Author Question: The rock type that is the source of most commercial asbestos is ____. A)serpentine B)amphibole ... (Read 67 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
The rock type that is the source of most commercial asbestos is ____.
 A)serpentine
 B)amphibole
 C)pegmatite
 D)hematite
 E)biotite

Question 2

What are terranes? How are they recognized? What role did accretion of terranes play in the growth of western North America?



nguyenhoanhat

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

A

Answer to Question 2

Small accreted lithospheric blocks, called terranes, are found in many mountain systems. They are composed of such different fossils, stratigraphy, structural trends, and paleomagnetic properties from the surrounding rocks and craton that geologists think that they were carried great distances as parts of other plates until they collided with other terranes and continents. More than 100 different-sized terranes were added to the western margin of North America during the past 200 million years.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

For a complete list of videos, visit our video library