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How is it possible that the continents will come back together even the tectonic plates are together? I have heard of divergent boundaries in the ocean and on land, and subduction, and even how mountains are formed, so how does it work?
Question Date: 2013-11-25
Answer 1:

There are on Earth about 12 or so of these plates. The continents ride on these plates, hence the continents change latitude and longitude because they are carried by the spherical caps or plates.

There are three types of plate boundaries: type one is where two plates are diverging. This means that stuff from BELOW the plates rushes up to fill the opening. This occurs along ocean ridges. There are about 7, 0000 km (linear), or 43,496 miles of diverging plate boundary.

Then type 2 plate boundaries: converging plates. When this happens one plate dives beneath the other. If the plate diving beneath the other has a continent on it, then the continent will make the process stop when the continent is moved to the region where subduction is taking place.

Finally type 3 plate boundaries: two plates slide past each other such as along the San Andreas Fault where we live.

Because the motion of the plates is irregular, it is indeed possible for two plates each of which has a continent piggy backing on to collide. When these two plates undergo subduction, then the two continental blocks will be slammed into each other and a high mountain range will form. This is happening TODAY to produce the Himalaya Mountains, because INDIA used to be attached to AFRICA, and in the past 70 million years it has moved north and is now slamming into ASIA/CHINA.

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