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Minerals And Rocks
Question
What is meant by sedimentary rocks? Describe the mode of formation of sedimentary rocks.
Solution
Sedimentary rocks are types of rock that are formed by the deposition and subsequent cementation of that material at the Earth's surface and within bodies of water.
Sedimentary rocks are formed from those materials which are deposited at favourable sites by agents of denudation such as river, wind, glacier and sea waves. The process is called the lithification.
The sedimentary rocks are formed in different ways.
The sedimentary rocks are formed in different ways.
(i)The layers of deposits : Loose materials or sediments are deposited in the layers.
(ii)Stratification : The sediments are deposited in the layers. Materials such as clay, silt, sand, etc. settle down in due course.
(iii)Solidification: The loose material gets converted into hard and compact rocks.
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Some More Questions From Minerals And Rocks Chapter
What is a sedimentary rock ?
Write some main sedimentary rocks.
Which important minerals are found in metamorphic rocks?
State one example of hard rock and soft rock.
The process of physical and chemical changes affecting sediments during their conversion into solid rocks.
Structure in metamorphic rocks in which minerals are drawn out into long, thin pencil like objects all in parallel alignment.
The smooth planer surfaces of weakness along which minerals have pronounced tendency of split.
Few large crystals imbedded into material of smaller crystals.
What do you mean by rocks ? Name the three major classes of rocks.
What is an igneous rock? Describe the method of formation and characteristics of igneous rock.
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