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

Author Question: Describe how Fred Vine and D. H. Matthews related the seafloor-spreading hypothesis to magnetic ... (Read 168 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
Describe how Fred Vine and D. H. Matthews related the seafloor-spreading hypothesis to magnetic reversals.
 
  What will be an ideal response?

Question 2

Describe slab pull and ridge push. Which of these forces appears to contribute more to plate motion?
 
  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

shoemake

  • Sr. Member
  • ****
  • Posts: 343
Answer to Question 1

After researchers discovered alternating stripes of high- and low-intensity magnetism, Vine and Matthews suggested that the stripes of high-intensity magnetism are regions where the paleomagnetism of the ocean crust exhibits normal polarity, while low-intensity magnetism is due to reversed polarity. They reasoned that as magma solidifies along narrow rifts at an oceanic ridge, it is magnetized with the polarity of the existing magnetic field, and because of seafloor spreading, these strips are carried away in opposite directions.

Answer to Question 2

Slab pull is subduction of cold, dense slabs of oceanic lithosphere acting as the driving force of plate motion. Ridge push is a gravity-driven mechanism resulting from the elevated position of the oceanic ridge, causing slabs of lithosphere to slide down the flanks of the ridge.




itsmyluck

  • Member
  • Posts: 546
Reply 2 on: Jul 14, 2018
YES! Correct, THANKS for helping me on my review


jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

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

For a complete list of videos, visit our video library