This topic contains a solution. Click here to go to the answer

Author Question: In what ways are the Sierra Nevada and the Andes similar? What will be an ideal ... (Read 80 times)

rosent76

  • Hero Member
  • *****
  • Posts: 516
In what ways are the Sierra Nevada and the Andes similar?
 
  What will be an ideal response?

Question 2

What is an accretionary wedge? Briefly describe its formation.
 
  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

gasdhashg

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

Both formed by Andean-type mountain building. They formed as continental volcanic arcs that eventually got thick enough to switch from volcanism to plutonism. The Andes are still forming today, of course, while the Sierra Nevada are the uplifted batholithic root of some ancient great volcanoes.

Answer to Question 2

An accretionary wedge is a chaotic accumulation of sedimentary and metamorphic rocks with occasional scraps of ocean crust that is shoved up against the edge of a continent at a subduction zone. Sediment derived from the land and scraped from a subducting plate is plastered against the landward side of the trench like piles of dirt in front of a bulldozer.




gasdhashg

  • Sr. Member
  • ****
  • Posts: 335

 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

For a complete list of videos, visit our video library