Author Question: The zone of saturation extends to an indefinite depth. Indicate whether the statement is true or ... (Read 101 times)

Mr3Hunna

  • Hero Member
  • *****
  • Posts: 536
The zone of saturation extends to an indefinite depth.
  Indicate whether the statement is true or false

Question 2

You are given a specimen of rhyolite and a specimen of granite. What method would you use to differentiate them? How can you tell which specimen is more likely volcanic and which is more likely plutonic? Include the terms phaneritic and aphanitic in your answer.



bulacsom

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

False

Answer to Question 2

I would primarily use texture to differentiate between the two.

Rhyolite - If cooling takes place rapidly as in lava flows (volcanic), the rate at which mineral nuclei form exceeds the rate of growth and an aggregate of many small mineral grains forms. The result is a fine-grained or aphanitic texture, in which individual minerals are too small to be seen without magnification.

Granite - If cooling is slow, the rate of growth exceeds the rate of nuclei formation, and large mineral grains form, thus yielding a coarse-grained or phaneritic texture, in which minerals are clearly visible. Rocks with phaneritic textures are commonly intrusive (plutonic).



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library