Volume 65, Issue 1, 2021 Journal of Scientific Research Institute of Science, Banaras Hindu University, Varanasi, India. Lithology and Structure of Aravalli Supergroup and Associated Rocks of Southwestern Part of Chittorgarh District, Rajasthan Jamuna Biswa*1, Ritesh Purohit1, K K Sharma2, Harish Kapasya1, and Ganga Biswa1 1Department of Geology, Mohan Lal Sukhadia University, Udaipur, Rajasthan, India.
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[email protected] Abstract: The Aravalli Supergroup constitutes an important component of the Precambrian crust of the NW part of the Indian I. INTRODUCTION Shield. These exhibit well-preserved records of a protracted history The BGC forms the basement for all the younger of development of Precambrian terrain, which spans about 2500 metasedimentary rocks of the Aravalli and Delhi Supergroups myr of the Earth’s history. The south-western parts of the Chittorgarh region represent one of the oldest terrain of Indian (K. Naha & S.Mohanty, 1990). The Aravalli Supergroup peninsula. These are named as Banded Gneissic Complex (BGC) developed during early Proterozoic and constitutes an important and overlying Aravalli Supergroup rocks. The Bhadesar area lies in component of the Precambrian crust in the northwestern part of the south western part of Chittorgarh district, Rajasthan. Regional the Indian Shield. The Aravalli Supergroup unconformably scale mapping on 1:75,000 reveals that the outcrops of the region overlies the Archaean basement and comprises a major part of are elongated and mostly stretched along N-S direction. The rocks the metasedimentary sequences with some metavolcanics in outcrop in a linear belt comprising gneisses and granites of Mewar region of Rajasthan.