How were Volcanoes in Hawaii Form

Volcanoes are form in earth as the upper surface crust is Moving around .

Bringing the Continental with them overlapping the earth surface, creating a cone shape mountain on earth as it overlap each other.
Some Examples of the Volcanoes Form:

http://higheredbcs.wiley.com/legacy/college/levin/0471697435/chap_tut/images/nw0299-nn.jpg
By the picture you can see that 1 side went down and another side went up.
creating a overlapping and to realease the magma out of the Earth mantle and
it will be called Larva when it comes out

http://www.youtube.com/watch?v=Bf4iJvrAv-M&feature=player_embedded