Download Rocks - Australian Curriculum Lessons

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Transcript
Rocks
Sedimentary, igneous and metamorphic
Sedimentary
• Sedimentary rocks are rocks formed by the deposition and
cementation of materials from the earths surface.
• Examples: Breccia, conglomerate, sandstone, shale and
limestone.
• They can be found in deserts, oceans and rivers.
Igneous
• Formed through the cooling and solidification of magma or
lava.
• Examples: granite, pegmatite, diorite, rhyolite and quartz.
• Igneous is found deep beneath the earths surface.
Metamorphic
• A rock that has changed into a different rock from heat or
pressure.
• Examples: anthracite, quartzite, slate, marble and gneiss.
• Can be found deep below the earths surface.