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Q: How a coal seam might be used as a key bed?
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What are coal beds?

A layer of coal under the ground is sometimes called a coal bed.


What geologist wants to locate a horizontal coal bed on a soil-covered slope where soil creep is active A distinctive sandstone bed underlies the coal bed On the basis of weathered sandstone fragm?

A very dumb one.


Why is coal an unusual sedimentary rock?

First of all coal is not an unusual sedimentary rock, it is very abundant for the time being. The following is a tutorial from the supplied web site: Coal is clearly made up of lots of compressed bits of dead plants. But when we walk around in the world we usually see old bits of wood and leaves decaying and rotting away (that is, getting eaten by bacteria, insects, and all sorts of organisms involved in decay and recycling of organic matter). For thick layers of plant stuff to get fossilized as coal, something must be going on. Coal Formation starts with accumulation of organic matter (bits of dead plants) in a low oxygen setting such as a peat bog. The organic matter accumulates and forms a bed of peat. The peat bed gets buried by other sediments and under heat and pressure begins to transform to a low grade coal - a Lignite. More heat and pressure further metamorphose the lignite into Bituminous coal. Even more heat and pressure metamorphose the bituminous coal into a nice hard shiny Anthracite. Coal is usually classified into three grades: Lignite, brown coal; Bituminous coal, soft coal; and Anthracite, hard coal. Anthracite is dense, nice and hard, and shiny. The first step in the formation of coal is the accumulation of plant debris in low oxygen conditions, such as in this damp low spot on a moor. Peat exposed to heat and pressure from burial beneath other sediments becomes compressed and chemicaly changes into low grade coals such as this lignite, and under further heat and pressure is converted to higher grade coals. The pressure from overlying sediments that bury a peat bed will compact the coal. Peats transform to low grade lignites when they are compressed to about 20% of their original thickness. Lignite typicaly transforms to bituminous coal as it is compressed further and heated to between 100 and 200°C. This drives much of the water and other volitiles from the coal. Longer exposure to elevated temperature will further drive volatiles from the coal, and drive chemical reactions that produce anthracite. Anthracite coals are typicaly compressed to 5-10% of the orginal thickness of the peat bed, and contain less than 10% water and other volatiles.


What is bed rock?

a bed rock is the bottom layer of the soil


Particles that roll and slide along the stream bed make up the of the stream?

Bed Load

Related questions

Does coal oil same as fossil fuels?

I believe you mean coal bed gas or coal bed methane which is a fossil fuel.


What are coal beds?

A layer of coal under the ground is sometimes called a coal bed.


What does CBM abbreviate?

coal bed methane


What geologist wants to locate a horizontal coal bed on a soil-covered slope where soil creep is active A distinctive sandstone bed underlies the coal bed On the basis of weathered sandstone fragm?

A very dumb one.


Where might one purchase iron bed frames online?

One might purchase iron bed frames online from the American Iron Beds website. The website has a variety of iron bed frames that can be used to fit any type of mattress.


How to wash a bed canopy?

The best way to was a bed canopy is by hand. If you wash it in the washing machine it could tear or a seam could fall loose. A dry cleaner is a good option but can be spendy.


What has the author Esa Kurkela written?

Esa Kurkela has written: 'Pressurized fluidized-bed gasification experiments with wood, peat and coal at VTT in 1991-1992' -- subject(s): Coal gasification, Fluidized-bed combustion


What is green coke CBM?

Green = environmentally friendly (non-polluting). Coke = coal that has been heated in the absence of air (contains more energy than the same volume of coal). CBM = coal-bed methane (naturally occurring gas found in coal beds). It is a greenhouse gas if allowed to escape into the atmosphere, but if captured it can be used as a non-polluting fuel - probably to turn the coal into coke.


Can a hammock be used as a bed?

yes, unless its raining outside. then you might get sick. and that's just no good.


Person confined to bed are less likely to have bedsores if they used a water bed than an ordinary bed explaine why is this so?

check out this website http://www.waterbed.org/faq.html#backpain hopefully it might answer at least part of your question


How much coal dust can be fed to the fluidized bed combustion furnace through 4 Inch size and 6 Inch size Under Bed Coal feeding nozzle?

Assuming the measurements are correct then I would guesstimate that that would be the exact size required.


What has the author A Stanley Thompson written?

A. Stanley Thompson has written: 'Instabilities in a coal-burning fluidized bed' -- subject(s): Combustion, Fluidized-bed furnaces