determine which rock layer is older by using the Law of Superposition and the Law of Crosscutting.

Front

What is relative dating?

Back

Relative dating is a method used to determine the age of rocks and fossils in relation to one another.

Front

What is an intrusion in geology?

Back

An intrusion is a body of igneous rock that forms when magma cools and solidifies beneath the Earth's surface.

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What is a fossil?

Back

A fossil is the preserved remains or traces of ancient organisms, often found in sedimentary rock.

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What is the significance of a fault in geology?

Back

A fault is a fracture in the Earth's crust where blocks of rock have moved past each other, indicating geological activity.

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What does it mean if two layers are said to be 'the same age'?

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If two layers are said to be 'the same age', it means they were formed at the same time in geological history.

Front

What is an unconformity?

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An unconformity is a gap in the geological record that represents a period of erosion or non-deposition.

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How do fossils help in relative dating?

Back

Fossils help in relative dating by providing evidence of the age of the rock layers in which they are found.