Team+1+IGNEOUS

Igneous rocks form underground or above ground.Underground they are formed when the mmelted rock called magma deep within the earth gets trapped in small pockets.As they pockets of magma cools slowly underground, the magma becomes igneous rocks. Igneous rocks are formed when valcanoes erupt, causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as lava cools above ground. Basalts are dark colored, fine grained extrusive rock. The mineral grains are so fine that they are impossible to distinguish with the naked eye or even a magnifine glass.They are the most widespread of all igneous rocks.Most baslat are volcanic in orgin and were formed by the rapid cooling and the hardening of the lava flow.Some basalt are in intrusive have cooled interior. Granite is an igneous rock is composed to four minerals.These minerals are courts feldspar mica and usually hornblende. Granite forms as magma cools far under the earths surface.Because it hardens deep underground.It cools very slowly this alows cyristals of the for minerals minerals to grow large enought to be easily seen by the naked eye.Granite is an exellent material for building bridges and buildings because it can withstand thousands of pounds of preasure.It is also used for monuments because it weathers slowly.Ingravings in the granite can be red for hundreds of years, making the rock more valuable. granite is quarried in my places in the world including the united states. the startes of new hampsure has a nickname "granite state"because of the amount of granite in the mountains of that beautiful state. the canadians shield of the north america contains huge outcropping of the granite. balsalt are volcanic in origin and were formed by the rapid cooling and harding of the lava flows.Dacite is an extrusive igneous rock.The princaple minerals that make up the dacite are plagioclase,quartz,prroxene, or hornblende.

Ignoes rocks are rocks formed by solidafaction of cooled magama(molten rock) with or without crystalization,either below the surface as instrusive rocks or on the surface as extrusive rocks.this magma can be derived from partial melts of pre-existing rocks in either the earths mantle or crust.typically,the melting is caused by 1 or more of the following process.An increase in tempeture and a decrease in preassure,or change in composition.Over 700 types of ignoes rocks have been decribed, most of them formed beneath the surface of the earths crust.These have diverse propeties,depending on their composition and how they are formed. by: Taylor, Nikola, Dria and Noel.

**
 * amorphic #1 ’s Rebuttal:


 * Team Metamorphic #2 ’s Rebuttal:

**** Team # ’s Rebuttal: **