This study presents a detailed structural and fracture analysis of the western segment of the Katrol Hill Fault (KHF) and its surrounding region within the Kachchh Rift Basin in western India. Through the application of integrated geological and structural mapping, remote sensing, field investigations and paleostress analysis, this study identifies a complex fault system, oriented east-west to ENE-WSW/ESE-WNW. This system is characterized by asymmetric flexures and a network of strike-slip and oblique-slip faults. Multiple fracture types, including extension joints, veins, en-echelon shear fractures and pinnet joints, reflect successive deformation phases under evolving transtensive stress regimes oriented from N-S to NNE-SSW, influenced by magmatic intrusions such as the Nanamo Hill plug and fault activity. Fault-related folds exhibit both normal and reverse drag styles, governed by heterogeneous displacement fields along faults, with conical drag folds and brecciation, indicating mechanical heterogeneity within lithologies. The integration of field data, remote sensing and paleostress reconstruction elucidates the kinematic evolution, fault segmentation and fracture network development in the Kachchh Rift Basin, providing valuable insights into seismic hazard assessment and regional tectonic interpretations.
References
[1]
Kim, Y., Peacock, D.C.P. and Sanderson, D.J. (2004) Fault Damage Zones. JournalofStructuralGeology, 26, 503-517. https://doi.org/10.1016/j.jsg.2003.08.002
[2]
Fialko, Y., Sandwell, D., Agnew, D., Simons, M., Shearer, P. and Minster, B. (2002) Deformation on Nearby Faults Induced by the 1999 Hector Mine Earthquake. Science, 297, 1858-1862. https://doi.org/10.1126/science.1074671
[3]
Hayward, K.S. and Cox, S.F. (2017) Melt Welding and Its Role in Fault Reactivation and Localization of Fracture Damage in Seismically Active Faults. JournalofGeophysicalResearch: SolidEarth, 122, 9689-9713. https://doi.org/10.1002/2017jb014903
[4]
Viola, G., Scheiber, T., Fredin, O., Zwingmann, H., Margreth, A. and Knies, J. (2016) Deconvoluting Complex Structural Histories Archived in Brittle Fault Zones. NatureCommunications, 7, Article No. 13448. https://doi.org/10.1038/ncomms13448
[5]
Peacock, D.C.P., Sanderson, D.J. and Rotevatn, A. (2018) Relationships between Fractures. JournalofStructuralGeology, 106, 41-53. https://doi.org/10.1016/j.jsg.2017.11.010
[6]
Biswas, S.K. (2005) A Review of Structure and Tectonics of Kutch Basin, Western India, with Special Reference to Earthquakes. Special Section: Intraplate Seismicity, 88, 1592-1600.
[7]
Biswas, S.K. (2016) Tectonic Framework, Structure and Tectonic Evolution of Kutch Basin, Western India. Recent Studies on the Geology of Kachchh, Kachchh, 1-24 August 2016, 129-150. https://doi.org/10.17491/cgsi/2016/105417
[8]
Biswas, S.K. (1987) Regional Tectonic Framework, Structure and Evolution of the Western Marginal Basins of India. Tectonophysics, 135, 307-327. https://doi.org/10.1016/0040-1951(87)90115-6
[9]
Thakkar, M.G., Mauryara, D.M., Raj, R. and Chamyal, L.S. (1999) Quaternary Tectonic History and Terrain Evolution of the Area around Bhuj, Mainland Kachchh, Western India. JournalGeologicalSocietyofIndia, 53, 601-610. https://doi.org/10.17491/jgsi/1999/530509
[10]
Thakkar, M.G., Maurya, D.M., Rachna, R. and Chamyal, L.S., (2001) Morphotectonic Analysis of Khari Drainage Basin in Maianland Kachchh: Evidence for Neotectonic Activity along Transverse Faults. In: Gupta, L.N., Kumar, R. and Gill, G.S., Eds., Structures and Tectonics of the Indian Plate, IGA Special Publication, 205-220.
[11]
Maurya, D.M., Thakkar, M.G. and Chamyal, L.S. (2003) Implications of Transverse Fault System on Tectonic Evolution of Mainland Kachchh, Western India. Current Science, 85, 661-667.
[12]
Sohoni, P.S. and Karanth, R.V. (2003) Jointing and Fracturing Characteristics of Central Kachchh Mainland, Kachchh, Western India. JournaloftheGeologicalSocietyofIndia, 61, 673-684. https://doi.org/10.17491/jgsi/2003/610604
[13]
Mallik, J. and Mathew, G. (2006) Structural Attributes of Major Faults in Kachchh, Western India: Seismotectonic Implications. AGU Spring Meeting Abstracts, Goa, 9-24 February 2006, T32A-01.
[14]
Mallik, J., Mathew, G., Angerer, T. and Greiling, R.O. (2008) Determination of Directions of Horizontal Principal Stress and Identification of Active Faults in Kachchh (India) by Electromagnetic Radiation (EMR). JournalofGeodynamics, 45, 234-245. https://doi.org/10.1016/j.jog.2008.01.003
[15]
Kothyari, G.C., Rastogi, B.K., Dumka, R.K. and Chauhan, G., (2015) Secondary Surface Deformation along the Bharudia/North Wagad Fault Zone in Kachchh Rift Basin, Western India. Comunicações Geology, 102, 15-27.
[16]
Bhattacharya, F., Chauhan, G., Durga Prasad, A., Patel, R.C. and Thakkar, M.G. (2019) Strike-Slip Faults in an Intraplate Setting and Their Significance for Landform Evolution in the Kachchh Peninsula, Western India. Geomorphology, 328, 118-137. https://doi.org/10.1016/j.geomorph.2018.12.006
[17]
Mishra, S., Kothyari, G.C., Dubey, R.K. and Chauhan, G. (2021) Structural Attributes and Paleostress Analysis of Quaternary Landforms along the Vigodi Fault (VF) in Western Kachchh Region. QuaternaryInternational, 599, 210-222. https://doi.org/10.1016/j.quaint.2020.07.038
[18]
Shaikh, M., Maurya, D., Soumyajit, M., Vanik, N., Kumar, A. and Chamyal, L. (2020) Tectonic Evolution of the Seismically Active Western Continental Margin of the Indian Plate: Implications for Kinematic History and Fluid Flow. 22nd EGU General Assembly, 4-8 May 2020, Vol. 140, Article 104124.
[19]
Shaikh, M.A., Maurya, D.M., Mukherjee, S., Vanik, N.P., Padmalal, A. and Chamyal, L.S. (2020) Tectonic Evolution of the Intra-Uplift Vigodi-Gugriana-Khirasra-Netra Fault System in the Seismically Active Kachchh Rift Basin, India: Implications for the Western Continental Margin of the Indian Plate. JournalofStructuralGeology, 140, Article ID: 104124. https://doi.org/10.1016/j.jsg.2020.104124
[20]
Jani, C., Kandregula, R.S., Bhosale, S., Chavan, A., Lakhote, A., Bhandari, S., et al. (2021) Delineation of Tectonically Active Zones in the Island Belt Uplift Region, Kachchh Basin, Western India: A Geomorphic and Geodetic Approach. QuaternaryScienceAdvances, 4, Article ID: 100034. https://doi.org/10.1016/j.qsa.2021.100034
[21]
Biswas, S.K. (1993) Geology of Kutch. K. D. Malaviya Institute of Petroleum Exploration, 450 p.
[22]
Kothyari, G.C., Dumka, R.K., Singh, A.P., Chauhan, G., Thakkar, M.G. and Biswas, S.K. (2016) Tectonic Evolution and Stress Pattern of South Wagad Fault at the Kachchh Rift Basin in Western India. GeologicalMagazine, 154, 875-887. https://doi.org/10.1017/s0016756816000509
[23]
Sohoni, P.S., Malik, J.N., Merh, S.S. and Karanth, R.V. (1999) Active Tectonics Astride Katrol Hill Zone, Kachchh, Western India. JournalGeologicalSocietyofIndia, 53, 579-586. https://doi.org/10.17491/jgsi/1999/530506
[24]
Maurya, D.M., Chowksey, V., Tiwari, P. and Chamyal, L.S. (2017) Tectonic Geomorphology and Neotectonic Setting of the Seismically Active South Wagad Fault (SWF), Western India, Using Field and GPR Data. ActaGeophysica, 65, 1167-1184. https://doi.org/10.1007/s11600-017-0099-5
[25]
Patidar, A.K., Maurya, D.M., Thakkar, M.G. and Chamyal, L.S. (2007) Fluvial Geomorphology and Neotectonic Activity Based on Field and GPR Data, Katrol Hill Range, Kachchh, Western India. QuaternaryInternational, 159, 74-92. https://doi.org/10.1016/j.quaint.2006.08.013
[26]
Patidar, A.K., Maurya, D.M., Thakkar, M.G. and Chamyal, L.S. (2008) Evidence of Neotectonic Reactivation of the Katrol Hill Fault during Late Quaternary and Its GPR Characterization. Current Science, 94, 338-346. http://www.jstor.org/stable/24100341
[27]
Bhattacharya, F., Rastogi, B.K., Ngangom, M., Thakkar, M.G. and Patel, R.C. (2013) Late Quaternary Climate and Seismicity in the Katrol Hill Range, Kachchh, Western India. JournalofAsianEarthSciences, 73, 114-120. https://doi.org/10.1016/j.jseaes.2013.04.030
[28]
Das, A., Chauhan, G., Prizomwala, S.P., Thakkar, M.G. and Rastogi, B.K. (2016) Tectonic Variability along the South Katrol Hill Fault, Kachchh, Western India: Insights from Geomorphic Indices. ZeitschriftfürGeomorphologie, 60, 209-218. https://doi.org/10.1127/zfg/2016/0201
[29]
Das, A., Prizomwala, S.P., Solanki, T., Chauhan, G., Thakkar, M.G. and Bhatt, N. (2019) Relative Assessment of Tectonic Activity along the Seismically Active Katrol Hill Fault, Kachchh, Western India. JournaloftheGeologicalSocietyofIndia, 94, 179-187. https://doi.org/10.1007/s12594-019-1287-5
[30]
Talati, R.N. (2018) Occurrence of Fibrous Calcite in Miliolite Limestone of the Katrol Hill Range, Kachchh, Western India: New Evidence of Tectonic Activity along the KHF. InternationalJournalofEmergingTrendsinScienceandTechnology, 5, 6732-6736. https://doi.org/10.18535/ijetst/v5i9.02
[31]
Tiwari, P., Maurya, D.M., Shaikh, M., Patidar, A.K., Vanik, N., Padmalal, A., et al. (2021) Surface Trace of the Active Katrol Hill Fault and Estimation of Paleo-Earthquake Magnitude for Seismic Hazard, Western India. EngineeringGeology, 295, Article ID: 106416. https://doi.org/10.1016/j.enggeo.2021.106416
[32]
Biswas, S.K. (2016) Mesozoic and Tertiary Stratigraphy of Kutch* (Kachchh)? A Review. In: Thakkar, M.G., Ed., Recent Studies on the Geology of Kachchh, Geological Society of India, Special Publication 6, 1-24. https://doi.org/10.17491/cgsi/2016/105405
[33]
Biswas, S.K. and Deshpande, S.V. (1970) Geological and Tectonic Maps of Kutch. ONGC Bulletin, Vol. 7, 115-116.
[34]
Lageson, D.R., Larsen, M.C., Lynn, H.B. and Treadway, W.A. (2012) Applications of Google Earth Pro to Fracture and Fault Studies of Laramide Anticlines in the Rocky Mountain Foreland. In: Whitmeyer, S.J., Bailey, J.E., De Paor, D.G. and Ornduff, T., Eds., GoogleEarthandVirtualVisualizationsinGeoscienceEducationandResearch, Geological Society of America, 209-220. https://doi.org/10.1130/2012.2492(15)
[35]
Delvaux, D. and Sperner, B. (2003) New Aspects of Tectonic Stress Inversion with Reference to the TENSOR Program. GeologicalSociety, London, SpecialPublications, 212, 75-100. https://doi.org/10.1144/gsl.sp.2003.212.01.06
[36]
Angelier, J. (1994) Fault Slip Analysis and Paleostress Reconstruction. In: Hancock, P.L., Ed, Continental Deformation, Pergamon Press, 53-101.
[37]
Delvaux, D., Moeys, R., Stapel, G., Petit, C., Levi, K., Miroshnichenko, A., et al. (1997) Paleostress Reconstructions and Geodynamics of the Baikal Region, Central Asia, Part 2. Cenozoic Rifting. Tectonophysics, 282, 1-38. https://doi.org/10.1016/s0040-1951(97)00210-2
Peacock, D.C.P. (2001) The Temporal Relationship between Joints and Faults. JournalofStructuralGeology, 23, 329-341. https://doi.org/10.1016/s0191-8141(00)00099-7
[40]
Grasemann, B., Martel, S. and Passchier, C. (2005) Reverse and Normal Drag along a Fault. JournalofStructuralGeology, 27, 999-1010. https://doi.org/10.1016/j.jsg.2005.04.006
[41]
Reches, Z. and Eidelman, A. (1995) Drag along faults. Tectonophysics, 247, 145-156. https://doi.org/10.1016/0040-1951(94)00170-e
[42]
Becker, A. (1995) Conical Drag Folds as Kinematic Indicators for Strike-Slip Fault Motion. JournalofStructuralGeology, 17, 1497-1506. https://doi.org/10.1016/0191-8141(95)00057-k
