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Author Question: Which of the following is not a characteristic of clastic sedimentary rock? A) They are composed ... (Read 108 times)

renzo156

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on: Jul 29, 2018
Which of the following is not a characteristic of clastic sedimentary rock?
 
  A) They are composed of small pieces of weathered rock.
  B) They are classified by particle size.
  C) They are created by precipitation.
  D) They may contain organic matter.

Question 2

Pebbles of granite are very common in a conglomerate, whereas pebbles of marble are relatively uncommon. Why is this? What are the properties of the different minerals in these rocks?
 
  What will be an ideal response?


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jojobee318

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: Granite is predominantly composed of quartz and feldspar minerals. These minerals (especially quartz) are very resistant to weathering. Conversely, marble is metamorphosed limestone. Even though marble is hard and durable as a building stone it does succumb to weathering. With time, marble may dissolve from the conglomerate.


renzo156

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Reply 2 on: Jul 29, 2018
Gracias!

mcarey591

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Reply 3 on: Yesterday
Excellent

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