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 137 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
Thanks for the timely response, appreciate it

nyrave

  • Member
  • Posts: 344
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

Transcranial Magnetic Stimulation Transcranial Magnetic Stimulation
Procedures and Diagnostic Tests Related to the Endocrine System Procedures and Diagnostic Tests Related to the Endocrine System
The age-related increase in spirituality is different for two cohorts born seven years apart. The ... The age-related increase in spirituality is different for two cohorts born seven years apart. The ...
Functional magnetic resonance image (fMRI). This image illustrates the areas of cortex that became ... Functional magnetic resonance image (fMRI). This image illustrates the areas of cortex that became ...
Magnetic Reversals and Seafloor Spreading Magnetic Reversals and Seafloor Spreading
Concepts related to alterations of genetics Concepts related to alterations of genetics
Video: A Human Karyotype Preparation Animation

For a complete list of videos, visit our video library