Relative dating rocks

Geologic Age Dating Explained - Kids Discover

Paleomagnetism: Earth’s magnetic polarity flip-flops about every 100,000 to 600,000 years.

Evolution -- Dating Methods

The polarity is recorded by the orientation of magnetic crystals in specific kinds of rock, and researchers have established a timeline of normal and reversed periods of polarity.

Geologic Age <strong>Dating</strong> Explained - Kids Discover

The Laws of Relative Dating — Mr. Mulroy's Earth Science

Biostratraphy: One of the first and most basic scientific dating methods is also one of the easiest to understand.

Relative dating - pedia

Layers of rock build one atop another — find a fossil or artifact in one layer, and you can reasonably assume it’s older than anything above it.

Relative dating rocks:

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