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Coal

Sedimentary Rocks

Coal is a combustible black or brownish-black sedimentary rock formed as layers called coal seams. It originates in ancient wetlands called coal forests, where plant matter that fell into the water was protected from oxidation and biodegradation, then compressed and hardened by the heat and pressure of deep burial over millions of years into peat, then coal. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Kind
Rock 1
Formation Class
Sedimentary, organic (formed from compressed and heated plant matter buried in ancient coal-forest wetlands) 1
Colour
Grey or Black 3
Colour
Brown 3
Classification
Classification
Sedimentary Rock 1
Use
Fuel / Energy Source 2
Wikipedia 'Coal' states this use (or use-bearing statement); earth5 pass.
Connections

Associated With

Horseshoe Canyon Formation, Geological Formations
Source Horseshoe Canyon Formation (Wikipedia)
Pennine Coal Measures Group, Geological Formations
Source Pennine Coal Measures Group (Wikipedia)
Transantarctic Mountains, Geological Formations
Source Transantarctic Mountains (Wikipedia)

Caused By

Sedimentation, Processes
Source Coal (Wikipedia)

Classified As

Sedimentary Rocks, Subcategories

In Discipline

Geology, Disciplines
Sources
1. Coal (Wikipedia)
Wikimedia Foundation
  • Lead section
    Coal is a combustible black or brownish-black sedimentary rock, formed as layers called coal seams.
  • Infobox, composition
    when plants decay into peat which is converted into coal by the heat and pressure of deep burial over millions of years.
  • Caused By: Sedimentation, Lead paragraph
    Coal is a combustible black or brownish-black sedimentary rock, formed as layers called coal seams
View the Source
2. Wikidata: Coal
Wikidata Q24489
3. Geology.com: Coal
Geology.comArticle text
Quote, Article text
It is a peat that has been transformed into a rock, and that rock is a brown-black coal.
View the Source
Horseshoe Canyon Formation (Wikipedia)
  • Associated With: Horseshoe Canyon Formation, Lead paragraph
    It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
  • Associated With: Horseshoe Canyon Formation, Lead, rock Coal
    It is of Late Cretaceous age, Campanian to early Maastrichtian stage (Edmontonian Land-Mammal Age), and is composed of mudstone, sandstone, carbonaceous shales, and coal seams.
View the Source
Pennine Coal Measures Group (Wikipedia)
  • Associated With: Pennine Coal Measures Group, Lead paragraph
    The Pennine Coal Measures Group is a lithostratigraphical term referring to the coal-bearing succession of rock strata which occur in the United Kingdom within the Westphalian Stage of the Carboniferous Period.
  • Associated With: Pennine Coal Measures Group, Lead, rock Coal
    The Pennine Coal Measures Group is a lithostratigraphical term referring to the coal-bearing succession of rock strata which occur in the United Kingdom within the Westphalian Stage of the Carboniferous Period.
View the Source
Transantarctic Mountains (Wikipedia)
Associated With: Transantarctic Mountains, Article text, rock Coal
Quote, Associated With: Transantarctic Mountains, Article text, rock Coal
The sedimentary layers include the Beacon Supergroup sandstones, siltstones, and coal deposited beginning in the Silurian period and continuing into the Jurassic.
View the Source
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