This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Describe how Fred Vine and D. H. Matthews related the seafloor-spreading hypothesis to magnetic ... (Read 162 times)

itsmyluck

  • Hero Member
  • *****
  • Posts: 546
on: Jul 14, 2018
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
Reply #1 on: Jul 14, 2018
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
Great answer, keep it coming :)

komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Wild-Potato Vine Wild-Potato Vine
Selected Drugs for Psoriasis and Related Disorders Selected Drugs for Psoriasis and Related Disorders
If the coil is working, the end of the magnetic pickup tool will move with the changes in the ... If the coil is working, the end of the magnetic pickup tool will move with the changes in the ...
An Event-Related Potential An Event-Related Potential
A particle (q = -4.0 mC, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a ... A particle (q = -4.0 mC, m = 5.0 mg) moves in a uniform magnetic field with a velocity having a ...
Consider the following hypothesis problem. n = 30 H0: 2 = 500 s2 = 625 Ha: 2 500 The test ... Consider the following hypothesis problem. n = 30 H0: 2 = 500 s2 = 625 Ha: 2 500 The test ...
Video: Lower Limb Arteries Animation

For a complete list of videos, visit our video library