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magma chamber


'magma chamber' can also refer to...

magma chamber

magma chamber

magma chamber

magma chamber

magma chamber

magma chamber

Anatectic Migmatites from the Roof of an Ocean Ridge Magma Chamber

Micro-analytical Perspectives on the Bishop Tuff and its Magma Chamber

Numerical Modeling of Time-dependent Fluid Dynamics and Differentiation of a Shallow Basaltic Magma Chamber

Crystallization Sequence and Magma Chamber Processes in the Ferrobasaltic Sept Iles Layered Intrusion, Canada

Boundary Layer Crystallization in a Basaltic Magma Chamber: Evidence from Rishiri Volcano, Northern Japan

Quantification of the Intrusive Magma Fluxes during Magma Chamber Growth at Soufrière Hills Volcano (Montserrat, Lesser Antilles)

Thermodynamic Model for Energy-Constrained Open-System Evolution of Crustal Magma Bodies Undergoing Simultaneous Recharge, Assimilation and Crystallization: the Magma Chamber Simulator

Rates of Thermal and Chemical Evolution of Magmas in a Cooling Magma Chamber: a Chronological and Theoretical Study on Basaltic and Andesitic Lavas from Rishiri Volcano, Japan

Seismic structure beneath Mt Vesuvius from receiver function analysis and local earthquakes tomography: Evidences for location and geometry of the magma chamber

The Earliest History of the Skaergaard Magma Chamber: a Textural and Geochemical Study of the Cambridge Drill Core

Depth and Evolution of a Silicic Magma Chamber: Melting Experiments on a Low-K Rhyolite from Usu Volcano, Japan

Formation of a Compositionally Reverse Zoned Magma Chamber: Petrology of the ad 1640 and 1694 Eruptions of Hokkaido-Komagatake Volcano, Japan

Hybridization of a Shallow ‘I-type’ Granitoid Pluton and its Host Migmatite by Magma-Chamber Wall Collapse: the Tokuwa Pluton, Central Japan

 

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A region, postulated to exist below the Earth's surface, in which magma is received from a source region in the deep crust or upper mantle, stored, and from which it moves to the Earth's surface at the site of a volcano. The existence of ‘magma chambers’ is often invoked by geochemists to provide a location for processes such as fractional crystallization, because the chemistry of lavas is explicable only in terms of such processes. When magma moves rapidly from the chamber, as in a pyroclastic flow eruption, the unsupported chamber roof may collapse to produce a caldera at the surface. The diameter of the caldera can be used to estimate the diameter of the underlying magma chamber; diameters of up to 40 km are not uncommon for terrestrial subvolcanic magma chambers.

Subjects: Earth Sciences and Geography.


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