Two ophiolite outcrops at Oramar and Karadađ, SE Turkey, of possible Upper Cretaceous age, occupy the same tectonic position on the northern margin of the African-Arabian continental crust as the Troodos, Kizildađ, Baer Bassit, and Oman ophiolites. Field relationships suggest that they were generated in a marginal basin. Southward subduction under the northern extension of the Arabian plate probably resulted in island are volcanism and metamorphism, as well as development of a marginal basin to the S in the Late Cretaceous. Continental convergence caused displacement of the marginal basin ophiolites as well as the northern are-trench complex southward onto the Arabian shelf towards the end of the Cretaceous and Tertiary. Another possibility is that the ophiolites are products of a leaky trans-tensional faults activated by changes in relative plate motions during the Upper Cretaceous.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.