« previous next »

Author Question: Why does the lithosphere thicken as it moves away from a mid-ocean ridge? What will be an ideal ... (Read 55 times)

KimWrice

  • Hero Member
  • *****
  • Posts: 579
on: Jul 15, 2018
Why does the lithosphere thicken as it moves away from a mid-ocean ridge?
 
  What will be an ideal response?

Question 2

Discuss how oceanic crust forms. What process generates the necessary magma? Also, be sure to discuss ophiolite sequences and discuss how the formation of each layer contributes to the formation of the crust.
 
  What will be an ideal response?


vish98

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: Cooling of the asthenosphere will add rigid material to the lithosphere.

Answer to Question 2

Answer: Magma is generated through decompression melting. This magma rises to the surface to fill in the gaps between the diverging tectonic plates. Fractures created by tension provide pathways for magma to rise and spill out on to the ocean floor, creating the pillow basalts. The fractures the basalt moved through become sheeted dikes as the magma cools. Meanwhile, the magma that remained in the magma chamber forms the gabbro bodies.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

The dorsal fin and saddle patch of a resident killer whale in the northeastern Pacific Ocean. It may The dorsal fin and saddle patch of a resident killer whale in the northeastern Pacific Ocean. It may
Cultures Ideal Body Types Cultures Ideal Body Types
The side injector combines with the shape of the piston to create a swirl as the piston moves up ... The side injector combines with the shape of the piston to create a swirl as the piston moves up ...
Major Topographic Divisions of the North Atlantic Ocean Major Topographic Divisions of the North Atlantic Ocean
The Oceanic Ridge System The Oceanic Ridge System
Ocean Conveyor Belt Ocean Conveyor Belt
Video: Leukemia

For a complete list of videos, visit our video library