« previous next »

Author Question: The arkose contains greater than 25 feldspar (both potassium and sodium-rich plagioclase feldspar) ... (Read 75 times)

CORALGRILL2014

  • Hero Member
  • *****
  • Posts: 525
on: Jul 16, 2018
The arkose contains greater than 25 feldspar (both potassium and sodium-rich plagioclase feldspar) along with abundant quartz. What kind of igneous rock might have weathered to produce the sediment? Hint: Look back to Figure 4.3 in your textbook.
 
  What will be an ideal response?

Question 2

Geologists interpret a very warm climate for this region at this time. What evidence in the rocks supports this interpretation?
 
  What will be an ideal response?

Question 3

Consider what other minerals might be in this igneous rock other than the quartz and two feldspars. Why aren't these minerals also present in the arkose?
 
  What will be an ideal response?


daiying98

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 16, 2018
Answer to Question 1

I appreciate you answering this question. This is a great community

Answer to Question 2

Posted another one can you check that one too? Thanks.

Answer to Question 3

The other minerals present in the granite are biotite and amphibole. Both of these are Fe-Mg rich minerals and they are not present in the arkose because they have been chemically weathered into clay and Fe-oxides (hence the reddish color of the arkose).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

sodium sodium
potassium potassium
potassium potassium
A noose hanging from a “Liberty Tree” reveals this artist’s bias: The “tar-and-feathering” of a Brit A noose hanging from a “Liberty Tree” reveals this artist’s bias: The “tar-and-feathering” of a Brit
Middle age brings greater career satisfaction than young adulthood, sometimes through major job ... Middle age brings greater career satisfaction than young adulthood, sometimes through major job ...
A hypothesis test is performed to test the claim that a population proportion is greater than ... A hypothesis test is performed to test the claim that a population proportion is greater than ...
Video: Digestive chemicals - types & enzymes

For a complete list of videos, visit our video library