10 Interesting the Crust Facts
The outermost solid shell of natural satellite or a planet is explained on the Crust facts. If you check the geology, the crust and the underlying mantel have different chemicals. The igneous processes are responsible for producing the crust of Mercury, Moon, Earth, lo, Mars and Venus. The incompatible elements in the crusts are richer if you compare them with the underlying mantels. Let’s find other interesting facts about the crust below:
The Crust Facts 1: the composition of the earth’s crust
Can you mention some components on the earth’s crust? It consists of the sedimentary, metamorphic and igneous rocks.
The Crust Facts 2: the location of the crust
Do you know that the mantle underlay the crust? Peridotite mainly composes the upper part of the mantle.
The Crust Facts 3: the boundary of the mantle and crust
The Mohorovicic discontinuity is considered as the most common boundary between the mantle and the crust. The seismic velocity contrast will define the boundary of the mantle and crust.
The Crust Facts 4: the volume of the crust
The crust only accounts less than 1 percent from the volume of earth. There are two types of crust on earth. Both are the continental crust and oceanic crust.
The Crust Facts 5: the continental crust
The thickness of the continental crust is 20 miles or 30 km to 30 miles or 50 km. Compared to the oceanic crust, the continental one features the less dense rocks. It is very common to spot granite in the continental crust.
The Crust Facts 6: the oceanic crust
The thickness of the oceanic crust is 3 miles or 5 km to 6 miles or 10 km. the gabbro, diabase and basalt as the main components in oceanic crust.
The Crust Facts 7: floating
The location of the oceanic and continent crust is different. The oceanic crust is less thick than the continental crust. Therefore, the latter one can be seen at the greater depth and greater elevation than the former one. Find facts about soil here.
The Crust Facts 8: the temperature
The depth affects the temperature of the crust. The average temperature of the crust at the boundary is around 392 degrees F to 752 degrees F.
The Crust Facts 9: the oldest continental crust
The age of the oldest continent crust is around 3.7 to 4.28 billion years. It can be found in Fennoscandian Shield, in the Acasta Gneiss in Canadian Shield and Narryer Gneiss Terrane in Western Australia. Get facts about structure of earth here.
The Crust Facts 10: the current age of the continental crust
The current age of the continental crust of earth is around 2.0 billion years. That’s the estimation created by the experts.
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