Here’s a breakdown of the landforms and events along with the types of plate boundaries where they can occur:
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Ocean Trench
- Convergent Boundaries: Primarily formed where an oceanic plate converges with another plate (either oceanic or continental), leading to subduction.
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New Sea Floor
- Divergent Boundaries: Created when tectonic plates move apart, allowing magma to rise and solidify at the ocean floor, creating new oceanic crust.
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Earthquakes
- Transform Boundaries: Frequently occur as plates slide past each other, causing friction and stress that is released as seismic energy.
- Convergent Boundaries: Also common due to the intense pressure and friction at subduction zones.
- Divergent Boundaries: Can occur as plates move apart and stress builds.
-
Rift Valley
- Divergent Boundaries: Formed as continental plates pull apart, leading to the creation of valleys, fault lines, and sometimes new ocean basins.
In summary:
- Ocean Trench: Convergent
- New Sea Floor: Divergent
- Earthquakes: Transform, Convergent, Divergent
- Rift Valley: Divergent