## 4 Conclusions  
The comprehensive application of various spectroscopic techniques, including Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDS), alongside absolute dating methodologies such as Thermoluminescence (TL), Optically Stimulated Luminescence (OSL), and Infrared Stimulated Luminescence (IRSL), yielded significant insights into the chronology and technological practices at the archaeological site under study. The data reveal the existence of two distinct stratified groups of inhabitants, each characterized by unique brick production methods that reflect their technological capabilities and environmental adaptations. The first group, dating back approximately 700 to 1000 years ago, showed a more advanced mastery of firing techniques, achieving temperatures exceeding 800 \({}^{\circ}\)C. This is evidenced by the analysis of the Pratima Garh and  
Figure 11: Anomalous fading TL data obtained from kaolinite. The sample was irradiated with 92 Gy, and the TL signal was measured. A test dose equal to 10 Gy was then imparted on the same aliquot and used to normalize the signal in order to consider the sensitization of the sample between the different irradiation and measurement cycles. At this point, the same aliquot was irradiated again with 792 Gy and stored in the dark for a certain time, after which the TL curve and the related test dose were recorded. \begin{table}
\begin{tabular}{l l l l} \hline \hline
**Name of Archaeological Sites** & **Type of Clay Used** & **Calculated Age** & **Estimated Firing Temperature** \\ \hline Mouramora-1 & Non-calcareous & & Below 650 \({}^{\circ}\)C \\ Mouramora-2 & Non-calcareous & XI-XIV sec CE & Below 650 \({}^{\circ}\)C \\ Mouramora-3 & Non-calcareous & & Above \textasci{}800 \({}^{\circ}\)C \\ \hline Pratima Garh & Calcareous & VII-X sec CE (i.e., & Above \textasci{}800 \({}^{\circ}\)C \\ Padum Pukhuri & Non-calcareous & pre-Ahom) & Above \textasci{}800 \({}^{\circ}\)C \\ \hline Rukmini Garh & Non-calcareous & Not datable & Above \textasci{}800 \({}^{\circ}\)C \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Estimated ages, firing temperature, and type of clay used in the studied archaeological sites. Padum Pukhuri samples, which show the high-temperature conditions under which their bricks were produced. This suggests that these earlier inhabitants possessed a sophisticated understanding of kiln construction and thermal control, likely contributing to the durability and quality of their brick materials. In contrast, the second group of inhabitants, who occupied the site between 1100 and 1400 years ago, employed less advanced firing techniques. Analysis of Mouramora samples from this period indicates that their bricks were fired at temperatures below 650 \({}^{\circ}\)C. This difference in firing temperature not only points to a divergence in technological knowledge but may also reflect variations in socio-economic conditions, resource availability, and cultural practices between the two groups. Overall, the integrated use of these advanced analytical methods provided a nuanced understanding of the technological evolution at this archaeological site. The findings underscore the complexity of cultural and technological development over time, highlighting how different communities adapted their techniques to suit their specific environmental and social contexts. This multidisciplinary approach offers a comprehensive framework for interpreting the material culture and technological progress of past societies, shedding light on the dynamic interplay between human innovation and environmental constraints. Conceptualization, R.R.S., C.D.T. and N.A. ; methodology, R.R.S. and C.D.T. ; software, S.K. and C.D.T. ; validation, C.D.T., A.G. and L.P.; formal analysis, C.D.T., A.G. and L.P.; investigation, R.R.S., N.A., C.D.T., S.K., A.G. and L.P.; resources, R.R.S. ; data curation, R.R.S. and C.D.T. ; writing--original draft preparation, C.D.T. and R.R.S.