The western Durkan Complex (Makran Accretionary Prism, SE Iran): A Late Cretaceous tectonically disrupted seamounts chain and its role in controlling deformation style

The Durkan Complex is a key tectonic element of the Makran accretionary prism (SE Iran) and it has been interpreted as representing continental margin succession. We present here multidisciplinary study western Complex, which based on new geological, stratigraphic, biostratigraphic data, well geochemical data volcanic meta-volcanic rocks forming this complex. Our show that complex consists distinct slices showing both non-metamorphic very low-grade metamorphic deformed successions. Stratigraphic allow us to recognize three types Type-I composed by Coniacian – early Campanian pelagic succession with intercalation pillow lavas minor volcaniclastic rocks. Type-II includes sequence passing volcano-sedimentary Cenomanian limestones, followed hemipelagic sequence. This characterized abundant mass-transport deposits. Type-III sequences, are stratigraphically covered platform latter locally in different successions alkaline affinity, suggesting an origin from oceanic within-plate setting. results indicate represents fragments seamounts tectonically incorporated wedge during latest Late Cretaceous–Paleocene. propose incorporation frontal caused shortening whole convergent possibly contributed controlling deformation style Accretionary Wedge Cretaceous–Paleocene times.