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UNIT 4: Geologic Time

Scroll down for review videos, animations, and diagrams.

Note:  Special thanks and acknowledgement to the staff at Hommocks Middle School for providing these review clips, animations and online tools.

Relative Dating

Earth's History Review Video:

How to Think About Geologic Time:

Relative Dating & Unconformities Animations:

Correlation & Index Fossils

NY State Index Fossils ESRT:

Correlation & Index Fossil Animations:

Geologic Time ESRT (Pg. 8)

Geologic Time ESRT (Pg. 9)

Geologic Time Scale

All Geologic History ESRT (Pg. 2,3,8,9)

Geologic Time Scale Animations:

Radioactive Decay

Radioactive Decay Review:

Decay Data ESRT:

Radioactive Decay Animations:

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