« previous next »

Author Question: When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as ... (Read 73 times)

karen

  • Hero Member
  • *****
  • Posts: 537
on: Jul 15, 2018
When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as gold or silver are common in ________.
 
  A) rocks of a contact-metamorphic zone that formed around a shallow granite pluton
  B) pyroclastic materials erupted from a stratovolcano
  C) impact structures from meteorites
  D) rocks that form in high-pressure subduction zones

Question 2

The mineral bauxite is refined to produce ________ for economic use.
 
  A) iron
  B) aluminum
  C) copper
  D) gold


annierak

  • Sr. Member
  • ****
  • Posts: 340
Reply #1 on: Jul 15, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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.

Common locations of venous thrombosis. (A) The most common sites of deep vein thrombosis. (B) DVT ex Common locations of venous thrombosis. (A) The most common sites of deep vein thrombosis. (B) DVT ex
A, Jugular neck vein distention; A, Jugular neck vein distention;
A beveled tip helps the needle penetrate skin and vein with minimal damage. A beveled tip helps the needle penetrate skin and vein with minimal damage.
Fissure Fissure
Typical vein patterns in eudicot and monocot leaves Typical vein patterns in eudicot and monocot leaves
Video: Griffith's experiments

For a complete list of videos, visit our video library