This document presents information on image research, a unified visual system, and image objectives and recommended programs. It draws together, under a single cover, research results previously fragmented through other literature and unpublished files.

Consisting of papers that have appeared recently in International Geology Review, Middle American Terranes, Potential Correlatives, and Orogenic Processes focuses on Middle American terranes in which tectonic processes, including flat-slab subduction, for orogenic development are examined at various times since the late Mesoproterozoi