Exploring Structural Geology and Their Implications in the Kaptai – Sitapahar Anticline

Abstract

The Kaptai-Sitapahar Anticline is a part of the Chittagong- Tripura Fold Belt (CTFB) and is characterized by a series of parallel hills that are an extensional expression of compressional forces during the Mio-Pliocene. The study focuses on exploring geometrical analysis of bedding attitude data (dip, strike), and the geological structural analysis of the fold, fault, unconformity and joint to correlate with the regional structure. The research identified two sets of major faults in the area, which are mainly thrust and reverse-dextral slip faults. The western and easternmost thrusts are a direct result of the collision between the Indian and Burmese Plates, while the reverse-dextral slip faults along the Chandraghona-Kaptai road cut section probably resulted from the oblique collision between the plates. This tectonic activity is still ongoing and shaping the geomorphology of the region. The research provides valuable information about the geological setting and physiography of the Kaptai- Sitapahar Anticline area, which can help in understanding to correlate with the regional geological structure and its evolution.