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

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
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