FACTOID # 23: Wisconsin has more metal fabricators per capita than any other state.
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 


FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:



(* = Graphable)



Encyclopedia > Coal bed
This article is in need of attention.
Please improve it (http://en.wikipedia.org/w/index.php?title=Coal_bed&action=edit) in any way you see fit.

Coal Bed

[Coal] consists of more than 50 percent by weight and more than 70 percent by volume of carbonaceous material (including inherent moisture). Coal is formed from plant remains that have been compacted, hardened, chemically altered, and metamorphosed by heat and pressure over geologic time. It is suspected that coal was formed from ancient plants that grew in swamp ecosystems. When such plants died, their biomass was deposited in anaerobic, aquatic environments where low oxygen levels prevented their decay and oxidation (rotting and release of carbon dioxide). Successive generations of this type of plant growth and death formed thick deposits of unoxidized organic matter that were subsequently covered by sediments and compacted into carbonaceous deposits such as peat or bituminous or anthracite coal. Evidence of the types of plants that contributed to carbonaceous deposits can occasionally be found in the shale and sandstone sediments that overlie coal deposits, and with special techniques, within the coal itself. The greatest coal-forming time in geologic history was during the Carboniferous era (280 to 345 million years ago).

This multiplicity of layers, sediments over the proto-coal biomass, are thus metaphorically likened to a bed - blankets over sheets and mattress (Bedrock or other substrates). Thus the terms [Bed of Coal] and Coal Bed

  Results from FactBites:
Bed and Breakfast - Information about Bed and Breakfast (461 words)
Each bed and breakfast is a reflection of the innkeeper's own unique warm and gracious hospitality.
Bed and breakfast accommodation is one of the fastest growing tourism lodging options all over the world.
The bed and breakfast culture is well established in developed countries in Europe, North America and tourist destinations most everywhere.
Coal bed methane extraction - Wikipedia, the free encyclopedia (333 words)
Coal bed methane extraction (CBM extraction) is a method for extracting methane from a coal deposit.
The methane is chemically bound onto the coal macerals and is released when the coal seam is depressurised.
In many cases, the exact same coal seams were used to supply water for both domestic and agricultural uses, hence the concern about well draw downs.
  More results at FactBites »



Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m