Abstract: Studies focusing on the Quaternary, the last period of the Earth’s history (~ 2.6 Ma) is involved withinteraction of biosphere with significant earth processes such as climate changes, tectonic and volcanic activities.These studies are interdisciplinary in nature, which combines questions, techniques and methodologies of archeology,geology, paleoanthropology, geography and paleoseismology. In order to understand the main questions, such as“why”, “where” and “how” in earth processes, we consult physics and chemistry to answer the question “when”. Fundamental sciences provide independent dating techniques to determine the exact timing and also rate ofsignificant events. These techniques continuously develop by means of accuracy, integrity, sensitivity and also fieldof application.One of the basic sources of information of these studies, inorganic sediments, are successfully dated by OpticallyStimulated Luminescence (OSL) and Thermoluminescence (TL) methods for the Late Quaternary time interval (100-200 ka). Recent developments in luminescence technique involves the study of formation of luminescence signal andnature of trap-charge structures in crystal lattice reveal possibility of dating older sediments deposited over millionyears ago.In this study, we investigated the luminescence age of a high fluvial terrace in Kula (Manisa) Volcanic Field which ispreviously dated by constraining its deposition age with the radiometric dates of overlying lava flow (~1200 Ma) byemploying Thermally Assisted (TA) OSL protocol. TA-OSL stimulates deeper traps than the ordinary OSL methodsextending the age limit significantly. The result of TA-OSL age (1066±90 ka) coincides (88±10%) with the mean ofradiometric dates (1200±22 ka), showing a promising success of a developing technique.