**7.3 Stage 3**

Continuous subduction and transgression enhanced deepening and shifted the sediments inward the basin. Sedimentation was developed from the slope apron margin cf. FA1 and FA2 to the outer submarine fans in the basin plain. FA3 is composed of thin/thick-bedded argillaceous muddy sediments intercalated with thin beds of sandstone and deep marine carbonate mud rich in planktonic foraminifera and radiolarian fossils cf. F2, F3, F5, F7, and F11, thus refer to deepening in the Kolosh basin.
