Given the cross sections and map views of an ocean-continent convergent plate bo

Question

Given the cross sections and map views of an ocean-continent convergent plate boundary shown here, which maps (A, B, C. or D) that show earthquake distribution most correctly correspond to cross-sections 1 and 2 (the location of the cross section is shown on each map)?

Map B depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map D depicts the earthquake distribution for the plate boundary scenario of cross section 2

Map C depicts the earthquake distribution for the plate boundary scenarios of both cross sections 1 and 2

Map D depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map B depicts the earthquake distribution for the plate boundary scenario of cross section 2

Map C depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map A depicts the earthquake distribution for the plate boundary scenario of cross section 2

Map A depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map C depicts the earthquake distribution for the plate boundary scenario of cross section 2

a)

Map B depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map D depicts the earthquake distribution for the plate boundary scenario of cross section 2

b)

Map C depicts the earthquake distribution for the plate boundary scenarios of both cross sections 1 and 2

c)

Map D depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map B depicts the earthquake distribution for the plate boundary scenario of cross section 2

d)

Map C depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map A depicts the earthquake distribution for the plate boundary scenario of cross section 2

e)

Map A depicts the earthquake distribution for the plate boundary scenario of cross section 1; Map C depicts the earthquake distribution for the plate boundary scenario of cross section 2

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Explanation / Answer

Map D depicts the earthquake distribution for the plate boundary scenario of cross section 1. Here the subduction is gentle and so the zones of deep earthquakes are spread away ftom the boundaries.

Map B depicts the plate distribution for the plate boundary scenario of cross section 2. Here the subduction is steeper as a result of which the regions of shallow, intermediate and deep focus earthquakes are closely placed.

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