What is the difference between oceanic and continental crust?

Answer

Continental crust is part of the Earth’s surface found under land masses, and oceanic crust is the surface found under the ocean floor. Oceanic crust is made of dense rock like basalt. Continental crust has rocks of lesser density like granite.

The Earth has three different layers to it. The crust is the part of the Earth right on top where people live. The crust is subdivided into two types, oceanic and continental. Oceanic crust is found under oceans, and it is about four miles thick in most places. A feature unique to oceanic crust is that there are areas known as mid-ocean ridges where oceanic crust is still being created. Magma shoots up through gaps in the ocean’s floor here. As it cools, it hardens into new rock, which forms brand new segments of oceanic crust. Since oceanic crust is heavier than continental crust, it is constantly sinking and moving under continental crust.

Continental crust varies between six and 47 miles in thickness depending on where it is found. Continental crust tends to be much older than the oceanic kind, and rocks found on this kind of crust are often the oldest in the world. Examples of such rocks are those in Quebec, Canada which are estimated to be about 4 billion years old.

Q&A Related to "What is the difference between oceanic and continental..."
if you mean oceanic crust and continental crust, continental crust are for land and less dense than oceanic crust. Oceanic crust is denser than continental crust and is under the
http://wiki.answers.com/Q/What+is+the+difference+b...
Oceanic crust is rich in minerals made with calcium, magnesium and iron, continental crust is rich in minerals with higher percentages of potassium, sodium, silica, and aluminum.
http://answers.yahoo.com/question/index?qid=201110...
Oceanic crust is the part of Earth's
http://www.chacha.com/question/what-are-two-differ...
The Earth consists of three layers: the crust, the mantle and the core. The core, the innermost layer, is rich in iron and very dense. It can be further subdivided into the inner
http://www.ehow.com/info_8593505_difference-betwee...
Explore this Topic
The earth's crust is between three to five miles deep under the oceans (oceanic crust) and about 25 miles deep under the continents (continental crust). This is ...
The difference between maritime and continental climate is that the temperatures on the continental is higher and dry compared to the temperature in the ocean ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com