Question

Metamorphism occurs when _____.

mountain ranges are lifted up and eroded.

rocks are heated to such a high temperature that they begin to melt.

water evaporates from a large body of water at the surface of Earth.

solid rock changes in composition and/or texture without the mineral crystals melting.

At what temperature will metamorphism begin?

200 degrees Celsius

3,000 kbars

1,000 bars

2,000 degrees Celsius

Differential stress (pressure) can cause _______.

cause minerals to grow larger

cause new minerals to grow from the protolith

cause the rocks to partially melt

cause minerals to align parallel to each other

Chemically reactive fluids react with __________to grow new minerals.

ocean water

minerals in the protolith

groundwater

the high temperatures

What are the three agents of metamorphism?

differential pressure, confining pressure, and lithostatic pressure

temperature, pressure, and fluids

differential pressure, deep-sea smokers, and hydrothermal vents

differential pressure, heat, and temperature

What is the protolith of marble?

shale

sandstone

quartzite

limestone

Which metamorphic texture describes minerals oriented flat and parallel to each other so as to make sheets or planes in the rock?

foliation

lineation

slate

non-foliated

The protolith for slate is ______.

sandstone

shale

limestone

granite

Distinct banding of light and dark minerals is described as a ______ texture.

phyllitic

slatey cleavage

gneissic

schistose

Which has larger mica minerals?

shale

marble

phyllite

slate

schist

Which of the following is the parent rock (protolith) for quartzite?

Limestone

Sandstone

Granite

Dolostone

Conglomerate

Which style of metamorphism will be generated by a mantle plume?

Burial

Hydrothermal

Regional

Contact

If you find a rock with distinct foliation, how was this rock metamorphosed?

directed stress

hydrothermal fluids

confining pressure

heat from a pluton

What type of metamorphic tectonic environment would tektites be found?

regional metamorphism

impact zone

burial metamorphism

subduction zone

Answer 1

1) D, solid rock changes in composition and/or texture without the mineral crystals melting.

Remember metamorphism process is valid upto the melting of the rock, after that the rock becomes migmatite.

2) A, 200 degree Celsius

This is called the burial metamorphism and characterise by zeolite facies.

4) B, minerals in the protolith

This is called metasomatism.

5) B, temperature pressure and fluid

6) D, limestone

7) A, foliation

8) B shale

9) C, gneiss

10) D, Schist

11) B, sandstone

12) D, contact

14) B, impact zone