Draw a cross section along the line of section (B-B\') shown on the map on the f

Question

Draw a cross section along the line of section (B-B') shown on the map on the following page. Notice that the line extends from the pacific Plate across the East Pacific Rise, Peru-Chile Trench, South America, the Mid-Atlantic Ridge and all the way across the East African Rift.

a) portray how the depths of the following boundaries change along the length of the cross section: i) topography onshore and bathymetry offshore; ii) crust/mantle boundary (MOHO); lithosphere/asthenosphere boundary.

b)put a series of X's within the cross section to represent zones where significant earthquake activity might be expected to occur.

c) put (triangles) on the surface of the cross section to illustrate where you would expect volcanic activity to occur

d) Identify and label the positions of the following features on the cross section: i)plate boundaries and their types; ii) lithospheric plates and their names; III) continental margins and their types (passive or active)

Explanation / Answer

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