GEOLOGY

Detailed explanation-1: -Igneous rocks are formed from melted rock deep inside the Earth. Sedimentary rocks are formed from layers of sand, silt, dead plants, and animal skeletons. Metamorphic rocks formed from other rocks that are changed by heat and pressure underground.

Detailed explanation-2: -There are three main types of rocks: sedimentary, igneous, and metamorphic. Each of these rocks are formed by physical changes-such as melting, cooling, eroding, compacting, or deforming-that are part of the rock cycle. Sedimentary rocks are formed from pieces of other existing rock or organic material.

Detailed explanation-3: -Large amounts of granitic intrusions are also associated with regional metamorphic rocks. The most common regional metamorphic rocks are slates, schists and gneisses.

Detailed explanation-4: -Granite. Granite is a hard igneous rock made of clearly visible crystals of various minerals. Basalt. Basalt is a dark-coloured, fine-grained igneous rock. Pumice. Pumice is a light igneous rock with thousands of tiny bubbles in them. 27-Oct-2020