How do geochemical analyses of hotspot lavas reveal the composition of their source regions in the mantle?

Oct 23, 2024 ... A global study of lavas from volcanic hot spots suggests that contrary to accepted wisdom, Earth's deep mantle may have the same composition ... Sep 23, 2019 ... ... hotspot volcanic ash and fluxes into the Pacific Ocean. Open Access ... Our data show that volcanic ash from both subduction zone and hot spot ... Jan 4, 2019 ... Based on observations mainly made on the Hawaiian volcanoes the compositional evolution of hotspot volcanoes is believed to reflect the ... 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 ... 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 24, 2012 ... Summary · Volcanoes grow above hotspots, which are zones of melting above a mantle plume. · Hotspot volcanoes are better able to penetrate oceanic ... 2. How does magma get to the Earth's crust to create a hotspot volcano? · Magma travels to Earth's surface through an upward tunnel from deep within Earth. May 25, 2017 ... Abstract. Mantle plumes are buoyant upwellings of hot rock that transport heat from Earth's core to its surface, generating anomalous regions of ... Apr 18, 2013 ... Abstract. While most oceanic volcanism is associated with the passive rise of hot mantle beneath the spreading axes of mid-ocean ridges ... A 30 foot slice of volcano looks like most other rocky terrain. Unless it ... hotspot, volcanoes would form. They would build enormous shield-shaped ...