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Analysis of Folding in the Proterozoic Sedimentary Sequence of Bagalkot Group Exposed around Yadwad, N Karnataka, India: a Study Based on Remote Sensing Techniques and Field Investigations

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Abstract

The deformed sedimentary sequence exposed in the core of Precambrian Kaladgi Basin, North Karnataka India, has given rise to prominent regional basinal structures with intervening anticlines. Deformation ceases away from the core part. The basinal structures are recognised on satellite images, aerial photographs and toposheets because of resistant segmented ridges of quartzite. A closure view of Bhuvan images around Yadwad village, North Karnataka, the core portion of Kaladgi Basin also revealed presence of folded geometry in the older carbonates of Bagalkot Group seen along the margins of the regional folds. Though folding in the sequence exposed in the region around Yadwad and further west is described by many authors, no detailed analysis of structures is available in published literature. An attempt is made here to map, analyse and integrate the structures in carbonates of Yadwad region on different scales observed in the field to find out their possible origin. It is suggested that the structures are syntectonic in origin formed in the presence of circulating fluids in high pressure and low temperature during the post depositional phase the Bagalkot sequence in which gravity played an important role in the formation of regional structures. The sequence also has recorded low grade of metamorphism as seen from the thin section observations.

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Acknowledgments

The authors are thankful to Prof V D Karad, President and Executive Director of MAEERs Maharashtra Institute of Technology. They express their gratitude to late Prof Anant V Phadke for teaching finer aspect of structural geology. They thank Prof V V Peshwa, Prof V G Phansalkar for timely guidance and also Dr. Vivek Kale for critical comments.

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  1. Maharashtra Institute of Technology, Pune, 411038, India

    Pradeep B. Jadhav & Lalitkumar K. Kshirsagar

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  1. Pradeep B. Jadhav
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  2. Lalitkumar K. Kshirsagar
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Correspondence to Pradeep B. Jadhav.

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Jadhav, P.B., Kshirsagar, L.K. Analysis of Folding in the Proterozoic Sedimentary Sequence of Bagalkot Group Exposed around Yadwad, N Karnataka, India: a Study Based on Remote Sensing Techniques and Field Investigations. J Indian Soc Remote Sens 45, 247–258 (2017). https://doi.org/10.1007/s12524-016-0583-4

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