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magma chamber

British  

noun

  1. a reservoir of magma in the earth's crust where the magma may reside temporarily on its way from the upper mantle to the earth's surface

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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The size of Strombolian eruptions can vary but are often characterised by intermittent explosions, which occur due to the presence of gas in the magma chamber within the volcano.

From BBC Jun. 2, 2025

Indeed, the fact that there were so many hot spots spaced so closely together suggests that there is a vast underground magma chamber system.

From Salon Feb. 3, 2025

The shift suddenly pressurizes the magma chamber, driving out the gas into the sky in an explosive burst.

From Science Magazine May 27, 2024

The paper is titled "An upper-crust lid over the Long Valley magma chamber."

From Science Daily Oct. 18, 2023

Beneath the surface is a magma chamber that is about forty-five miles across–roughly the same dimensions as the park–and about eight miles thick at its thickest point.

From "A Short History of Nearly Everything" by Bill Bryson

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