« previous next »

Author Question: The rock type that is the source of most commercial asbestos is ____. A)serpentine B)amphibole ... (Read 74 times)

segrsyd

  • Hero Member
  • *****
  • Posts: 530
on: Jul 13, 2018
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
Reply #1 on: Jul 13, 2018
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
« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Organisms can be classified according to their source of energy Organisms can be classified according to their source of energy
The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old. The skullcap from Trinil, Java is the type specimen for H. erectus and is about 900,000 years old.
The proportion of obese and extremely obese adults in the United States has increased over the past The proportion of obese and extremely obese adults in the United States has increased over the past
In a gear-type oil pump, the oil flows through the pump around the outside of each gear. This is an ... In a gear-type oil pump, the oil flows through the pump around the outside of each gear. This is an ...
A point-type ignition system showing the distributor cam which opens the points A point-type ignition system showing the distributor cam which opens the points
Localizing the Source of High-Frequency Sounds Localizing the Source of High-Frequency Sounds
Video: Protein catabolism (Krebs cycle) and Protein anabolism (protein synthesis)

For a complete list of videos, visit our video library