QUESTION 1 Chapter 3.1.2. Box 3.1. True/False. An increase in temperature is the

Question

QUESTION 1 Chapter 3.1.2. Box 3.1. True/False. An increase in temperature is the main cause of melting in Earth's upper mantle True O False QUESTION 2 Chapter 3.1.2. Box 3.1. What is decompression melting? When crust melts as a result of high compressive stresses in subduction zones O b When hot mantle rises to shallow depths where lower pressures induce melting When rocks on planets with no atmosphere come in contact with the vacuum of space Od When ices at the base of glaciers melt because of the weight of the glacier above

Explanation / Answer

1) False

  rather main cause of melting in earth's upper mantle is Carbon dioxide, apart from this inert gases helium and argon are also considered to be heat producing elements.

2) decompression melting is:

  when hot mantle rises to shallow depths where lower pressures induce melting.

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