The correct answer is: d) A mix of all types.
The rocks found in Mizoram are a mix of all types. The state is located in the northeastern part of India, and its geology is complex. The rocks in Mizoram were formed by a variety of processes, including sedimentation, igneous activity, and metamorphism.
Sedimentary rocks are formed when pieces of other rocks are broken down and transported by water, wind, or ice. These pieces of rock are then deposited in layers, and over time, they are compacted and cemented together to form sedimentary rocks. The most common types of sedimentary rocks in Mizoram are sandstone, shale, and limestone.
Igneous rocks are formed when molten rock, or magma, cools and solidifies. Magma can rise to the surface through volcanoes, or it can cool and solidify below the surface. The most common types of igneous rocks in Mizoram are granite, basalt, and gabbro.
Metamorphic rocks are formed when existing rocks are subjected to heat and pressure. This can happen when rocks are buried deep underground, or when they are involved in mountain building. The most common types of metamorphic rocks in Mizoram are schist, gneiss, and marble.
The rocks in Mizoram are a valuable resource for the state. They are used in the construction industry, and they are also a source of minerals such as coal and limestone.