« previous next »

Author Question: Plate A and Plate B both consist of only oceanic lithosphere. Plate A is subducting under Plate B. ... (Read 143 times)

ENagel

  • Hero Member
  • *****
  • Posts: 540
on: Jul 16, 2018
Plate A and Plate B both consist of only oceanic lithosphere. Plate A is subducting under Plate B.
 
  Why isn't Plate B subducting under Plate A? Explain you answer
  What will be an ideal response?

Question 2

Which plate contains older lithosphere, A or B? Explain how you know.
 
  What will be an ideal response?


courtney_bruh

  • Sr. Member
  • ****
  • Posts: 308
Reply #1 on: Jul 16, 2018
Answer to Question 1

Plate B doesn't subduct under Plate A because it is less dense than Plate A. Density initiates subduction and Plate A is denser than Plate B, so this is why Plate A subducts.

Answer to Question 2

Plate A is older, as it is more dense and subducting. As the plate ages, it cools, gets thicker and gets denser and starts to subduct.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

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).

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Blood Agar Plate- gamma hemolysis Blood Agar Plate- gamma hemolysis
Utagawa Hiroshige, Hamamatsu: Winter Scene, plate 30 from The Fifty-Three Stations of the Tokaido, ... Utagawa Hiroshige, Hamamatsu: Winter Scene, plate 30 from The Fifty-Three Stations of the Tokaido, ...
A typical TP sensor mounted on the throttle plate of this port-injected engine. A typical TP sensor mounted on the throttle plate of this port-injected engine.
The small arrows indicate the air bypassing the throttle plate in the closed throttle position. ... The small arrows indicate the air bypassing the throttle plate in the closed throttle position. ...
Theory of Plate Tectonics Theory of Plate Tectonics
Logic1000 - oceanic ft. Vagabon [rebirth] (official video) Logic1000 - oceanic ft. Vagabon [rebirth] (official video)
Video: Neuron Structure Animation

For a complete list of videos, visit our video library