Ophiolites are generated in several tectonic environments characterized by distinct sets of chemical signatures. These chemical signatures, presented as tectonic discrimination diagrams, are used in assigning rocks of unknown origin to a particular tectonic setting. Available information make it possible to class ophiolites into two types based on their inherent chemistry: Mid-Ocean Ridge (MOR) and Supra-Subduction Zone (SSZ) ophiolites. MOR ophiolites were formed in mid-ocean ridge spreading centers while SSZ ophiolites were
generated in environments having a subduction component. Petrogenetic modeling shows that the source regions of.S1SZ ophiolites, with the involvement of water, have undergone higher degrees and more stages of partial melting compared to the source regions of MOR ophiolites. Marginal basins are recognized to be the best environment where ophiolites can be generated. Present-day restricted ocean basins are possible ophiolites of the future given the proper spatial, temporal and tectonic relationships.