Abstract: The Neogene clastic sediments occurring to south of Salihli are divided in  two unitswhich are seperated by an unconformity. The sequence, m ascending order, covers lower and upperclastic units. The total thickness of the Neogene clastic sediments is about 1500 meters. The Menderes metamorphlc rokcs are spreading in the north and south of Gediz depression as the basement rockin the region.The clastic sediments are made of alternating coarsening-upward cyolotems. The eyclotems varyfrom 5 to 75 m in thickness showing a relatively uniform grain composition and fabric features. Laterally, the thickness of eyclotems change over short distances, from south to north.The sedimentary and stratigraphie features of the lower and upper clastic units reflect a fast development of pervasive sedimentation in the alluvial fan environment, Field measurements of internal sedimentary structures of all units indicate that the dominant transport direction is from south to north.The different sedimentary fadeses at the southern and northern parts of Gediz depression suggestproggression of an asimetric basin at first stage, The asimetric characteristics of tectonlsm and subsidence during the Neogene sedimentation have resulted in the shifting of subsidence axis to the activesouthern margin. In addition to seasonal conditions, migration of basinal axis to the southern basementis the mam factor that causes formation of the coarsening-upward sequence. The clastic sedimentdeposition and facias distribution of Gediz depression are controlled by listric type growth faults, inthe south of depression field, which dominantly east-west trending. Probably, very subsidence phaseresults in the coarsening-upward cyclotem and is controlled by the growth faults,