« previous next »

Author Question: When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as ... (Read 31 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 women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

You're So Vein You're So Vein
Artery and Vein (structure) Artery and Vein (structure)
A) Sectioned kidney; (B) renal artery and vein. A) Sectioned kidney; (B) renal artery and vein.
Oceanic Deposits Oceanic Deposits
Risk & Aseptic Processing - RABs Filling Line Risk & Aseptic Processing - RABs Filling Line
Hydrothermal Vent Community Hydrothermal Vent Community
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library