Magnesia can trap gas bubbles in the magma chamber of volcanoes because it is viscous and thick. Different minerals crystallize at different temperatures in igneous rocks. If there is a residual ...

Now, Yellowstone's magma is on the move ... "The locus of future rhyolitic [igneous rock] volcanism has shifted to north-east Yellowstone caldera," according to the team, which was led by Ninfa ...

ISLA: Traprain Law is an unusual igneous intrusion called a laccolith. Igneous intrusions form when molten rock, or magma, from deep underground pushes up towards the Earth’s surface but cools ...

The source for the isotopically-enriched Hawaiian magmas contains peridotites that experienced near-surface melting prior ...

Detrital zircons, found in sediment that has been weathered out of rock, can hold more continuous records of Earth's history than igneous zircon formed from molten rock or magma. But because ...

The Journal of Geology, Vol. 23, No. 8, Supplement: The Later Stages of the Evolution of the Igneous Rocks (Nov. - Dec., 1915), pp. 1-91 (91 pages) ...

Volcanoes offer breath-taking views and thrilling adventures. Explore Iceland’s Thrihnukagigur magma chamber, Costa Rica’s ...

I have on-going projects to study: Processes in intrusions: How big are magma chambers? How do igneous cumulates form? What processes occur in magma chambers? For example, is compaction or porous ...

Theoretical modeling provides additional valuable constraints on the interpretation of igneous rocks. Petrographic study coupled with laboratory analysis provides the data necessary to estimate the ...

Volcanic rock is formed when lava or magma cools down and becomes a solid. We call this type of rock igneous rock. Here are three different types of igneous rock from the Museum’s collection.

Areas of expertise My research concerns the generation, movement and evolution of magma within the Earth. I use a combination of igneous petrology, high temperature and pressure experimental , ...