Partial melting of oceanic crust and silica-rich sediments of continental margin
ID: 157648 • Letter: P
Question
Partial melting of oceanic crust and silica-rich sediments of continental margins ____.
is a major cause of earthquakes
will form sedimentary rock
yields magma richer in basalt than the source rock
yields magma richer in silica than the source rock
causes off-gassing which increases global warming
a.is a major cause of earthquakes
b.will form sedimentary rock
c.yields magma richer in basalt than the source rock
d.yields magma richer in silica than the source rock
e.causes off-gassing which increases global warming
Explanation / Answer
option d is thr right answer
because they are roch in sillica. the first layer is of course of basalt but when the melting takes place they are more rich in sillica and thus the magma formed is rich in sillica