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Rocks

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by

Georgia Clark

on 20 April 2010

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Transcript of Rocks

Rock Information
Igneous Rocks By Georgia Clark
Sedimentary Rocks Metamorphic Rock Types of Igneous Rock: Basalt, Granite, Gabbro, Felsite and Peridotite Properties of Igneous Rock Igneous rocks usually appears with a well mixed texture without fossils, bands or layers, they may contain vesicles and they do not react with dilute acid.
Where Igneous Rocks are found Igneous rock can be found on the surface in areas of current or past volcanism. It can be found deep underground nearly anywhere, or in areas of past or present glaciation, where igneous rock has been eroded and deposited. Uses of Igneous Rock Lava soap, Building materials and Landscaping Some types of Sedimentary Rocks


Buaxite, Limestone, Mudstone, Sandstone, Chalk and Claystone Properties of Sedimentary Rocks Lithification (cementation, compaction and hardening)
Stratification - layering
Types
Where Sedimentary Rocks are found Sedimentary rocks can be found anywhere rock particles, clay, and organic matter has deposited itself and lithified from overburden pressure or chemical precipitation from a saturated solution. Uses of Sedimentary Rocks They are used for gravel and other household utensils another use is as chalk on a black board in primary schools and other places.
Types of Metamorphic Rock Marble, slate and schist Properties of Metamorphic Rock Metamorphic rocks can be foliated or non-foliated.
Foliation gives the appearance of parallel light and dark bands, or is simply a platy or flaky texture. Slate, gneiss, and schist display foliation. Deformations in the directions of the banding can also occur.



Where is Metamorphic Rock are found Everywhere at some depth, and on the surface where uplift and erosion have allowed them to be visible. They can also be found as pebbles or boulders in glacial drift, deposited in areas in which they do not normally appear.

Uses of Metamorphic Rocks Floor tiles, counter tops, statues, roofing tiles, black boards, silica, building components, monuments and facings
Full transcript