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

Author Question: Why is gabbro considered a coarse-grained mafic rock? A) It contains a lot of silica. B) It is ... (Read 46 times)

APUS57

  • Hero Member
  • *****
  • Posts: 571
on: Jul 16, 2018
Why is gabbro considered a coarse-grained mafic rock?
 
  A) It contains a lot of silica.
  B) It is extremely rare.
  C) It contains a lot of feldspar.
  D) It contains a lot of magnesium and iron.

Question 2

A scientist identifies a rock sample as very rare. Why did he do so?
 
  A) He observed that the rock is fine grained and has a lot of silica, making it mafic.
  B) He observed that the sample is fine grained and has very little silica, making it ultra-mafic.
  C) He observed that the rock is coarse grained and has a lot of silica, making it ultra-mafic.
  D) He observed that the rock is fine grained and has very little silica, making it felsic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

phuda

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: B


APUS57

  • Hero Member
  • *****
  • Posts: 571
Reply #2 on: Jul 16, 2018
Thank you


phuda

  • Sr. Member
  • ****
  • Posts: 348
Reply #3 on: Jul 16, 2018
No problemo


« previous next »
 

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Volcanoes Are Rock Factories Volcanoes Are Rock Factories
René Descartes (1596–1650). French philosopher considered the founder of modern philosophy. A ... René Descartes (1596–1650). French philosopher considered the founder of modern philosophy. A ...
Success, You Rock, Achievement, The way we work Success, You Rock, Achievement, The way we work
Elbow milk–abdomen rock. Place your left hand under the recipient’s right elbow and lay your ... Elbow milk–abdomen rock. Place your left hand under the recipient’s right elbow and lay your ...
Granite and Granitic Rock Granite and Granitic Rock
Directional Selection in Rock-Pocket Mice Directional Selection in Rock-Pocket Mice
Video: Blood Test Basics

For a complete list of videos, visit our video library