Which tectonic hazards are linked to climate or geology?Watch
Need help on this exam question: "asses the relationship between different plate boundaries and their tectonic hazards." Guess i'll need some examples of tectonic hazards that are not related to plate boundary type in i'm assessing things.
1) Constructive (divergent) plate boundaries
At these boundaries, tectonic plates are moving away from each other, allowing magma from the mantle to rise up between them, forming volcanoes. Most of Earth's constructive plate boundaries are on the ocean floor, however in some places such as Iceland, the boundaries can be seen above sea level.
2) Destructive (convergent) plate boundaries.
At destructive plate boundaries where one oceanic plate is being subducted under another oceanic plate, partial melting of the subducting plate produces magma, which rises up through the crust to form volcanoes erupting magma of intermediate to mafic composition. As the plates scrape past each other, earthquakes from shallow to deep focus are created.
At destructive plate boundaries where an oceanic plate is being subducted under a continental plate, the oceanic plate partially melts to form magma with an intermediate composition. As the magma rises through the continental crust above, it melts some of the continental crust to form silicic magma. This is then erupted at the surface to form volcanoes with an intermediate composition. These volcanoes are strato volcanoes, like those found in the Andes, and erupt explosively. Large earthquakes also occur at these boundaries.
3) Conservative plate boundaries
At conservative plate boundaries, two plates are moving past each other, with no crust being created or destroyed. There are no volcanoes at these boundaries, however there are earthquakes which can range from insignificant to severe in magnitude.
I hope that helps