Geology

Everything you need to know about Geology. Geology. What is geology? Facts about Geology. The basics of Geology. Geology for kids.

Geology

Geology origins from Latin, Geo meaning Earth and logy is the study of. The definition of geology is the study of rocks, minerals and soil. They can be from other planets too! The rocks, minerals and soil can determine how old that area or even give you an estimate of how old that planet is.

       Geologists are scientists who study about geology. There are many types of geologist, though I am only going to tell a few. There are: Economic geologists, engineering geologists, and Petroleum geologists.

Did you know? The rock hammer also called geologist’s hammer and hand lens are two of the most characteristic tools carried by geologists in the field.

 

There are three different ways rock can be created on earth and there are three main classifications of rocks, – igneous, sedimentary, and metamorphic. It is also called the rock cycle.

Igneous

Sedimentary

Metamorphic

Igneous rocks are formed by magma (molten rock) being cooled and becoming solid.

 

Sedimentary rocks are formed because of all the broken down particles of rocks that used to exist are deposited by air, water, wind or water flows that carry the particles. As all the deposited particles build up, the pressure squeezes the sediments into layers of rocks.

 

Metamorphic (the word) is produced from the word metamorphosis which means to change from on from in to another like a caterpillar. It’s first a caterpillar, then comes the stage of metamorphosis where the caterpillar changes into a butterfly. It’s the same thing for these types of rocks. Metamorphic rocks form deep within the Earth, when heat and pressure are applied to either igneous rocks, or sedimentary rocks. The heat and pressure heats the rocks, changing their original structure.

                        

Did you know? Marble is formed when heat and pressure are applied to limestone for many thousands of years.

 

Overall

 

The Mohs scale of Mineral Hardness

Friedrich Mohs (the inventor of the Mohs scale) was born in Germany, studied mathematics and physics at the University of Hale and also studied at the Mining Academy in Saxony. After getting the position of a foreman (a man in charge of other workers) at a mine, he later moved to Austria where he was employed in trying to identify the minerals in a private collection of a banker. As a part of the task, he started to classify minerals. That’s when he made the Mohs scale. The Mohs scale was a hardness scale used to see what mineral is harder and to scratch each of the ten minerals.

From softest (1) to hardest (10)

Mohs Hardness                                      Mineral                               Absolute Hardness

1

Talc

1

2

Gypsum

3

3

Calcite

9

4

Fluorite

21

5

Apatite

48

6

Orthoclase Feldspar

72

7

Quartz

100

8

Topaz

200

9

Corundum

400

10

Diamond

1600

  

 

Did you know: On September 24, 2009, a diamond was discovered in South Africa by Petra Diamonds Ltd., (a miner of the stones in Africa) that is about 500 carats, weighs more than 100 grams and is the size of a chicken egg. It is worth more than 20 million dollars! They hope that it is not worth that little.

 Birth Stones

 

That’s pretty much all the basics about Geology.

3
Liked it
3 Responses to “Geology”
  1. seslisohbet Says...

    On June 25, 2010 at 3:09 am

    Very good site.. thanks webmasters…
    thank you admin …
    sesli sohbet
    sesli sohbet
    sesli sohbet
    sesli sohbet
    sesli chat
    sesli sohbet


  2. Lily Says...

    On June 26, 2010 at 6:00 pm

    this is so cool! tnx for everything…. :)


  3. heatblast12 Says...

    On June 26, 2010 at 8:02 pm

    Thanks for reading it!


Post Comment
comments powered by Disqus