Understanding the C Horizon in Soil Science

What is the position of the C horizon in the soil profile?

• Above the bedrock

• Below the bedrock

• Below the O horizon

• Above the A horizon

Which process is NOT involved in the formation of the C horizon?

• Deposition

• Biological weathering

• Chemical weathering

• Mechanical weathering

What is the primary composition of the A horizon?

• Bedrock

• Mineral and organic mix

• Pure minerals

• Only organic material

How long can it take for soils to develop a deep horizon?

• 50 to 100 years

• 500 to 800 years

• 100 to 400 years

• 1000 years or more

What is the average depth of the C horizon?

• 10 to 20 centimeters

• 80 to 90 centimeters

• 40 to 50 centimeters

• 60 to 70 centimeters

Which horizon is known for the accumulation of clay minerals?

• A horizon

• B horizon

• C horizon

• O horizon

What is the main characteristic of the C horizon?

• High organic content

• Mineral layer of broken down rock

• Rich in clay minerals

• Contains large amounts of water

Why is there little root development in the C horizon?

• High organic content

• Lack of nutrients

• Compaction and depth

• Excessive water

What is the difference between C1 and C2 subordinates?

• C2 is closer to the O horizon

• C1 is closer to the A horizon

• C2 has smaller sediment size

• C1 is closer to the B horizon

What marks the transition from the C horizon to the R horizon?

• Consolidated solid rock

• Increase in organic material

• Decrease in mineral content

• Presence of water