Facts about Tectonic Plates talk about a theory of science, which defines the movement of earth’s plates. The process of tectonic movement on our planet was traced back around 3 to 3.5 billion years ago. During the first 10 years of 20th century, the scientists began to develop an idea about the continental drift concept. In the end of 1950s and beginning of 1960s, the validation about the plate-tectonic theory took place. Find other useful facts about tectonic plates below:
Facts about Tectonic Plates 1: lithosphere
Earth has lithosphere at the outermost shell. The upper mantle and crust are found on the lithosphere. It consists of some tectonic plates.
Facts about Tectonic Plates 2: the number of plates on lithosphere
Do you know the number of tectonic plates that lithosphere has? Actually, the definition of lithosphere affects the number of tectonic plates. The common theories believe that lithosphere has seven to eight major tectonic plates. It has numerous minor tectonic plates.
Facts about Tectonic Plates 3: the relative movement
The range of the relative movement for the plate tectonics is measured from zero to 100 mm per year.
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Facts about Tectonic Plates 4: the type of boundary
The type of boundary is determined according to the relative motions of the two meeting tectonic plates. It comes in three types. They are transforming, divergent, and convergent.
Facts about Tectonic Plates 5: the faults
The fault is a term to call the boundary where the plate tectonics meet. The oceanic trench, mountain, volcanic activity, and earthquakes usually occur on the faults.
Facts about Tectonic Plates 6: the outer layers of our planets
Lithosphere and asthenosphere are located at the outer layers of earth. The method for heating transfer and mechanical properties determines the division.
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Facts about Tectonic Plates 7: the characteristics of lithosphere and asthenosphere
Asthenosphere has easy flow. Moreover, it is hot. On the other hand, lithosphere is defined as the rigid and cool layer. The convection makes asthenosphere transfer the heat. Conduction is the process, which makes lithosphere, lose the heat.
Facts about Tectonic Plates 8: motion range
The Mid-Atlantic Ridge has the plate motion at 10 to 400 mm per year. On other hand, Nazca Plate has the growth at 160 mm per year. You can compare the latter with the growth of the hair, while the former is with the growth of a fingernail.
Facts about Tectonic Plates 9: the thickness of lithosphere
The thickness of oceanic lithosphere is 62 miles or 100 kilometers. The thickness of continental lithosphere is measured at 200 kilometers. The thickness is varied on the mountain ranges and basins.
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Facts about Tectonic Plates 10: Plate boundaries
Some topographic features are linked with the presence of plate boundaries. They include oceanic trenches, mid ocean ridges, volcanoes, and mountains. Earthquake is one of the common geological events associated with plate boundaries.
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