Weathering the Parent Material

As bedrock goes through weathering, it is broken down into small pieces. The surface experiences more weathering, allowing for equal-sized organic particles to pair with the weathered bedrock. Mineral particles are left as a result of the weathering process. When paired with organic materials, plants will thrive and grow. Plants continue the weathering process and add to the organic material of the soil. This process matures the soil to support more and more plants, creating a cycle.

Source: WeatherSTEM