FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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O
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B
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C
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R
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Detailed explanation-1: -The R horizon is the underlying bedrock, such as limestone, sandstone, or granite.
Detailed explanation-2: -It is usually the parent material of the soil. The R horizon is the underlying bedrock, such as limestone, sandstone, or granite. It is found beneath the C horizon.
Detailed explanation-3: -D Horizon (Bedrock) – This layer is comprised of consolidated rock (tight, unbroken, large formations of rock). There is very little organic material and roots do not dig down this deep. Note – As you can see, the soil layers gain stability as you go down. Bedrock can be anywhere between 7 and 150 feet deep.
Detailed explanation-4: -C Horizon: This horizon starts to from as bedrock begins to weather.
Detailed explanation-5: -R horizons denote the layer of partially weathered or unweathered bedrock at the base of the soil profile. Unlike the above layers, R horizons largely comprise continuous masses (as opposed to boulders) of hard rock that cannot be excavated by hand.