Consider the following statements
1. Though the continental crust has greater thickness it is less dense than the oceanic crust.
2. Deccan plateau is made up of only granite rocks.
3. Granite rock is an example of extrusive igneous rocks.
4. Limestone, sandstone and coal are examples of sedimentary rocks.
Which of the above statement(s) is/are correct?
Consider the following statements
1. Though the continental crust has greater thickness it is less dense than the oceanic crust.
2. Deccan plateau is made up of only granite rocks.
3. Granite rock is an example of extrusive igneous rocks.
4. Limestone, sandstone and coal are examples of sedimentary rocks.
Which of the above statement(s) is/are correct?
The correct option is B Only 1 and 4
Continental crust is less dense than the oceanic crust because continental crust is made of mix of dense and light rocks types while oceanic crust is mainly composed of dense rocks such as basalt.
Magma is composed of molten rock and is stored in earth’s crust while lava is also molten magma which comes out from the interior of the earth on to surface. When this lava cools it solidifies and contains very fine grained structure. These rocks are called as extrusive igneous rocks. Basalt (not granite) is example of same. About 60 million years ago when Indian plate was moving towards Eurasian plate, it passed through reunion hotspot near Madagascar and while passing a lot of flood basalt was poured out from inside the magma chamber of reunion hotspot and this formed Deccan traps.
Rocks Examples
Igneous Granite and basalt
Sedimentary Conglomerate, sandstone, limestone, shale, Coal Metamorphic Gneiss, slate, marble and diamond ->
Continental crust is less dense than the oceanic crust because continental crust is made of mix of dense and light rocks types while oceanic crust is mainly composed of dense rocks such as basalt.
Magma is composed of molten rock and is stored in earth’s crust while lava is also molten magma which comes out from the interior of the earth on to surface. When this lava cools it solidifies and contains very fine grained structure. These rocks are called as extrusive igneous rocks. Basalt (not granite) is example of same. About 60 million years ago when Indian plate was moving towards Eurasian plate, it passed through reunion hotspot near Madagascar and while passing a lot of flood basalt was poured out from inside the magma chamber of reunion hotspot and this formed Deccan traps.
Rocks Examples
Igneous Granite and basalt
Sedimentary Conglomerate, sandstone, limestone, shale, Coal Metamorphic Gneiss, slate, marble and diamond ->
