A certain metamorphic rock is formed from the subduction of an oceanic plate under a continental plate. What facies would you expect that rock to go through

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.

If a volcano’s magma is high in silica, the volcano will probably a. erupt quietly. b. remain dormant. c. erupt explosively. d. produce dark-colored lava.