WebVolcanoes occur along both subduction and rift zones but are generally absent along strike-slip plate margins. Most subduction-related volcanoes are explosive and build … WebDestructive plate margin At destructive plate margins, subduction zones and ocean trenches will be formed. At a destructive boundary the plates are moving towards each …
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WebThis may be forced to the surface of the earth causing a volcanic eruption. figure 1. Cross section of a destructive plate margin (source: Wikipedia) The movement of the oceanic plate is not smooth. Due to friction the plate … WebWhy do volcanoes and earthquakes occur at destructive plate margins? Destructive plate margins are where a plate of higher density is subducted, or forced underneath, another, less dense plate. This occurs due to convection currents in the mantle. bktherula spotify
Plate Tectonics and Volcanic Activity - National …
WebAlso known as divergent or tensional boundaries. Although often not as violent as those on destructive plate boundaries, volcanoes and earthquakes do occur on constructive plate boundaries. They also cause mid-ocean ridges to form. Two plates move away from each other. Molten rock (magma) rises from the mantle to fill the gap between the two ... WebView lect6-10.pdf from GEO 1111 at University of Ottawa. 1 Lectures 6 & 7: Volcanoes / Volcanic Eruptions 2 Hunga Tonga-Hunga Ha’apai 15 January 2024 Volcanoes / Volcanic Eruptions Anak. Expert Help. ... • Gravity is the driving force: old tectonic plates sink at convergent margins and are formed at divergent margins ... WebEighty to 120 kilometers below the surface, magma forms when the rocks of the mantle melt just above the subducting plate. The magma rises through the mantle, and erupts to form great composite volcanoes such as Vesuvius. Explosive eruptions have also built arc-shaped island chains such as Indonesia, and continental mountains like the Cascades. bktherula sexuality