GEOLOGY

Detailed explanation-1: -Warm moist climates are thought to produce broad bands of bright coal, a type of bituminous coal characterized by its fine banding and high concentrations of nitrogen, sulfur, and moisture.

Detailed explanation-2: -The bulk of the coal driving the Industrial Revolution and contributing to global warming today has been deposited during the Carboniferous period (359–299 million years ago), resulting in a significant drawdown of atmospheric carbon dioxide at that time.

Detailed explanation-3: -The formation of coal begins in areas of swampy wetlands where groundwater is near or slightly above the topsoil. Because of this, the flora present produces organic matter quickly-faster in fact than it can be decomposed. In these areas, layers of organic matter are accumulated and then buried.

Detailed explanation-4: -In India, coal occurs in rock series of two main geological ages. The Gondwana coal was formed over 200 million years ago. The tertiary deposits are about 55 million years old. The major sources of Gondwana coal are located in the Damodar valley (West Bengal-Jharkhan).

Detailed explanation-5: -The conditions that would eventually create coal began to develop about 300 million years ago, during the Carboniferous period. During this time, Earth was covered in wide, shallow seas and dense forests. The seas occasionally flooded the forested areas, trapping plants and algae at the bottom of a swampy wetland.