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What are the key characteristics of a geological hotspot and how do they form volcanic chains?
Geography
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Here are the characteristics of hotspots:
- Stationary Source: The hotspot remains relatively fixed while tectonic plates move over it.
- Volcanic Chains: As a plate moves, it forms a chain of volcanoes. Older volcanoes are farther from the hotspot.
- Age Progression: Rocks become progressively older with distance from the active hotspot.
- Basaltic Magma: Most hotspots produce basaltic lava, which is less viscous and flows easily.
- Long-lived Activity: Hotspots can remain active for millions of years.
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