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

Author Question: Explain why the mountains of the Western Cordillera of North America exhibit high elevations but do ... (Read 61 times)

go.lag

  • Hero Member
  • *****
  • Posts: 667
on: Jul 16, 2018
Explain why the mountains of the Western Cordillera of North America exhibit high elevations but do not have deep crustal roots.
 
  What will be an ideal response?

Question 2

Continents tend to have the oldest rocks in the center with younger rocks flanking the center. Explain this observation, with reference to cratons and exotic terranes.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

onowka

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Jul 16, 2018
Answer to Question 1

The region is underlain with low-density buoyant mantle.

Answer to Question 2

Precambrian rock masses (cratons) are preserved, yet usually highly metamorphosed. These rocks were emplaced in the middle to lower crust during mountain building, then exposed and later buried under sedimentary rocks. Bands of younger rock formed by accretion of material that was too light (i.e., crust) to subduct. Many are volcanic arcs and are referred to as exotic terranes.


go.lag

  • Member
  • Posts: 667
Reply 2 on: Jul 16, 2018
Excellent

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Chinese workers on a railway in the far West. “Without them,” Leland Stanford, president of the Cent Chinese workers on a railway in the far West. “Without them,” Leland Stanford, president of the Cent
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
West facade, Cha1134–1220; south spire, ca. 1160; north spire 1507–13. West facade, Cha1134–1220; south spire, ca. 1160; north spire 1507–13.
Canada is set to become the Saudi Arabia of the north Canada is set to become the Saudi Arabia of the north
Polar wandering paths for Eurasia and North America Polar wandering paths for Eurasia and North America
Use Fleury’s algorithm to determine Euler Circuit in the following graph. Exhibit exactly one ... Use Fleury’s algorithm to determine Euler Circuit in the following graph. Exhibit exactly one ...
Video: Muscular System Animation

For a complete list of videos, visit our video library