Gray = 0-5 My
Light gray = 5-23 my
Green = 23-38 my        Red dots = earthquake epicenters
blue = 38-65 my
purple = 65-135 my
dark purple = 135-190 my

 

Copied from Gross, M.G., 1993, Oceanography (Prentice Hall,446 p.) (as adapted from Judson, Kauffman, and Leet, 1987).

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