Mahanadi Shear Zone (MSZ) is located in the northern segment of the Eastern Ghats Mobile Belt (EGMB), represented by extensive mylonitization. WNW-trending mylonitic foliation has a moderate-to-steep dip towards NNE. Kinematic indicators such as asymmetric folds, shear bands, quarter structures, suggest dextral ductile shear sense of the dominant strike–slip component and reverse sense of the less prominent dip slip component. Predominance of foliation over lineation indicates flattening strain. Reverse movement and flattening strain confirm shortening. The MSZ is a transpressional zone with simple shear along and pure shear (shortening) perpendicular to the mylonitic fabric. Wide variation in plunge of stretching lineation, presence of back-rotated clasts and 0 < W_k < 1 on two sections oblique to the mylonitic foliation, suggest triclinic symmetry of deformation. This study demonstrates that the width of the MSZ—located in the northern part of the Phulbani Domain—extends beyond 38 km. It covers the entire ‘Tikarpara Domain’ in the north of Phulbani Domain and put the very existence of Tikarpara Domain in question. Lithounits of Phulbani Domain continue to the north across the southern boundary of the MSZ, through Tikarpara Domain and Angul Domain up to the Northern Boundary Shear Zone (NBSZ). It is proposed that the entire area comprising the Phulbani Domain, the MSZ, and the region further north up to the NBSZ, form part of a single domain—Phulbani Domain. MSZ is an outcome of intra-terrane transpression. Thus, this study also questions the credibility of the domainal classification of the EGMB.

Mahanadi剪切区（MSZ）位于东高止山脉活动带（EGMB）的北部，以广泛的mylonitization为代表。WNW趋势的淀粉样变向NNE呈中等到陡峭的下降。运动学指标（例如不对称褶皱，剪切带，四分之一结构）表明，主要的走滑分量的右旋韧性剪切感和不那么突出的倾滑分量的反向感。叶状优势超过线状优势表明应变趋于平坦。反向运动和拉平变形确认缩短。MSZ是一个压变带，沿简单剪切，垂直于（直交）直立的方向延伸。伸展线的下降幅度很大，存在反向旋转的碎屑，且0 <  W _k 斜向于肥厚的叶的两个截面上的<1，表明变形的三斜对称性。这项研究表明，位于Phulbani域北部的MSZ的宽度超过了38 km。它涵盖了Phulbani区域以北的整个“ Tikarpara区域”，并质疑了Tikarpara区域的真实存在。Phulbani域的岩石单元继续穿过MSZ的南部边界向北，通过Tikarpara域和Angul域直到北部边界剪切带（NBSZ）。建议将包括Phulbani域，MSZ以及北至NBSZ的整个区域的整个区域形成单个域Phulbani域的一部分。MSZ是地形内压迫的结果。因此，这项研究也对EGMB领域分类的可信度提出了质疑。