Geol CH:3 Exam

Front

Rhyolite is composed of mostly silica rich minerals

Back

True

Front

Andesite and diorite are both considered phaneritic igneous rocks.

Back

False

Front

Magma is molten rock located beneath the Earth's surface.

Back

True

Front

Extrusive igneous rocks are fine grained due to slow crystallization in the Earth's subsurface.

Back

False

Front

A dike is a discordant extrusive igneous structure

Back

False

Front

The geothermal gradient is the rate at which temperature increases with increasing depth beneath the Earth's surface

Back

True

Front

Felsic igneous rocks are silica-poor.

Back

False

Front

A quartz mineral near the surface of the Earth will melt at a lower temperature than a quartz mineral located deep in the Earth.

Back

True

Front

Batholiths may contain different concentrations of mafic, felsic or intermediate minerals.

Back

True

Front

Bowen's Reaction Series can be used as a tool to predict the order in which minerals crystallize.

Back

True