Geology

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What is Feldspar? Igneous rock

By | 2017-06-25T23:47:28+00:00 June 25th, 2017|Geology|

A feldspar quarry in India Feldspar is a very common igneous rock - more than half of the Earth's crust is made of feldspar. When molecules of aluminum, silica and oxygen get together with potassium, they combine to make the rock feldspar. Feldspar often combines with another rock called quartz to make a [...]

Finding different kinds of rocks

By | 2017-06-25T16:18:40+00:00 June 25th, 2017|Geology|

Queens borough public library, New York City To see the different kinds of rocks for yourself, take a walk around your town. Can you find examples of granite, limestone, slate, and marble on the buildings downtown? Can you find travertine? (this one might be more difficult). Can you figure out why the architects [...]

Where are the Ural Mountains?

By | 2017-06-25T03:27:44+00:00 June 25th, 2017|Central Asia, Geology|

Ural Mountains in Russia The Ural Mountains run from north to south through Central Asia. They separate Europe from Asia. Like the Appalachian Mountains, the Urals formed about 300 million years ago. That was near the end of the Carboniferous period, when the first reptiles were evolving. It was when the tectonic plates [...]

Where are the Rocky Mountains?

By | 2017-06-25T03:21:37+00:00 June 25th, 2017|Geology, North America|

Rocky Mountains The Rocky Mountains stretch all the way from the southern United States north into Canada. They through Utah, Colorado, Wyoming, Montana, and up into Alberta. What we call the Rocky Mountains is really three different mountain chains, one on top of the other. The oldest mountain chain started more than a [...]

Where are the Himalaya Mountains? India

By | 2017-06-25T03:00:25+00:00 June 25th, 2017|China, Geology, India|

Himalaya Mountains About 55 million years ago, plate tectonics made the land that is now India break off from what is now Africa. At this time, the first modern mammals like rats and guinea pigs were evolving, and most of the Earth was covered in forests. For five million years India floated slowly [...]

Which mountains are the highest?

By | 2017-06-25T02:56:15+00:00 June 25th, 2017|Geology|

Up in the Alps in Switzerland Which mountains are the highest in the world? Practice graphing and see how much higher some mountain chains are than others. The highest peaks of each mountain range are below: Appalachian Mountains: 2037 meters above sea level Alps: 4810 meters Rocky Mountains: 4399 meters Himalaya Mountains: 8850 [...]

Where are the Appalachian mountains?

By | 2017-06-25T02:52:48+00:00 June 25th, 2017|Geology, North America|

The Appalachian Mountains About 300 million years ago, near the end of the Carboniferous period, when the first reptiles were evolving, the tectonic plates began to form the supercontinent of Pangaea. When the Euramerica continent smashed into Gondwanaland, that pushed up the land to make the Appalachian mountains. These Appalachian mountains are among [...]

Where are the Andes Mountains? South America

By | 2017-06-25T02:43:16+00:00 June 25th, 2017|Geology, South America|

The Andes mountains run down the Pacific side of South America About 199 million years ago, near the beginning of the Jurassic period, was the time of the dinosaurs. That's when the supercontinent of Pangaea broke up and the pieces began to float away from each other. The supercontinent split up into the [...]

Where are the Alps? Mountains in Europe

By | 2017-06-25T02:43:49+00:00 June 25th, 2017|Geology, Northern Europe|

The Alps The Alps are a long row of mountains dividing southern Europe from northern Europe.  France and Germany are on one side of the Alps, and Italy is on the other side. The Alps formed about 34 to 23 million years ago, in the Tertiary era. The African tectonic plate bumped into [...]