More than 10 km below sea level 7-8 km below sea level O -4-5 km below sea level

Question

More than 10 km below sea level 7-8 km below sea level O -4-5 km below sea level Less than 3 km below sea level QUESTION 13 1 points What is the distance between the trench and the active volcanic arc? a. About 30 km Ob. About 100 km OC. About 300 km Od. About 1000 km QUESTION 14 10 points Saved In light of all of your observations in Part 2, including the plate boundary geometry and velocities, describe the tectonic process happening below the western edge of South America and its link to seismicity and volcanism in the region T TT Arial 3 (12pt) Oceanic tectonic plate, subducting, convergent boundary

Explanation / Answer

Answer 12) More than 10km below sea level

Explanation- Trench is the deepest part of the oceanic crust . The Mariana trench in Pacific is the deepest

Answer 13) About 300km

Explanation- the arc volcanic arc and trench gap is about 300km in subduction zone.

Answer 14) the Nazca plate named after Nazca region of Southern Peru is an Oceanic tectonic plates in the Eastern Pacific plate off the Western Coast of South America. As a result the Eastward moving more dense Nazca plate is subducting under the Western edge of South America, This subduction is along the Peru -Chile trench under the South American plate.

This is hence a subduction zone and hence deep focus earthquake occurs along the western edge of South American plate.Thus it is seismically active zone.

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