Exam 7: Metamorphism, Metamorphic Rocks, and Hydrothermal Rocks

In high temperature and pressure metamorphism, if the parent rock is _____ and the dominant mineral is amphibole then the rock is amphibolite.

Hydrothermal processes are not important along submarine mid-ocean ridges because of the cooling effect of seawater.

Andalusite, kyanite, and sillimanite are among the best known index minerals that provide information about the temperature and pressure of metamorphism.

The most important factors controlling the characters of metamorphic rocks include ___.

A metamorphic rock is similar both in mineralogy and texture to its parent rock.

Metamorphic rocks owe their texture mostly to temperature.

_________ is the pressure felt by deeply buried rock.

A _______ is characterized by parallel-orientated minerals, commonly mica.

___ is a metamorphic rock with distinct light and dark layers that formed at high temperatures and pressures.

___ metamorphism is the term used for the process in which rocks are altered by hot water.

The most important factor in controlling the final metamorphic product is __.

When clay minerals in a shale are subjected to elevated temperature and pressure, they may change in the solid state (that is, without melting) to form platy minerals like ___ that are at equilibrium with the new temperature/pressure conditions.

The zone of contact metamorphism (the aureole), ____.

Any new mineral that has crystallized under high-pressure conditions tends to occupy less space than did the mineral or minerals from which it formed.

___ is pressure applied equally to all surfaces of a substance as a result of burial or submergence.

If limestone is metamorphosed at relatively low temperatures and pressures it recrystallizes into marble.

When hot metal-rich solutions contact cold seawater at submarine spreading ridges, _______ are precipitated.

Minerals that crystallize in needle-like shapes (for example hornblende) grow with their long axis parallel to the plane of foliation.

Because of the ease with which it can be split into thin flat sheets, this metamorphic rock is used for making chalkboard, pool tables, and roofs.

___ tends to deform objects into oblong or flattened forms.