Diffrent type of rocks
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Diffrent type of rocks
Song Thu Oct 30, 2008 10:13 am
There are three types of rock
1. Igneous:these are rocks that solidified directly from molten silicates, which geologists call magma. Examples are: granite, basalt, pumice and flint (which is a form of quartz).
2. Sedimentary:these are formed when igneous rocks are eroded as a sediment under the sea. Fossils are often found in this layer. Examples are limestone, chalk, sandstone.
3. Metamorphic:these are made up of igneous and sedimentary rocks of all ages which have been subjected to intense pressure. Examples are: slate, marble, quartzite.
1. Igneous:these are rocks that solidified directly from molten silicates, which geologists call magma. Examples are: granite, basalt, pumice and flint (which is a form of quartz).
2. Sedimentary:these are formed when igneous rocks are eroded as a sediment under the sea. Fossils are often found in this layer. Examples are limestone, chalk, sandstone.
3. Metamorphic:these are made up of igneous and sedimentary rocks of all ages which have been subjected to intense pressure. Examples are: slate, marble, quartzite.
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Join date : 2008-10-22
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