Author Question: What role does fluid play in metamorphism? What will be an ideal ... (Read 43 times)

KWilfred

  • Hero Member
  • *****
  • Posts: 570
What role does fluid play in metamorphism?
 
  What will be an ideal response?

Question 2

What grade of metamorphism occurs at a depth of 1 km and a temperature of 75 degrees C?
 
  A) low-grade metamorphism
  B) lithification of sedimentary rocks
  C) medium-grade metamorphism
  D) not found on Earth



popopong

  • Sr. Member
  • ****
  • Posts: 307
Answer to Question 1

Answer: Fluids, present in the original rock or introduced from magma or high-temperature dehydration and degassing reactions, create metamorphic minerals that incorporate components from the fluid molecules. Metamorphic reactions take place faster and at lower temperature in the presence of water than they do under dry conditions. The movement of fluid during metamorphism delivers some ions and removes others, so that the metamorphic rock has a different bulk composition than that of the parent rock.

Answer to Question 2

Answer: B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Everyone has one nostril that is larger than the other.

For a complete list of videos, visit our video library