Hotspots Flashcards
What are hotspots
Hotspots are small areas away from plate margins with an unusually high heat flow linked to volcanic activity
What occurs at a hotspot
At a hotspot, a plume of magma rises from the asthenosphere. The magma pushes through the crust, forming volcanoes at the surface
What happens at continental hotspots
As continental hotspots move they become extinct
What happens at oceanic volcanoes
Where oceanic volcanoes move away from each other they cool and subside remaining as islands, or if under water they are oceans mounds.
What is an example of oceanic hotspots
The Hawaiian islands, extending 2,400 km
What is an example of continental hotspots
The Yellowstone is an example of a continental hotspot
How are the volcanic eruptions in a hotspot and provide an example
Eruptions are ussually less violent but produce large quantities of lava. This makes them less hazardous but can cause damage and affect peoples live such as the eruption on Hawaiis Big Island in 2018