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.
The tectonic plates ARE made up of the lithosphere (very upper part of the mantle) , the crust (the ground on which we walk) and the oceanic crust (the bottom of the ocean). Bâ¦ut we just say tectonic plates are made up of the crust and lithosphere.