Changes

==The Earth’s Crust==

==The Earth’s Crust==

The Earth’s crust triggers the questions of Earth scientists regarding its formation and evolution through time. Continental and oceanic crust makes up nearly three-fourths of the Earth’s body, providing sources of sediment and basement of basins. Continental crust, chemically, tends to have more felsic mineralogical composition than oceanic one.

The Earth’s crust triggers the questions of Earth scientists regarding its formation and evolution through time. Continental and oceanic crust makes up nearly three-fourths of the Earth’s body, providing sources of sediment and [[basement]] of basins. Continental crust, chemically, tends to have more felsic mineralogical composition than oceanic one.

Divergent plate boundary displays the phenomenon of sea-floor spreading. Mid-Oceanic Ridge (MOR) is the place where magma from below the Earth emerges and crystallizes as oceanic crust. The spreading of the sea-floor causes decompression, triggering partial melting of the source rock. Generation of oceanic crust in MOR enables it to be the youngest crust making up the Earth. No oceanic crust is found to be older than Jurassic.

Divergent plate boundary displays the phenomenon of sea-floor spreading. Mid-Oceanic Ridge (MOR) is the place where magma from below the Earth emerges and crystallizes as oceanic crust. The spreading of the sea-floor causes decompression, triggering partial melting of the source rock. Generation of oceanic crust in MOR enables it to be the youngest crust making up the Earth. No oceanic crust is found to be older than Jurassic.