Igneous rocks tcm

2,712 views

Published on

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
2,712
On SlideShare
0
From Embeds
0
Number of Embeds
53
Actions
Shares
0
Downloads
10
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • thierry
  • chany
  • thierry
  • chany
  • Chany
  • Thierry
  • Beide
  • Igneous rocks tcm

    1. 1. What are Igneous rocks?• Igneous rocks are rocks that are formed using volcanoes• their name is fire rocks in Latin• The magma under the earth gets ejected out of volcanoes and lands on the cool crust which solidifies to form types of igneous rocks• The larger the crystals are is the way of telling how fast the rock has cooled• Large crystals would mean the rock has formed slowly while tiny or no Crystals would show that the rock has formed faster This is a Link to a video whe got a lot of large cliff information from: made of http://www.youtube.com/watch?v=m granite MJPVdv7D6k formed from volcanoes
    2. 2. Basalt Rock It forms when magma/lava gets out of a volcano to the surface or the ocean ridge and cools.The basalt rock is usually gray or black and very hard Intrusive: Cooled under the surfaceIt cools quickly (very small crystals) Extrusive: Cooled on the surfaceIt is usually extrusive but it can also be intrusiveIt is the most common rock on the earths rockThere is lots of basalt on the ocean floorIt is also found on the moon and mars Return to Some Igneous Rock Page
    3. 3. Obsidian Rock• Obsidian Rocks are made by Nature Glass. The color of the Obsidian Rock is made by the chemical makeup of lava.• Its a extrusive Rock because it forms on the surface.• When a Volcano erupts it spits out a lot of melted rocks.• If the rock is silica and it cools at the right temperature that is 940c- 1080c it can turn into nature glass and then it is a Obsidian Rock.• In the stone age the obsidian rock was a very good tool for knifes, arrowheads, fishhooks etc. In surgery they still use the Obsidian Rock for knifes.Return to SomeIgneous Rock Page
    4. 4. Granite RocksGranite means granum. It is made of many quarts and feldspar bitsstuck together. Granite Rocks are usually pink to gray, white or black.Granite rocks are hard stones because it was made underground andit cools underground. So it is a intrusive rock. Over millions of years allthose granite rocks build together a big crystal. Return to Some Igneous Rock Page
    5. 5. Questions ?

    ×