Marijuana on Federal Lands. Posted: January 27, 2014. With the legalization of marijuana in the State of Colorado, Mesa Verde National Park would like to provide clarification regarding the use of possession of marijuana on Federal lands.
Plate Tectonics. Plate tectonics is the movement of the Earth's crust through convection currents that occur in the mantle. Divergent plate boundaries occur where hot magma rises to the surface, pushing the plates apart. The mid-ocean ridges form at divergent plate boundaries.
Volcanoes form as a result of plate tectonics. When plates are pushing, pulling, and grinding they cause volcanoes. Magma that reaches the surface of the earth produces volcan â¦ oes where plates collide or spread apart.Sources: My science book and my great brain.s it is pushed down it melts and forms magma that rises to the surface and the magma pushes its way through the continental plate and creates volcanoes. The more the oceanic plate is pushed under the continental plate, the greater the potential for more volcanoes and more volcanic activity.