constructive margins

HideShow resource information

constructive margins

1. Divergent convection currents in the mantle cause a frictional drag on the crust above.

2. Basic magma low in silica rises up to the surface.

3. Relatively gentle and frequent eruptions form and ocean ridge in the center of the ocean. 

4. Water floods in and new ocean is born and new land emerges in places.

1 of 1


No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Natural hazards resources »