Recent Examples of magma from the Web
The granite block is a monadnock, or isolated mountain, created by a pocket of magma trapped underground 300 million years ago and only coming to the surface, through uplift and erosion, 15 million years ago.
But the action is below the surface, where the crew has drilled more than 15,000 feet toward magma, creating one of the world’s deepest geothermal wells.
Eighty thousand years ago, hot magma spewed from a volcanic vent and raced across the landscape in an open channel.
Most have been caused by the settling of lava built up over time and the abrupt movement of the south flank over the earth's crust as magma pushes into Kilauea's East Rift Zone.
Laguna Caliente—literally hot lagoon in Spanish—derives its hellish qualities from the churning of magma underneath the active crater.
Because the upper portion of the volcano was removed, the pressure decreased on the system of magma beneath the volcano.
The cycle of hot, incandescent magma rising to the surface and later cooling also explains the periodic brightening and dimming of Loki Patera, the researchers said.
Their findings suggest that the overturning started at the western end of the lava lake, where the magma was exposed to the surface of the lake between 180 and 230 days before the infrared images were taken.
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MAGMA Defined for English Language Learners
Definition of magma for English Language Learners
: hot liquid rock below the surface of the Earth
MAGMA Defined for Kids
medical Definition of magma
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