Tectonism is the change of position of Earth’s shell that is caused by endogenic power with directions of horizontal and vertical.
According to its moving velocity, tectonism is separated into two parts, as follows:
Epirogenesa is the change of position of Earth’s shell the motion of which is slow in a wide area. Epirogenesa process consists of two kinds, are:
a. Positive Epirogenesa is the phenomenon of falling of land so as if the sea water increases. Example: Sinking of Atlantis terrestrial.
b. Negative Epirogenesa is the phenomenon of rise of terrestrial so as if the sea water decreases. Example: The rise of Scandinavia beach.
2. Orogenesis Motion
Orogenesis motion is an endogenci power motion that is relatively fast and covers relatively short region. It means the formation of mountain (oros=mountain, genesus=birth) and fold happen.
Example: The formation of folding of circum pacific young mountain.