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Author Question: Why are large areas of North America covered with immature soils characterized by weakly developed ... (Read 22 times)

Collmarie

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on: Jul 16, 2018
Why are large areas of North America covered with immature soils characterized by weakly developed horizons?
 
  What will be an ideal response?

Question 2

How can calcium-rich B horizons form in soils on top of calcium-poor rock in hot and arid regions?
 
  What will be an ideal response?


ambernicolefink

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Reply #1 on: Jul 16, 2018
Answer to Question 1

The immature soils with weakly developed horizons occur where the landscape is unstable and erosion removes any regolith before it chemically weathers into soil. These soils are most obvious in mountainous areas where erosion rates are high and along large-river floodplains where deposition rates are high. Immature soils also occur on areas that continually get fresh deposits of sediment or volcanic material (lava or ash).

Answer to Question 2

The calcium is delivered by the wind as dust particles and in rainfall.


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Collmarie

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Reply #2 on: Jul 16, 2018
Correct answers!


ambernicolefink

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Reply #3 on: Jul 16, 2018
Great! Please up vote :D


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