Mafic lavas are hot, high in silica, low in volatiles, and relatively viscous. Volcanic lavas are called felsic lavas, and they are usually cooler and include high levels of silica and volatiles.

The vast majority of lava out there falls into one of three types: mafic, intermediate, and felsic. They're also called basaltic, andesitic, and rhyolitic lavas, respectively. (There are other ...

Bottom: LRO view of the felsic highland volcano ... from the Moon by the Apollo astronauts are mafic. Most of them are basalts – lava erupted as quiet, fissure-fed sheets.

Silica is also richer in magmas formed by fractional crystallization If the magma is mafic-which ... As a result, felsic magma contains the highest percentage of silica, as well as having the highest ...

the newly released lava will push down on mafic rocks until they become so deeply buried that they melt under the high subterranean pressures and temperatures, transforming into felsic rocks.

These broad, low angle volcanoes erupt mafic ... within the lava and runs like a river down slopes. Compare this with Guatemala's Fuego Volcano, a stratovolcano which erupts a more felsic lava ...

A: The temperature of magma inside a volcano — and of lava ... in the felsic temperature range. Orange is hotter, in the intermediate range, and yellow is hotter still, in the mafic range.

He maintains that felsic rocks can form anytime mafic rocks sink deep within Earth—and not only along subduction zones. When a volcano erupts, for example, the newly released lava can push down ...