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

Author Question: Why do continental glaciers flow? ... (Read 54 times)

APUS57

  • Hero Member
  • *****
  • Posts: 571
Why do continental glaciers flow?

Question 2

Explain the difference between a terminal moraine and recessional moraine and how they are formed.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cuttiesgirl16

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Aug 7, 2018
Answer to Question 1

Glaciers flow by internal plastic deformation when the weight of overlying ice, firn, and snow causes ice crystals at depth to arrange themselves in parallel layers that glide over each other. This deformation happens when a threshold pressure from the overlying mass is exceeded. Pressure is greater under thicker accumulations of ice, so continental glaciers flow radially outward from central areas of thicker ice to marginal areas of thinner ice.

Answer to Question 2

Terminal moraines and recessional moraines are types of end moraines, which are ridges of sediment deposited at the toe of a glacier. Terminal moraines mark the farthest advance of a glacier. Recessional moraines, however, are deposited during temporary pauses of a retreating glacier.




APUS57

  • Member
  • Posts: 571
Reply 2 on: Aug 7, 2018
Thanks for the timely response, appreciate it


skipfourms123

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

For a complete list of videos, visit our video library