A perceptual region is one created in the mind of the viewer according to associated feelings and ideas.<span> It is a highly subjective way of looking at a geographic region .</span>
Normal fault - a dip-slip fault in which the block above the fault has moved downward relative to the block below. This type of faulting occurs in response to extension and is often observed in the Western United States Basin and Range Province and along oceanic ridge systems.
Normal Fault Animation
thrust fault - a dip-slip fault in which the upper block, above the fault plane, moves up and over the lower block. This type of faulting is common in areas of compression, such as regions where one plate is being subducted under another as in Japan. When the dip angle is shallow, a reverse fault is often described as a thrust fault.
Thrust Fault Animation
Blind Thrust Fault Animation
strike-slip fault - a fault on which the two blocks slide past one another. The San Andreas Fault is an example of a right lateral fault.
Strike-slip Fault Animation
A left-lateral strike-slip fault is one on which the displacement of the far block is to the left when viewed from either side.
A right-lateral strike-slip fault is one on which the displacement of the far block is to the right when viewed from either side.
I think two giant asteroids crashed into each other billions and trillions of years ago and slowly within the billions of years to come, one formed into earth and the other formed into the moon... Well something like that
