Metamorphism

Question 1

burial metamorphism

Answer 1

.

Question 2

contact metamorphism

Answer 2

Changes in the mineralogy and texture of rock resulting from the heat and pressure in a small area, such as rocks near and in contact with an igneous intrusion.

Question 3

exhumation

Answer 3

A process in which subducted metamorphic rocks rise the surface because of buoyancy and circulation in the subduction zone.

Question 4

foliated rock

Answer 4

A metamorphic rock that displays foliation. Foliated rocks include slate, phyllite, schist, and gneiss.

Question 5

foliation

Answer 5

A set of flat or wavy parallel planes produced by deformation.

Question 6

gneiss

Answer 6

A light-colors poorly foliated rock with coarsse bands of segregated light and dark minerals throughout, produced by high-pressure, high-temp metamorphism.

Question 7

nonfoliated granoblastic rock

Answer 7

.

Question 8

high pressure metamorphism

Answer 8

Metamorphism occurring at high pressure…

Question 9

marble

Answer 9

A granoblastic rock produced by the metamorphism of limestone or dolostone.

Question 10

metamorphic facies

Answer 10

Groupings of metamorphic rocks of various mineral compositions formed under different grades of metamorphism from different parent rocks.

Question 11

metasomatism

Answer 11

A type of metamorphism in which a rock’s bulk composition changes only because of fluid transport of chemcial substances into or out of rock.

Question 12

phyllite

Answer 12

A foliated rock that is intermediate in grade between slate and schist. Small crystals of mica and chlorite give it a more or less glossy sheen.

Question 13

quartzite

Answer 13

A very hard, white granoblastic rock derived from quartz-rich sandstones.

Question 14

regional metamorphism

Answer 14

Metamorphism caused by high pressures and temperatures that extend over large regions, as happens where plates collide.

Question 15

schist

Answer 15

A meramorphic rock characterized by the pervasive coarse, wavy foliation known as schistosity.

Question 16

seafloor metamorphism

Answer 16

Metamorphism associated with mid-ocean ridges, in which changes ina rock’s bulk chemical compositino are produced by fluid transport of chemicl components into or out of the rock.

Question 17

shock metamorphism

Answer 17

Metamorphsim that occurs when minerals are subjected to the high pressures and temperatures of shock waves generated when a meteorite collides with Earth.

Question 18

slate

Answer 18

The lowest grade of foliated rock, easily split into thin sheets, produced primarily by the metamorphism of shale.

Question 19

stress

Answer 19

The force per unt iare acting on any surface within a solid body. Stress consists of confining pressure and directed pressure.