Identify the types of metamorphic rocks formed from each of the following when exposed to heat and pressure: ● Limestone ● Sandstone ● Shale ● Granite

When exposed to heat and pressure, the following types of metamorphic rocks are formed from different parent rocks:

1. Limestone - Under heat and pressure, limestone transforms into Marble, a metamorphic rock characterized by its crystalline structure and often displaying a range of colors due to mineral impurities.
2. Sandstone - When subjected to heat and pressure, sandstone can change into Quartzite, a metamorphic rock primarily composed of quartz grains fused together.
3. Shale - The metamorphic rock that forms from shale under heat and pressure is Slate. Slate is a fine-grained, foliated metamorphic rock commonly used in roofing and flooring due to its ability to split into thin sheets.
4. Granite - Granite, when subjected to high heat and pressure, can transform into Gneiss, a banded or foliated metamorphic rock with alternating layers of different minerals, often displaying distinctive banding patterns.