Читать книгу Applied Soil Chemistry - Группа авторов - Страница 53

Reduction and oxidation reaction influences the process of chemical weathering. As per Jackson et al. in the year 1948 [37], in equation of weathering, positive sign is assigned to oxidation. Hence, iron occurrence in ferrous state or reduction favoring conditions enabled the formation of montmorin in the intermediate stage of weathering as per Wendricks and Ross in the year 1945 [107]. Moreover, occurrence of iron in ferric state or oxidation favoring conditions favored free oxides and kaolin formation in higher weathering stage. According to Marshall and Humbert et al., in the year 1943 [13], oxidation role in weathering was reported as ferric oxide formation in quartz grains cracks which breaks the quartz crystal. Oxidation rate also has an impact on the accumulated organic matter prevailing in soil which ultimately influences the rate of chemical weathering.