Question

How is black soil formed?

Answer 1

Andisols (black soil)

Explanation:

Andisols have high volcanic ash content subjected to extensive weathering. They have low bulk density, potential for wind erosion, amorphous clays, high macroporosity, low soil strength under physical disturbance. In many islands of the Pacific Ocean, andisols can be seen. Chile, New Zealand, Ecuador, east central Africa, Central America, Spain, France, Italy, the USA, and many other countries include Andisols.