Relative age dating sequence

Determining the Age of Rocks and Fossils, University of California, Berkeley.

is a way to use geometric relationships between rock bodies to determine the sequence of geologic events in an area.

Teaching about Earth's history is a challenge for all teachers.

Time factors of millions and billions of years is difficult even for adults to comprehend.

Hutton viewed tilted strata as having been initially deposited horizontally, and then were subsequently deformed (tilted and folded) by the forces of Earth's internal heat engine.

Long before geologists tried to quantify the age of the Earth they developed techniques to determine which geologic events preceded another, what are termed "relative age” relationships.

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Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

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