Village Board meetings are held the 1st Monday of the month @ 7:00. (When the 1st Monday is a legal holiday, the meeting date is changed to the following week)
The seven continents and ocean plates basically float across the mantle which is composed of much hotter and denser material. The crust is composed of two basic rock types granite and basalt. The continental crust is composed mostly of granite. The oceanic crust consists of a volcanic lava rock called basalt. Basaltic rocks of the ocean plates are much denser and heavier than the granitic rock of the continental plates. Because of this the continents ride on the denser oceanic plates.
Oceanic crust isusually 5-10 km thick and continental crust is 33 km thick on average. Beneath thecrust is the mantle. The mantle is made up of Si and O, like the crust, but it containsmore Fe and Mg. Thus, Olivine (Fe 2 SiO 4 -Mg 2 SiO 4) and pyroxene (MgSiO 3 -FeSiO 3)are abundant in the mantle. The mantle extends to the core-mantle interface atapproximately 2900 km depth.