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

Author Question: Which sediment is categorized under cosmogenous sediments? a. Evaporites b. Ooliths c. ... (Read 56 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560

Which sediment is categorized under cosmogenous sediments?
  a. Evaporites
  b. Ooliths
  c. Microtektites
  d. Manganese nodules



Question 2

What valuable commodity has yet to be commercially mined from ocean sediments?
  a. Natural gas
  b. Gravel
  c. Diatomaceous earth
  d. Manganese nodules



Question 3

Sometimes formations on land can shed light on ocean processes. What do the White Cliffs of Dover
  in England show?
  a. An accumulation of very fine ooze of mixed origin that was pushed above sea level from
  plate tectonics.
  b. An accumulation of siliceous ooze that has risen above sea level from plate tectonics.
  c. A lithified calcareous ooze that was pushed above sea level from plate tectonics.
  d. A sheared cliff that formed during sea floor spreading




Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wilsonbho

  • Sr. Member
  • ****
  • Posts: 322
Answer to Question 1

ANS: C
Microtektites are a type of cosmogenous sediments. They are thought to form from violent impacts of
meteors and asteroids on Earth. The impact melts part of the crust on impact, causing it to splash back
into space. The material melts again as it travels back through the atmosphere before falling back to
Earth. The result is translucent, oblong sediments made of glass particles. Information can be found in
the section Sediments May be Classified by Source.



Answer to Question 2

ANS: D
Manganese nodules have yet to be commercially mined due to their low market value. As techniques
for deep-sea mining become more advance and raw material prices increase, however, the nodules'
concentration of valuable materials will almost certainly be exploited. Information can be found in the
section Marine Sediments Are Economically Important.



Answer to Question 3

ANS: C
The White Cliffs of Dover are an example of the lithification of calcareous ooze. Although formations
like these are formed in the ocean, they are brought above sea level due to normal processes of plate
tectonics. Information can be found in the section Pelagic Sediments Vary in Composition and
Thickness.





nelaaney

  • Member
  • Posts: 560
Reply 2 on: Aug 22, 2018
Wow, this really help


tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

For a complete list of videos, visit our video library