Are mantle plumes compositionally different from the surrounding mantle?

Oct 28, 2002 ... Unfortunately for area residents, the transition from a hot-spot volcano to a island-arc volcano signals the potential for greater danger ... ... hotspot volcanoes, Earth Plan. Sci. Lett., 60, 195–206. Article Google ... (1991) Volcano spacing and plate rigidity, Geology, 19, 397–400. Article ... Dec 9, 2019 ... Today's #Yellowstone #CalderaChronicles follows the journey of hotspot volcanism from it's start 16-17 million years ago to it's present day ... Feb 6, 2025 ... It is a spreading plate margin volcano as well as a hotspot volcano. Volcanic hazards. Volcanic hazards include explosions, lava flows, bombs or ... 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 ... Jan 30, 2025 ... This impressive geological journey stretches for around 6,000 kilometers, reaching just shy of Russia and Alaska. Excitingly, located just ... ... hotspot volcanic islands that are remote from subducting plate boundaries. This has been driven by the very successful development of geothermal resources ... Volcanoes grow above hotspots. A hotspot is a zone of melting above a mantle plume. · Hotspot volcanoes are better able to penetrate oceanic crust than ... Nov 12, 2018 ... Volcanoes form far away from plate boundaries due to hotspot volcanism. Here, hot material rises from the Earth's interior via a so called plume towards the ... Shield volcanoes are built almost entirely of low viscosity (very thin, liquidity) fluid lava flows. Flow after flow pours out in all directions from a central ...