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== == == == == == The cap rock on a coal bed is usually a sedimentary rock, (i.e. shale sandstone etc.) but not always shale. Slate is a metamorphic rock, usually derived from shale that has been exposed to high pressures and temperatures over very long periods of time. Ways to tell the difference between slate and shale:
Slate will have a smooth surface, and possible have light glare at a right angle. Shale will have a dull, sandy surface.
Tap them against something hard. Slate will make a "clink" noise, almost like porcelain or ceramic, where shale will make a "thud" sound.
Rub it against your teeth. Slate will be smooth, shale will be gritty.
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Wiki User
∙ 2009-01-02 22:45:37
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All the names of rocks?
Sandstone,Limestone,Granite,Shale,Marbel,chalk,Dolostone,Chert,slate,Coal,Scoria,Quarts,Basalt,Slag,Obsidian,Gabbro,Saprolite,Pegmatite,Pumise That is most but all i can name of the top of my head ! sandstome,limestone,graintie,shale,marbel,chalk,dolostone,chert,slate,coal,scoria and flint
Shale for road building?
Shale in general is the most abundant of stratified rocks. One of the most popular forms of shale used for building roads is called Marcellus Shale. When this clay shale is nearly pure it is known as argillaceous. When it contains a lot of sand it is arenaceous. You will find that shale varies in color, reddish, very black, or grey. Shale is used mainly for top dressing on roads. To have a good road base slate is recommended.
What is the appearance of a shale rock?
Shale rock can be grayish in colour and has a white marble effect on the top
Why is coal found in layers?
Because all the minerals piled on top of it and pressed down on it so they all squish on top on it
What happened between the formation of Columbia limestone and the marden creek shale?
the creek dried up and made shale, then what could of happened is it made a layer of shale and later limestone formed and made a layer of limestone on top of shale
Who is the voice of the mom in The Lorax?
Top 5000Jenny Slate
What are the top 15 coal-producing states in the United States?
the top 15 coal pruducing stats in the us
What are the top 15 coal producing states in the United states?
the top 15 coal pruducing stats in the us
Where is the greatest amount of the world's carbon found?
China is at the top of coal producers.Other important countries are USA, India, Australia and Russia.
Where is the greatest amount of the worlds carbon found?
China is at the top of coal producers.Other important countries are USA, India, Australia and Russia.
Why is coal usually found in layers?
I think it is because animals died then mud piled on top the another layer of animals and so on.
Top 5 coal producing countries?
Top coal producers in 2006 were: China USA India Australia South Africa
