Question

How is blue black soil form please answer i will thank you answer in brief​

Answer 1

Sodium causes the organic matter (humus) to disperse more readily and spread over the soil particles, making the soil look darker (blacker). Iron – Red, yellow, grey and bluish-grey colours result from iron in various forms. ... Poorly drained soils are often dominated by blue-grey colours often with yellow mottling.

Answer 2

Answer:

Sodium causes the organic matter (humus) to disperse more readily and spread over the soil particles, making the soil look darker (blacker). Iron – Red, yellow, grey and bluish-grey colours result from iron in various forms. ... Poorly drained soils are often dominated by blue-grey colours often with yellow mottling.