« previous next »

Author Question: Which is an example of an authigenic sediment? a. Quartz sand b. Manganese nodules c. Volcanic ... (Read 121 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?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Manganese helps Deinococcus radiodurans to avoid radiation damage. Manganese helps Deinococcus radiodurans to avoid radiation damage.
Ground cover and colour such as shown here in (a) white sand Ground cover and colour such as shown here in (a) white sand
On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand On the slopes of Chimborazo, a 6,310 m high volcanic peak in the Andes Mountains of Ecuador, Alexand
Quartz Quartz
Surtsey, a volcanic island, during the time of its formation. Surtsey, a volcanic island, during the time of its formation.
Root Nodules Root Nodules
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

For a complete list of videos, visit our video library