Soils of Mizoram: Types, Characteristics, Distribution, Erosion & Map The soil of Mizoram is closely related to the state's rugged hill topography, sedimentary geology, high monsoon rainfall, dense vegetation and long history of shifting cultivation. Mizoram is one of the most mountainous states of Northeast India, and consequently its soils differ considerably from the extensive alluvial soils of the Brahmaputra and Barak plains. Most soils of Mizoram are residual hill soils formed through the weathering of sedimentary rocks, particularly shale, sandstone and siltstone. Red and yellow soils dominate much of the hill country, while lateritic soils occur locally over selected ridges and uplands. Narrow valleys and river corridors contain transported alluvial and colluvial soils , which are among the state's most valuable areas for permanent agriculture. The soils are generally acidic because Mizoram receives abundant rainfall and experiences strong leaching. I...