I know theknot has a wedding budgeter but to me it seems unrealistic, it budgeted $800 for a photographerâ¦ I wish!
The oceanic crust is made out of basalts - (lava-hardened Iron/Magnesium Silicate mixtures which solidified rapidly).
Oceanic lithosphere consist of oceanic crust which is mostly basaltic (having a composition similar to basalt, a maffic igneous rock) in composition with an average density of 3.0 g/cc. Continental lithosphere consist of continental crust which is granitic (having a composition similar to granite, a felsic igneous rock) in composition and has an average density of 2.7 g/cc. As new sea floor is created at ridge systems plates on either side of the ridge are pushed outward, away from the ridge. Since the Earth is spherical this means that plates must interact with each other at some point beyond the ridges. Plates can interact in three ways.