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 101 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?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Rock Climbing Catfish Rock Climbing Catfish
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
How Seismic Waves Pass through Rock How Seismic Waves Pass through Rock
Immanuel Kant (1724–1804). German philosopher considered by many to be the greatest thinker of the ... Immanuel Kant (1724–1804). German philosopher considered by many to be the greatest thinker of the ...
RAINBOW SERPENT ROCK RAINBOW SERPENT ROCK
Floating rock illusion Floating rock illusion
Video: Structures that affect circulation - heart and MABP

For a complete list of videos, visit our video library