this a rather general question. You have to deal first and foremost with the foreland basin between the fore arc and the landward volcanic arc and the sediments on the oceanward part of the fore arc. They run the gamut from continental through fully marine and include also sediments derived from supergene alteration of the magmatic rocks which are (ultra)basic on the seaward side and more felsic on the landward one. All textbooks on sedimentology and basin analysis are packed with articles on this topic.
I find the story of fluid flow in the accretionary wedge to be the most timely and interesting. The veins and unusual ore deposits (and sub-economic mineral deposits) record the movement of warm, mineral rich waters. FUN!
But you are, sitting close to the Makran accretionary wedge. There is plenty of information on the stratigraphy and sedimentary rocks of this currently active subduction zone. I am not sure if any volcanic rocks or ophiolitic lithologis have been described. But one might look carefully into conglomertes and other detrital sediments. Consult Dr Akhtar Kassi. You may also search for Iranian publications on the Makran trench.