1 janv. 1960 - how sea floor is created
Description:
Harry H Hess thought that the seafloor was created at or near ocean ridges. the floor would spread in both directions and heat from the mantle once it cooled would create new crust.Ajouté au bande de temps:
Date:
1 janv. 1960
Maintenaint
~ Il y a 64 ans
