« previous next »

Author Question: Why does the lithosphere thicken as it moves away from a mid-ocean ridge? What will be an ideal ... (Read 63 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?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

A Motor Protein Moves Microtubules in Cilia and Flagella A Motor Protein Moves Microtubules in Cilia and Flagella
Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra
What are examples of ideal forms? What are examples of ideal forms?
The Great Ocean Conveyor The Great Ocean Conveyor
Ocean-Ocean Convergence Ocean-Ocean Convergence
Variations in Ocean Water Density with Depth Variations in Ocean Water Density with Depth
Video: Hip Animation

For a complete list of videos, visit our video library