Metamorphic rocks form as a result of (circle best answer): (a) burial and melti
ID: 283720 • Letter: M
Question
Metamorphic rocks form as a result of (circle best answer): (a) burial and melting of sediments; (b) heating from contact with molten outer core material; (c) reversals in polarity of the Earth's magnetic field; (d) evaporation; (c) crystallization from a melt; (f) solid state recrystallization of rocks; (g) eruption from volcanoes; (h) precipitation from sea water; (i) decompression melting. Which of the following does NOT cause metamorphism (circle best answer): (a) polarity reversals of the Earth's magnetic field; (b) lowering of temperature, (c) lowering of pressure; (d) increase of temperature; (c) increase in pressure. True or False (circle best answer): Regional metamorphic rocks are more common than contact metamorphic rocks. True or False (circle best answer): Faulting is usually necessary to bury a rock ("tectonic burial") deep enough so that metamorphism takes place: in other words simple burial by continuous deposition is not enough. In addition to the pressure and temperature, what strongly influences the types of minerals that grow in a metamorphic rock? (write in answer) For the following write whether the type of metamorphism primarily takes place during Exhumation or Burial. Retrograde metamorphism takes place during Prograde metamorphism takes place during Match the Type of metamorphic rock (lowercase letters) with the tectonic environment (Upper case letters). In other words, please write the appropriate upper case letter (A, B, or C) after the Type of metamorphic rock (a, b, or c). Medium-pressure/medium temperature metamorphic rock High-pressure/low-temperature metamorphic rock Low-pressure/high-temperature metamorphic rock Mid levels of typical continental crust Near contact of pluton in upper continental crust Subduction/ones (specifically subduction complexes) which of the following is a metamorphic rock name (circle best answer): (a) gabbro, (b) two-pyroxene garnet granulite. (c) chert; (d) melange; (c) dolomite; (f) turbidite; (g) bizarrolite.Explanation / Answer
Question 1
Answer is (f) Solid state recrystallization of rocks.
Metamorphic rocks from as a result of solid state recrystallization of rocks.
Metamorphism of rocks takes under certain pressure and temperature conditions without melting of rocks. If melting takes place then they are called as igneous rocks.