Process forming of continent

Development theory forming continent

1.This theory is by Alfred Wegener 

on 1912. this theory explain that in the past

time, about 200 million years ago, continent

there are now is land that called pangae.

Pangae is surrounding by ocen Panthalassa.

*) Continent Pangae start divede because there are movement are big in south to west and north to equator . Through this accident is happen explain ocean and continent which float selt and move in a different arrow. Result of piece continent is ocean and continent .

Theory Alfred Wegener popular called Theory ploat continent . From this thory can be proof  truth based factors  :

a.There are similatily shape of line beach of west Europe Continent and African Continent with shapes of line Beach of East American Continent. Except this also there are similar conditions stone in second area.

b.Greenland island in north Canada move be far from Europe Continent with velocity 86cm every years . Then Madagaskar Island move be far from north African with velocity 9cm every years.

2.    Slab Tectonic Theory

           This thory can be stronger with float continent thory. Slab Tectonic Theory declare if earth crust included by some west slab with thick between 50-160km .

The slabs move because there are konveksion current of flow in atmosphere. In some areas, slab of continent move togethere and in others area far away.

In areas where of slabs move in area where the plates move partiaky the formation of the earth. In this area formed vulcanic zone and found earthquekes.