[Solved] rocks and minerals

QUESTION 1

  1. Minerals must be solid, non-organic, and have a definite internal structure.




2 points

QUESTION 2

  1. Which property of minerals describes how they break along given planes?

3 points

QUESTION 3

  1. Gypsum and quartz can look very similar. Which test can help you distinguish them?

3 points

QUESTION 4

  1. Sphalerite is an important ore source of lead.




2 points

QUESTION 5

  1. The Bushveld area of South Africa is a well-known source of which economic mineral?

3 points

QUESTION 6

  1. A rock is defined as

3 points

QUESTION 7

  1. List and describe at least four different types of luster that minerals may display.

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4 points

QUESTION 8

  1. An igneous rock with small, barely discernible crystals most likely formed

3 points

QUESTION 9

  1. Granite is what type of igneous rock?

3 points

QUESTION 10

  1. Consider the igneous rocks gabbro, basalt, and peridotite. Discuss the environment of formation for each of these three rocks, specifically addressing where they formed and what types of minerals must have been in the material from which they formed.

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4 points

QUESTION 11

  1. Komatiite is a well-known source of copper ore.




2 points

QUESTION 12

  1. Pillow lava forms when lava spills over dry land and cools quickly.




2 points

QUESTION 13

  1. Which processes are directly responsible for the formation of sediment?

3 points

QUESTION 14

  1. Which of the following sedimentary rocks is non-clastic?

3 points

QUESTION 15

  1. Which of the following sedimentary rocks has the SMALLEST grain size?

3 points

QUESTION 16

  1. Give an example of an organic non-clastic sedimentary rock, a chemical non-clastic sedimentary rock, and a clastic sedimentary rock. Discuss the environment and mode of formation for each example.

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4 points

QUESTION 17

  1. Fossils are most often found in igneous rocks but can sometimes be found in sedimentary rocks such as fossiliferous limestone.




2 points

QUESTION 18

  1. The bands of differently colored or structured materials in some sedimentary rocks are called

3 points

QUESTION 19

  1. Sedimentary rocks can form at the earth’s surface or within the earth.




2 points

QUESTION 20

  1. Layering within metamorphic rocks is called

3 points

QUESTION 21

  1. Which of the following can contribute to metamorphosis of a rock?

3 points

QUESTION 22

  1. What is the protolith for the metamorphic rock quartzite?

3 points

QUESTION 23

  1. Which metamorphic rock is commonly formed by contact metamorphism and has non-foliated texture?

3 points

QUESTION 24

  1. Gneiss is often found in regions that have undergone tectonic deformation.




2 points

QUESTION 25

  1. The metamorphic rock slate is commonly used for roofing materials.




2 points

QUESTION 26

  1. Define each of the following: contact metamorphism and regional metamorphism. Give an example of each.

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4 points

QUESTION 27

  1. Which of the following processes changes molten rock into an extrusive igneous rock?

3 points

QUESTION 28

  1. Which of the following processes is involved in the creation of an igneous rock?

3 points

QUESTION 29

  1. A rock’s change in shape due to forces acting on it is called

3 points

QUESTION 30

  1. Slippage of one rock block past another is called jointing.




2 points

QUESTION 31

  1. In what type of fault does the hanging wall move upward in relation to the footwall?

3 points

QUESTION 32

  1. What is the hanging wall?

3 points

QUESTION 33

  1. Dip is expressed as a compass direction and strike is expressed as an angle.




2 points

QUESTION 34

  1. This symbol is from a geologic map. What does the number 15 represent? A symbol made from a diagonal line that begins in the upper left and ends in the lower right. Half way down the diagonal is a small triangle that points up from the line. The number 15 appears just to the right of the triangle.

3 points

QUESTION 35

  1. A contour interval of 20 feet means that every foot on a given topographic map represents 20 feet on the earth.




2 points

QUESTION 36

  1. On a topographic map, contour lines represent changes in rock ages.




2 points

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