How do scientists determine the age of volcanic rocks from hotspot islands?

A hotspot is an area of the Earth's mantle from which hot plumes rise upward, forming volcanoes on the overlying crust. The Hawaiian volcanic hotspot and its possible origin in Northern Australia beginning with the eruptions of Cambrian Antrim flood basalts. A hotspot is a small area within the mantle which is of a higher temperature than the area surrounding it, and is usually associated with volcanic activity. La Grille, Unknown - Evidence Credible, Comoros Hotspot Volcano Group, Shield ; Karthala, 2007 CE, Comoros Hotspot Volcano Group, Shield ... 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 ... 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 ... A frequently-used hypothesis suggests that hotspots form over exceptionally hot regions in the mantle, which is the hot, flowing layer of the Earth beneath the ... A volcanic hotspot is where magma pushes up from deep in the Earth's crust or mantle, and creates a volcano. Mar 23, 2023 ... Hotspot volcanoes can produce very large volumes of lava and have an important role in Earth's evolution and atmosphere. Today, famously active ... The Iceland hotspot and mighty geological phenomena. Iceland sits spanning the Mid-Atlantic Ridge tectonic plate boundary which separates the Eurasian and ...