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 12 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?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Rover exposes silica-rich dust on Mars Rover exposes silica-rich dust on Mars
The Configuration, Normal Pressures, and Oxygen Content of the Heart Chambers The Configuration, Normal Pressures, and Oxygen Content of the Heart Chambers
Surfactant-tempalted mesostructured silica Surfactant-tempalted mesostructured silica
Summary of SOAP Note Content Cont. Summary of SOAP Note Content Cont.
Chromatin states, gene content, and characteristic histone modifications Chromatin states, gene content, and characteristic histone modifications
Content of genomic versus cDNA libraries Content of genomic versus cDNA libraries
Video: Lipid digestion - mouth, stomach and small intestine

For a complete list of videos, visit our video library