An Obduction

1 (obsolete) The act of drawing or laying over, as a covering.<p>2 (largely obsolete) An autopsy.</p><p></p><p>3 (geology) The overthrusting of continental crust by oceanic crust or rocks from the mantle, such that the oceanic crust is thrust onto the continental crust, as occurs at a convergent plate boundary when the continental crust is caught in a subduction zone.</p>