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

Author Question: You dig into material in a region you know has been glaciated. Explain how you could tell you are ... (Read 68 times)

neverstopbelieb

  • Hero Member
  • *****
  • Posts: 534
on: Jul 13, 2018
You dig into material in a region you know has been glaciated. Explain how you could tell you are digging into glacial till rather than alluvium.
 
  What will be an ideal response?

Question 2

Explain how and why sea level fluctuated during the Pleistocene.
 
  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

pangili4

  • Sr. Member
  • ****
  • Posts: 346
Reply #1 on: Jul 13, 2018
Answer to Question 1

Answer: Till is composed of unsorted material (rocks, gravel, sands, old soils, etc.) in no particular order with depth. Till will occur over large stretches of landscape. Alluvium is confined to present or former courses of rivers. It will be sorted by grain size. The former is ice-laid while the latter is liquid water laid.

Answer to Question 2

Answer: As continental ice sheets and glaciers advanced their increase in mass was made possible by the capture of snowfall in the hydrologic cycle. Thus, the moisture was unable to flow back to the oceans for a long time. Continued oceanic evaporation meant the lowering of sea level by 130 meters at maximum. This caused the continents to increase somewhat in size and features such as the Bering Land Bridge to exist. The sea level rose as glacial melting exceeded oceanic evaporation.


neverstopbelieb

  • Member
  • Posts: 534
Reply 2 on: Jul 13, 2018
Excellent

apple

  • Member
  • Posts: 352
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

TEM of a region of the proximal tubule from a mammal. TEM of a region of the proximal tubule from a mammal.
Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a Hong Kong is a strange situation. A British colony since 1842, it was handed back to China in 1997 a
Use a grinder or a file to remove the mushroom material on the end of a punch or chisel. Use a grinder or a file to remove the mushroom material on the end of a punch or chisel.
The early regulatory region of phage l The early regulatory region of phage l
RNA base sequence of the trp leader region RNA base sequence of the trp leader region
Condensing the Nuclear Material Condensing the Nuclear Material
Video: Anaphylaxis Animation

For a complete list of videos, visit our video library