« previous next »

Author Question: Which is an example of an authigenic sediment? a. Quartz sand b. Manganese nodules c. Volcanic ... (Read 126 times)

iveyjurea

  • Hero Member
  • *****
  • Posts: 555
on: Aug 22, 2018

Which is an example of an authigenic sediment?
  a. Quartz sand
  b. Manganese nodules
  c. Volcanic dust
  d. Diatomaceous earth



Question 2

What is a main source of terrigenous sediments?
  a. Volcanic eruptions
  b. Rivers
  c. Dust and ash
  d. Cosmic dust



strudel15

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Aug 22, 2018
Answer to Question 1

ANS: B
Authigenic sediments are also called hydrogenous sediments. These types of sediments are the results
of chemical interactions with seawater. Information can be found in the section Sediments May be
Classified by Source.



Answer to Question 2

ANS: B
Terrigenous sediments are those derived from land. The erosion on land is carried down rivers to the
ocean. Information can be found in the section Sediments May be Classified by Source.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

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?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Ground cover and colour such as shown here in (a) white sand Ground cover and colour such as shown here in (a) white sand
Snout and mouth of sand tiger shark, showing protruding teeth and small eyes Snout and mouth of sand tiger shark, showing protruding teeth and small eyes
manganese manganese
Possible Volcanic Vent Possible Volcanic Vent
Monitoring Volcanic Activity Monitoring Volcanic Activity
Surtsey, a volcanic island, during the time of its formation. Surtsey, a volcanic island, during the time of its formation.
Video: The Nerve Impulse

For a complete list of videos, visit our video library