Not all volcaanicn soils are more fertile
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Do volcanoes create fertile soil?
Onions growing in the volcanic soil of Lanzarote island, Canary Islands, Spain. Volcanoes can be destructive, but volcanic action can lead to the formation of fertile soils.
What is volcanic soil?
Volcanic soil is among the most fertile in the world due to the distinct composition of the volcanic ash. Silica and oxygen take up the largest percentage of elements released in the event of a volcanic eruption; other elements include carbon dioxide, sulfur dioxide, and hydrogen chloride.
How does volcanic eruptions affect the soil?
This can make it more difficult for some plant life to grow, and the soil is widely considered less fertile. If there is a high concentration of hydrogen ions in the ash and lava, it could be detrimental to the soil, although it could correct itself over longer periods of time.
Why is the soil so fertile near Mount Vesuvius?
In regions near Mount Vesuvius, there are expansive tracts of fertile lands as a result of the volcanic activity thousands of years ago. The fertility of the soil in this region is attributed to the deposition of volcanic materials rich in minerals which are then broken down or weathered by erosion or action of water.