\psset{Radius=5,RotX=0,Decran=100,Dobs=100}
\begin{pspicture}(-5,-5)(5,5)
\psset{PHI=0,THETA=100}
\WorldMapThreeD[gridmapcolor=yellow,circles=false,ridge=true]%
\psframe(4,-6.4)(9,-3.6)
\uput[r](4,-4){Tectonic plates boundaries}
\psline[linecolor=red,linewidth=2pt](4.2,-4.5)(5,-4.5)
    \uput[r](5,-4.5){\color{red}{Ridge}}
\psline[linecolor=darkgreen,linewidth=2pt](4.2,-5.25)(5,-5.25)
    \uput[r](5,-5.25){\color{darkgreen}{Trench}}
\psline[linecolor=orange,linewidth=2pt](4.2,-6)(5,-6)
    \uput[r](5,-6){\color{orange}{Transform}}
\end{pspicture}