STONES1. The rocks formed from molten magma, are calledIgneous Rocks2. The rocks formed by gradual disposition, are calledSedimentary Rocks3. The rocks formed due to alternation of original structure due to heat and excessive pressure, are called.Metamorphic Rocks4.Lime stone are generally known asAqueous Rocks/Sedimentary Rocks/Stratified Rocks.Geologically, marble is known asMetamorphic Rocks!.Chemically, marble is known asCalcareous Rocks". Quartzite is a Siliceous Rocks#. Basalt is aExtrusive Igneous Rocks$. Sand stone is aSedimentary Rocks1%. Lime stone is aMetamorphic Rocks11. Laterite is aolcanic Rocks12. Gniess is obtained fromSedimentary!Metamorphic Rocks13. Dolomite is a lime stone which contains carbonate of magnesia upto"#$1&. The colour of statuary marble used for sculptors or!, is..%hite1. Blac! marble generally found in the district of&aipur1!.The rocks having alumina or clayas their ma'or constituents, are known asArgillaceous Rocks1". The hardest roc! is(iamond1#. The softest roc! is..)alc1$. The speci"c gra#ity of mar*le is..+,-+2%. The rocks generally used for roo"ng, is.ranite21. Laterite is found in/,0,22.Durable Durable23. ' stone is re$ected if it absorbs ater more than 12$ 2&. (tone used for ornamental 3or! must beSoft2. Stone used for rubble masonry or! must be4ard2!. Stone used for construction ofretaining alls must be4eavy2". )n stone masonry work, stones *(trati+ed ,ocks- are so placed that the direction of pressure to the plane of bedding isRight Angles 562782#. )n stone masonry works, if stones are so placed that their layers are parallel to the direction of load, they...Split easily and are affected *y moisture2$.a-%n arches, strati+ed stones are placed so that their planes are Radial2$.b- %n cornices, the stones are placed with their natural beds asertical2$.c- %n stone alls, the stones are placed with their natural beds as4ori9ontal 3%. The tendency of stone is , to split alongClea#age31. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth.s surface are called4ypa*yssal Rocks32.The rocks are formed due to pouring of magma at the earth.s surface are calledolcanic Rocks33. /xample of &lutonic roc! is.ranite3&. /xample of 'ypabyssal roc! is(olerite3. /xample of (olcanic roc! is:asalt3!. Relation between Rock and Structure3". /xamples of Sedimentary roc!s.ravel; Sand Stone; .ypsum; orsterite 1?627C =#227C +1?27C Chromites".Granite#.(eipentineStone Uses$.Stone $eig%tMarble!%.Stone State:asalts!1.(tone (tate:asalts!2.&ncient Indian 'emples63.CrystallineIgneous

ock64. Laterite is chemically classifed as Argillaceous Rock65. The main constituents of Calcareous Rock is