Metamorphism

Question 1

the process of changing a pre-existing rock due to heat, pressure, and fluids

Answer 1

metamorphism

Question 2

metamorphism due to hydrothermal fluids exchanging constituents with an external source

Answer 2

metasomatism

Question 3

increase of temperature and pressure

Answer 3

prograde

Question 4

decrease of temperature and pressure

Answer 4

retrograde

Question 5

metamorphism that affects areas less than 100km^2

Answer 5

local metamorphism

Question 6

metamorphisms that affects areas greater than 100km^2

Answer 6

regional metamorphism

Question 7

the original rock that produced the metamorphic rock

Answer 7

protolith

Question 8

3 agents of metamorphism

Answer 8

1. heat
2. pressure
3. chemically active fluids

Question 9

provides energy for chemical reactions and recrystallization of minerals

Answer 9

heat

Question 10

provides stress

Answer 10

pressure

Question 11

provides and enhances mobility of ions present

Answer 11

chemically active fluids

Question 12

metamorphism that occurs at 200 °C - 300 °C with 300 MPa - 600 MPa at 0 - 6 Km

Answer 12

low grade metamorphism

Question 13

metamorphism that occurs at 200 °C - 300 °C with 300 MPa - 600 MPa at 2 - 20 Km

Answer 13

intermediate metamorphism