How do volcanic eruptions from hotspots affect ocean chemistry and marine ecosystems?

La Grille, Unknown - Evidence Credible, Comoros Hotspot Volcano Group, Shield ; Karthala, 2007 CE, Comoros Hotspot Volcano Group, Shield ... The southeastern extension of the Austral Islands volcanic chain terminates near 29°S, 140°W at the active Macdonald Seamount. The 'hotspot' region near ... Sep 13, 2022 ... yes. given the right geologic setting, and right ammount of time, mantle plumes can form anywhere. Plus there already ARE monogenetic, plume fed ... Oct 29, 2013 ... This discovery helps to explain how “hotspot volcanoes”—the kind that give birth to island chains like Hawaii and Tahiti—come to exist ... Aug 12, 2024 ... Volcanic hotspots are how the Hawaiian Islands were formed. Many volcanoes form at tectonic plate edges, but some erupt from a stationary point ... Feb 24, 2012 ... Summary · Volcanoes grow above hotspots, which are zones of melting above a mantle plume. · Hotspot volcanoes are better able to penetrate oceanic ... Feb 11, 2020 ... A hotspot is a large plume of hot mantle material rising from deep within the Earth. A line of volcanoes develops as a plate moves over a hotspot. The Hawaiian Islands are the youngest volcanic mountains in a long chain of volcanoes that formed over a hotspot. They are still forming today. Another hot spot ... Jan 30, 2025 ... Instead, the Hawaiian Islands are what's called a volcanic hotspot. A single point where volcanoes form. The giveaway is that as you move from ... Here we present new age and geochemical data from volcanic samples from Richardson Seamount, the Agulhas Ridge along the Agulhas-Falkland Fracture Zone (AFFZ) ...