How are coal seams formed?

Coal seams are formed from dead and decaying organic matter. Generally, this matter came from ancient peat bogs that died and fell into shallow, stagnant waters. As this material decayed, it became peat over time. As this peat was buried under sediment, the temperature increased and the pressure became greater.Click to see full answer. Similarly one may ask, how is coal formed short answer?Coal is formed from plants remains that got buried deep under the earth’s crust. Over a large period of time, the chemical and physical properties of these plants remains word change through geological actions that led to the creation of this solid material known as coal.Also, how thick are coal seams? A coal seam of around 3–4 m thickness is, generally, observed to provide normal working height for efficient extraction and is suitable for most of the conventional mining methods. Considerable increase in thickness of a coal seam makes it challenging for efficient underground mining and is called thick. One may also ask, what does coal seam mean? Definition of coal seam. : a bed of coal usually thick enough to be profitably mined.Is coal being formed today?The process of coal formation is still taking place today, says Bailey. “The precursor to coal is called peat, and that is just uncompressed plant matter.” It generally starts with burial of the peat by other sediments as a result of a volcanic eruption, migration of a river or a change in sea level.