GEOLOGY

Detailed explanation-1: -Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Typically quartz and feldspar; lithic fragments are also common.

Detailed explanation-2: -Texture: Clastic (only noticeable with a microscope). Grain size: 0.06 – 2mm; clasts visible to the naked eye, often identifiable. Hardness: Variable, soft to hard, dependent on clast and cement composition.

Detailed explanation-3: -Based on hardness and color, four main types of sandstone can be recognized: (1) gray sandstone, (2) crystallized sandstone, (3) hard sandstone and (4) carbonate cemented sandstone.