Abstract

During the formation of the Upper Cretaceous Oman ophiolite by sea-floor spreading, faulting parallel to the spreading axis produced a 250-m escarpment. This escarpment now forms the western margin of a 5-km-wide north-south-oriented valley in northern Oman floored by pillow lavas, flow breccias, laminated mudstones, and mass-flow, ophiolite-derived sediments; sulfide mineralization is concentrated along the fault zone. The features described are closely comparable with those reported in the FAMOUS area and those in a paleo-transform fault zone in the Troodos massif, Cyprus, and are significant in delineating mineralized zones in ophiolites.

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