Question

Identify the true statement. a. As the sea floor spreads, the lithosphere rises to fill the space between plates. b. Some magma generated during seafloor spreading erupts from submarine volcanoes. c. New oceanic crust is ultramafic in composition. d. Some magma generated during seafloor spreading spills out to produce a new layer of seafloor called gabbro.

Answer 1

Answer:

d. Some magma generated during seafloor spreading spills out to produce a new layer of seafloor called gabbro.

Explanation:

• The magma is spilled from the mid-oceanic ridges and spreads onto the seafloor creating a newer seafloor.

• This is why it's called as the divergent boundary due to the spreading of magma on both sides of the floor. Grabbo is a coarse-grained mafic intrusive igneous rock and is formed at the oceanic ridges.