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The coal in use today started to form over 300 million years ago as living trees, ferns and other types of plant material. Coal is a nonrenewable resource because the time it requires for formation far exceeds the rate at which man uses it. ... The quality of coal depends on when miners remove it from the ground during the coalification process ...
Peat forms when plant material does not fully decay in acidic and anaerobic conditions. It is composed mainly of wetland vegetation: principally bog plants including mosses, sedges, and shrubs. As it accumulates, the peat holds water. This slowly creates wetter conditions that .
coal comes from plants, and plants get their energy from the sun, the energy in coal also came from the sun. Th e coal we use today took millions of years to form. We can't make more in a short time. Th at is why coal is called nonrenewable. 300 million years ago Before the dinosaurs, many giant plants died in swamps. 100 million years ago
Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity.It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel in the United States.
Coal forms when dead plant material builds up and up to form peat, which is the first step. This is compacted between layers of sedimentary rock, forming a rock called lignite.
Underground mining is required when the coal lies deeper than 200 feet below ground level. The depth of most underground mines is less than 1,000 feet, but a few go down as far as 2,000 feet. In underground mines some coal must be left untouched in order to form .
How did oil get thousands of feet below the ground? Close. 1. Posted by. u/Arizona-Willie. 3 years ago. Archived. How did oil get thousands of feet below the ground? Oil and coal supposedly come from trees and animals that were buried for millions of years. They are often thousands of feet deep.
The hotter and/or longer the heat is applied, the harder and blacker the deposit on the tray. Basically, the blackened pie filling might be thought as a form of low grade coal. Wood is made out of cellulose, a sugar. Consider what happens if you quickly bury a large amount of vegetable material in the ground.
Almost all geochemists believe petroleum results from a few million years of decay of once-living organisms. "We can tell that by looking at biomarkers in the oils," Kenneth Peters, an organic ...
How Does Coal Form? Coal forms from the accumulation of plant debris, usually in a swamp environment. When a plant dies and falls into the swamp, the standing water of the swamp protects it from decay. Swamp waters are usually deficient in oxygen, which would react with the plant debris and cause it to decay.
Processing the Coal. After coal comes out of the ground, it typically goes on a conveyor belt to a preparation plant that is located at the mining site. The plant cleans and processes coal to remove dirt, rock, ash, sulfur, and other unwanted materials, increasing the heating value of the coal.
The burning of coal, oil and wood as fuel can cause mercury to become airborne, as can burning wastes that contain mercury. This airborne mercury can fall to the ground in raindrops, in dust, or simply due to gravity (known as "air deposition").
Many U.S. coal beds are very near the ground's surface, and about two-thirds of coal production comes from surface mines. Modern mining methods allow us to easily reach most of our coal reserves. Due to growth in surface mining and improved mining technology, the amount of coal produced by one miner in one hour has more than tripled since 1978.
Dec 15, 2017· All this coal comes from mines, which are either underground or above-ground ("surface"). Both forms carry serious ecological impacts, and both are considered extremely dangerous: underground mining remains one of the United States' most hazardous occupations, killing dozens of miners every year.
Many people believe that diamonds are formed from the metamorphism of coal. That idea continues to be the "how diamonds form" story in many science classrooms. Coal has rarely - if ever - played a role in the formation of diamonds. In fact, most diamonds that have been dated are much older than ...
Coal Production. Coal production is the amount of coal mined and taken to market. Where does mining take place in the United States? Although coal is mined in 27 states, more coal is mined in eastern states, especially coal that is taken from underground mines, than in western states.
How does coal form in the ground - Answers. When vegetation in the carboniferous era fell on the ground, it rotted (decomposed) to form peat. As sediments kept accumulating over the peat, the peat hardened to form coal.
Apr 01, 2013· So where did all this vegetation buried in the coal beds come from? And if all these coal beds were formed during the year-long Genesis Flood only about 4,300 years ago, how did we get all this coal so quickly? The Quantity of Vegetation Required These new ideas can explain the growth of the vegetation now in the coal beds.
Therefore, geologists have long assumed that coal is a form of peat created by the heat and pressure of deep burial. The geologic process of turning peat into coal is called "coalification." Coal beds are much, much larger than peat bogs, some of the tens of meters in thickness, and they occur all over the world. ...
Coal is an abundant fuel source that is relatively inexpensive to produce and convert to useful energy. However, producing and using coal affects the environment. Effects of coal mining. Surface mines (sometimes called strip mines) were the source of about 63% of the coal mined
Dec 06, 2017· Another form of coal mining, conducted mostly in Central Appalachia, is called mountain top removal, a highly destructive process of flattening entire mountains to uncover thin coal seams that are not accessible by traditional underground methods. After clearcutting forests and removing vegetation, explosives are used to blast away the tops of ...
Total mass of kerogen on planetary scale. Though it is generally present in very small proportions in the sediments, all kerogen on earth represents a total mass of 10.000.000 billion tonnes. 0,1% only of this kerogen (that is a thouh of the total organic matter present in sediments) will turn into coal (which still represents 10.000 billion tonnes !), and gas and oil each represent 0,003 ...
Other major coal users are the cement, food, paper, automobile, textile and plastic industries. Another important industrial use is to provide coke for iron and steel industries. Bituminous coal derivatives, or by-products can be changed into many different chemicals form which we can make paint, nylon, aspirin and many other items.
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