- Relative dating - pedia
- Geologic Age Dating Explained - Kids Discover
- In focus Obsidian - The Guide to Rocks and Minerals
- Sediment and Sedimentary Rocks - Tulane University
Relative dating - pedia
Paleomagnetism is often used as a rough check of results from another dating method.
Geologic Age Dating Explained - Kids Discover
Tephrochronology: Within hours or days of a volcanic eruption, tephra — fragments of rock and other material hurled into the atmosphere by the event — is deposited in a single layer with a unique geochemical fingerprint.
In focus Obsidian - The Guide to Rocks and Minerals
Biostratraphy: One of the first and most basic scientific dating methods is also one of the easiest to understand.
Sediment and Sedimentary Rocks - Tulane University
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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