Chapter 5 - Weathering and Soil. 9 (1). Why are some minerals stable several kil

Question

Chapter 5 - Weathering and Soil.
9 (1). Why are some minerals stable several kilometers underground but unstable at the earth's surface?
10 (6). How can mechanical weathering speed up chemical weathering?

Chapter 6 - Sedimentary Rocks.
11 (3). What do mud cracks tell about the environment of deposition of a sedimentary rock?
12 (7). Describe three (3) different origins of limestone.
13 (11). How do evaporites form? Name two evaporites.

Chapter 7 - Metamorphic Rocks.
14 (2). List at least three (3) sources of heat for metamorphism?
15 (3). How do regional metamorphic rocks differ in texture from contact metamorphic rocks?

Extra Credit.
Chapter 3 - Igneous Rocks.
16 (7). Why is a higher temperature required to form magma at the oceanic ridges than in the continental crust? Hint: Bowen’s reaction Series.
Chapter 5 - Weathering and Soil.
17 (4). Why do stone buildings tend to weather more rapidly in cities than in rural areas?

Explanation / Answer

due to high pressure and temperature, some minerals are stable several kilometers underground.

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