How does seismic tomography create 3D images of mantle plumes?

Apr 28, 2011 ... 1) What is a hotspot? A volcanic "hotspot" is an area in the upper mantle from which heat rises in a plume from deep in the Earth. The Iceland hotspot and mighty geological phenomena. Iceland sits spanning the Mid-Atlantic Ridge tectonic plate boundary which separates the Eurasian and ... Sep 9, 2013 ... Thousands of earthquakes occur every year on and around Hawaii Island, or the Big Island. Most of these temblors are too minor to be felt, but some are strong ... Hotspots are places where the magma rises up through the crust. They are caused by a static source of magma, often away from plate margins. As the plate moves ... Cabo Verde · Cape Verde Hotspot Volcano Group · Composite | Stratovolcano · Pleistocene. Sep 29, 2010 ... Image of a diagram showing a 'hotspot' volcano (e.g., Hawaii). Button that takes you back to Volcanoes main page. HTML code by Chris Kreger ... hotspots have a mantle plume underneath them. Shiki Machida, one of the volcanologists onboard, has done research that shows that some small hotspot volcanoes ... Jul 3, 2016 ... The volcanoes of Hawaii, Iceland, the Galapagos and Yellowstone form from plumes of mantle beneath the surface, making them hotspot volcanoes. Hot-spot volcanism. Volcanoes can also form above a column of superheated magma called a mantle plume. This may happen in areas that are distant from plate ... May 6, 2022 ... Most hotspot volcanoes are basaltic (e.g., Hawaii, Tahiti). As a result, they are less explosive than subduction zone volcanoes, in which water ...