Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Rock Types
Metamorphic

Igneous
Sedimentary
• What are Igneous Rocks?
Igneous rocks are formed from the solidification of
molten rock material.
• There are two basic ...
• Igneous rocks are called fire rocks and are
formed either underground or above
ground. Underground, they are formed
when...
Basalt Lava - Basalt is a
hard, black volcanic rock.
Less than ½ of the weight of
basalt is silica (SiO2

Dacite lava
is m...
• What are Sedimentary Rocks?
Sedimentary rocks are formed by the accumulation
of sediments.
• There are three basic types...
• For thousands, even millions of years,
little pieces of our earth have been
eroded--broken down and worn away
by wind an...
Conglomerate is made up of
rounded pebbles cemented
together

Breccia is made up of angular
pebbles cemented together.

to...
• What are Metamorphic Rocks?
Metamorphic rocks have been modified by
heat, pressure and chemical process usually
while bu...
• Metamorphic rocks are rocks that
have "morphed" into another kind
of rock. These rocks were once
igneous or sedimentary ...
Quartzite is a coarse-grained
metamorphic rock derived from
sandstone.

Marble is a metamorphic rock that
comes from metam...
Upcoming SlideShare
Loading in …5
×

rocks types

987 views

Published on

Published in: Technology, Business
  • Be the first to comment

rocks types

  1. 1. Rock Types Metamorphic Igneous Sedimentary
  2. 2. • What are Igneous Rocks? Igneous rocks are formed from the solidification of molten rock material. • There are two basic types: 1) intrusive igneous rocks 2) extrusive igneous rocks topics
  3. 3. • Igneous rocks are called fire rocks and are formed either underground or above ground. Underground, they are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets. As these pockets of magma cool slowly underground, the magma becomes igneous rocks. • Igneous rocks are also formed when volcanoes 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 the lava cools above ground. topics
  4. 4. Basalt Lava - Basalt is a hard, black volcanic rock. Less than ½ of the weight of basalt is silica (SiO2 Dacite lava is most often light gray, but can be dark gray to black. topics
  5. 5. • What are Sedimentary Rocks? Sedimentary rocks are formed by the accumulation of sediments. • There are three basic types of sedimentary rocks: 1) classic sedimentary rocks 2) chemical sedimentary rocks 3) organic sedimentary rocks topics
  6. 6. • For thousands, even millions of years, little pieces of our earth have been eroded--broken down and worn away by wind and water. These little bits of our earth are washed downstream where they settle to the bottom of the rivers, lakes, and oceans. Layer after layer of eroded earth is deposited on top of each. These layers are pressed down more and more through time, until the bottom layers slowly turn into rock. topics
  7. 7. Conglomerate is made up of rounded pebbles cemented together Breccia is made up of angular pebbles cemented together. topics
  8. 8. • What are Metamorphic Rocks? Metamorphic rocks have been modified by heat, pressure and chemical process usually while buried deep below Earth's surface. • There are two basic types of metamorphic rocks: • 1) foliated metamorphic rocks • 2) non-foliated metamorphic rocks topics
  9. 9. • Metamorphic rocks are rocks that have "morphed" into another kind of rock. These rocks were once igneous or sedimentary rocks. How do sedimentary and igneous rocks change? The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. If you exam metamorphic rock samples closely, you'll discover how flattened some of the grains in the rock are. topics
  10. 10. Quartzite is a coarse-grained metamorphic rock derived from sandstone. Marble is a metamorphic rock that comes from metamorphosed limestone or dolomite. topics

×