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

Author Question: How do sedimentary cores from the ocean floor support the concept of seafloor spreading? What ... (Read 42 times)

littleanan

  • Hero Member
  • *****
  • Posts: 575
on: Jul 14, 2018
How do sedimentary cores from the ocean floor support the concept of seafloor spreading?
 
  What will be an ideal response?

Question 2

What is the age of the oldest sediments recovered using deep-ocean drilling? How do the ages of these sediments compare to the ages of the oldest continental rocks?
 
  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

EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #1 on: Jul 14, 2018
Answer to Question 1

Sedimentary cores show patterns of magnetized rock thanks to the natural compass properties of magnetite. The cores from either side of the ocean ridge have patterns that match both in strata thickness and in paleomagnetism.

Answer to Question 2

The oldest seafloor sediments recovered are 180 million years old. This is much much younger than the oldest continental rock, which exceeds 4 billion years in age.


littleanan

  • Hero Member
  • *****
  • Posts: 575
Reply #2 on: Jul 14, 2018
Correct answers!


EAN94

  • Sr. Member
  • ****
  • Posts: 307
Reply #3 on: Jul 14, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

insect's compound eye, revealing photoreceptor cells, support cells and pigment cells insect's compound eye, revealing photoreceptor cells, support cells and pigment cells
Barrel-vaulted gallery, ground floor of the Colosseum, Rome. Barrel-vaulted gallery, ground floor of the Colosseum, Rome.
Ocean-view Ocean-view
Leaning against a table with a pillow for support. Leaning against a table with a pillow for support.
Ice cores as indicators of environmental change Ice cores as indicators of environmental change
Illustration of the concept of overlapping genes Illustration of the concept of overlapping genes
Video: Interpreting a cladogram Animation

For a complete list of videos, visit our video library