This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Relate silica content to crystallization from a magma. What will be an ideal ... (Read 30 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
on: Jul 29, 2018
Relate silica content to crystallization from a magma.
 
  What will be an ideal response?

Question 2

Most of the batholithic-sized plutons found in the continents are composed of
 
  A) obsidian.
  B) basalt.
  C) granite.
  D) sandstone.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

amandalm

  • Sr. Member
  • ****
  • Posts: 306
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: First of all crystallization allows a single magma to generate several different igneous rocks. Minerals with high melting points, have a low silica content, so will crystallize first, followed by minerals with lower melting points (those containing larger amounts of silica). As crystallization proceeds, the composition of the liquid in which the crystals form changes. It becomes depleted in the constituents of minerals that have already crystallized and enriched in the constituents of minerals yet to crystallize, which acts to increase the silica content of the remaining liquid.

Answer to Question 2

Answer: C


RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
Reply #2 on: Jul 29, 2018
Thank you!


amandalm

  • Sr. Member
  • ****
  • Posts: 306
Reply #3 on: Jul 29, 2018
Always glad to help...


« previous next »
 

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

There are more bacteria in your mouth than there are people in the world.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

Results of selective breeding for oil content in corn plants. Results of selective breeding for oil content in corn plants.
The microchip is transforming our lives—the way we shop, spend our leisure, relate to one another, ... The microchip is transforming our lives—the way we shop, spend our leisure, relate to one another, ...
Iron Content of Oral Iron Formulations Iron Content of Oral Iron Formulations
Summary of SOAP Note Content Cont. Summary of SOAP Note Content Cont.
Three conformations of DNA. B-DNA is most common, A-DNA is likely an artifact of crystallization in Three conformations of DNA. B-DNA is most common, A-DNA is likely an artifact of crystallization in
If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas? If CP for an ideal gas is 35.4 J/molK, which of the following is CV for this gas?
Video: Depolarization of the SA node, Action potentials of the myocardium & ANS effects

For a complete list of videos, visit our video library