1 / 3

What is a Igneous Rock?

By Madison Wacaser #26. What is a Igneous Rock?.

akio
Download Presentation

What is a Igneous Rock?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. By Madison Wacaser #26 What is a Igneous Rock? Igneous rocks are formed by lava. The magma comes from the inside the earth. The definition of igneous rocks it rock formed by the solidification of magma. When the magma starts pushing up it erupts out of volcanoes. When it cools, depending on how the magma cools and how long it takes to cool it will form different rocks such as obsidian, granite, basalt, pumice, pegmatite, rhyolite, diorite, tuff, andesite, scoria, peridotite, and gabbro. There are two kinds of igneous rock extrusive and intrusive. Extrusive rocks form quickly since it erupts out of a volcano, lands on earth’s crust and have fine grains in them. Intrusive rock forms slowly since it doesn’t reach earth’s surface it has course grains. Examples Obsidian is sea-glass like and is usually black.It forms from extrusive rock and forms intrusive igneous rock. 3 1 Scoria usually has holes and always is dark colors. It’s extrusive igneous rock. 2 Granite is intrusive igneous rock. Made of marble,basalt, and feldspar.

  2. By Madison Wacaser #26 How is a Igneous Rock Formed? When it cools, depending on how the magma cools and how long it takes to cool it will form different rocks such as obsidian, granite, basalt, pumice, pegmatite, rhyolite, diorite, tuff, Andesite, scoria, peridotite, and gabbro. Diorite is intrusive igneous rock and contains a mixture of feldspar, pyroxene, hornblende and sometimes quartz. Andesite is extrusive igneous rock it is made out of minerals such as hornblende, pyroxene and biotite. 4 Diorite 7. Andesite How is it Used? You can use basalt for sidewalks, asphalt pavement, and road base. You can also use granite for countertops in houses. 5 6

  3. By Madison Wacaser #26 Citation Page Picture Citations 1. http://www.galleries.com/rocks/igneous.jpg 2. http://geology.com/rocks/pictures/granite-coarse-grained.jpg 3. http://geology.com/rocks/pictures/granite-coarse-grained.jpg 4. http://geology.com/rocks/pictures/granite-coarse-grained.jpg 5. http://www.terragalleria.com/images/us-nw/usor37770.small.jpeg 6. http://images04.olx.com/ui/1/60/85/8995585_1.jpg 7. http://geology.com/rocks/pictures/granite-coarse-grained.jpg Bibliography Morris, Neil. Rocks and Minerals. New York, NY: Crabtree Publishing Company, 1998. webligraphy http://www.kidsgeo.com/images/igneous-rocks.jpg http://geology.com/rocks/pictures/granite-coarse-grained.jpg

More Related