Partial melting of oceanic crust and silica-rich sediments of continental margin
ID: 157598 • Letter: P
Question
Partial melting of oceanic crust and silica-rich sediments of continental margins ____.
is a major cause of earthquakes
yields magma richer in basalt than the source rock
yields magma richer in silica than the source rock
will form sedimentary rock
causes off-gassing which increases global warming
a.is a major cause of earthquakes
b.yields magma richer in basalt than the source rock
c.yields magma richer in silica than the source rock
d.will form sedimentary rock
e.causes off-gassing which increases global warming
Explanation / Answer
option b
this partial melting of oceanic crust and sill=ica rich sediments is the main cause of flood basalts taht has been seen in eruption of valcanos these days
these are also called overlapping lava flows