Coal is a widespread resource of energy and chemicals. Although terrestrial plants necessary for the development of coal did not become abundant until Carboniferous time (358.9 million to 298.9 million years ago), large sedimentary basins containing rocks of Carboniferous age and younger are known on virtually every continent, including Antarctica (not shown on the map). The presence of large coal deposits in regions that now have arctic or subarctic climates (such as Alaska and Siberia) is due to climatic changes and to the tectonic motion of crustal plates that moved ancient continental masses over Earth’s surface, sometimes through subtropical and even tropical regions. Coal is absent in some areas (such as Greenland and much of northern Canada) because the rocks found there predate the Carboniferous Period and these regions, known as continental shields, lacked the abundant terrestrial plant life needed for the formation of major coal deposits.
Coal is a flammable sedimentary, organic rock. Coal is a fossil fuel that has been consolidated between the other rock strata and is formed from vegetation. It is mainly composed of carbon, as well as other elements such as hydrogen, sulphur, oxygen, and nitrogen. To form coal seams, the combined effects of heat and pressure over millions of years were altered. The energy received by coal today is the same energy that was absorbed by the plants millions of years back. The majority of coal is used in power generation and metallurgy.
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Coal is a widespread resource of energy and chemicals. Although terrestrial plants necessary for the development of coal did not become abundant until Carboniferous time (358.9 million to 298.9 million years ago), large sedimentary basins containing rocks of Carboniferous age and younger are known on virtually every continent, including Antarctica (not shown on the map). The presence of large coal deposits in regions that now have arctic or subarctic climates (such as Alaska and Siberia) is due to climatic changes and to the tectonic motion of crustal plates that moved ancient continental masses over Earth’s surface, sometimes through subtropical and even tropical regions. Coal is absent in some areas (such as Greenland and much of northern Canada) because the rocks found there predate the Carboniferous Period and these regions, known as continental shields, lacked the abundant terrestrial plant life needed for the formation of major coal deposits.
Answer:
Coal is a flammable sedimentary, organic rock. Coal is a fossil fuel that has been consolidated between the other rock strata and is formed from vegetation. It is mainly composed of carbon, as well as other elements such as hydrogen, sulphur, oxygen, and nitrogen. To form coal seams, the combined effects of heat and pressure over millions of years were altered. The energy received by coal today is the same energy that was absorbed by the plants millions of years back. The majority of coal is used in power generation and metallurgy.
Explanation:
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