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Journal of the Geological Society of India

, Volume 93, Issue 4, pp 379–391 | Cite as

Timing of Cleavage Development in Relation to Folding and its Implications: An Example from the Deformed Mesoproterozoic Sedimentary Cover of Kaladgi Basin, Southwestern India

  • Mrinal Kanti MukherjeeEmail author
  • Kunal Modak
Research Article
  • 9 Downloads

Abstract

Detailed analysis of cleavage-fold relationships in the Mesoproterozoic cover sediments of Kaladgi basin, south western India, revealed three types of timing relationships between cleavage and folds: (1) cleavage developed earlier than folds. (2) Cleavage developed later at some stage of folding and (3) non-development of cleavages in folds.

In the first case cleavage developed earlier than the folding. Evidences that support such an interpretation include high cleavage-bedding angle throughout the fold, asymmetric fanning of cleavage in the folds with large fan angles and rotation of cleavage more in the steep and short limbs of asymmetric fold. In the second case, cleavage initiated later at some stage during folding which is evident from low cleavage fan angles, relatively low cleavage-bedding angles in the limbs of folds and the offset of bedding trace against cleavage trace due to pressure solution. Even though pressure solution is ubiquitous throughout the fold the effects of offset are more pronounced in the limbs compared to that in the hinge due to changing angular relationship of bedding and cleavage throughout the fold. In the third case, cleavage is absent in the folds resulting in its sporadic occurrences and reflects its diachronous nature.

The final geometry of cleavage in relation to folds at any location is a combined effect of relative timing of cleavage development and mechanism of folding involving layer parallel shortening, flexural slip, tangential longitudinal strain, syn- to post-fold flattening and hinge migration.

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References

  1. Badoux, H. (1970) Les oolites déformées du Vélar (Massif de Morcles). Eclogae Geologicae Helvetiae, v.63, pp.539–548.Google Scholar
  2. Borradaile, G.J. (1979) Strain study of the Caledonides in the Islay region, SW Scotland: Implications for strain histories and deformation mechanisms in greenschists. Jour. Geol. Soc. London, v.136, pp.77–88.CrossRefGoogle Scholar
  3. Cloos, E. (1947) Oolite deformation in the South Mountain fold, Maryland. Geol. Soc. America Bull., v.58, pp.843–918.CrossRefGoogle Scholar
  4. Dieterich, J.H. (1969) Origin of cleavage in folded rocks. Amer. Jour. Sci., v.267, pp.155–165.CrossRefGoogle Scholar
  5. Ghosh, S.K., Deb, S.K. and Sengupta, S. (1996) Hinge migration and hinge replacement. Tectonophysics, v.263, pp.319–337CrossRefGoogle Scholar
  6. Groshong Jr., R. H. (1988) Low temperature deformation mechanisms and their interpretation. Bull. Geol. Soc. Amer., v.100, pp.1329–1360.CrossRefGoogle Scholar
  7. Hobbs, B.E. (1971) The analysis of strain in folded layers: Tectonophysics, v.11, pp.329–375.Google Scholar
  8. Hobbs, B.E., Means, W.D. and Williams, P.F. (1976) An Outline of Structural Geology. John Wiley & Sons. 571p.Google Scholar
  9. Jayaprakash, A.V. (2007) Purana Basins of Karnataka. Mem. Geol. Surv. India, 129, 1–137.Google Scholar
  10. Jayaprakash, A.V., Sundaram, V., Hans, S.K., and Mishra, R.N. (1987) Geology of the Kaladgi-Badami Basin, Karnataka. Mem. Geol. Soc. India, no.6, pp.201–226.Google Scholar
  11. Kale, V.S. and Phansalkar, V.G. (1991) Purana basins of Peninsular India: a review. Basin Res., v.3, pp.1–36.CrossRefGoogle Scholar
  12. Knipe, R.J. (1989) Deformation mechanisms — recognition from natural tectonites. Jour. Struct. Geol., v.11, pp.127–146.CrossRefGoogle Scholar
  13. Kulkarni, K.G. and Borkar, V.D. (1999) Trace fossils from the Kaladgi and Bhima Basis: a review. Abstract volume on Fieldworkshop on Integrated Evaluation of the Kaladgi and Bhima Basins. Geol. Soc. India, pp.37–39.Google Scholar
  14. Mani, M.S. (1974) Ecology and biostratigraphy in India. Dr. W. Junk. The Hague: B.V. Publishers. p.67.Google Scholar
  15. Marshak, S. (1983) Aspects of deformation in carbonate rocks of fold-thrust belts of central Italy and eastern New York State. Unpublished Ph.D Dissertation, Columbia UniversityGoogle Scholar
  16. Mukherjee, M. K. (2015) Basement-cover relations in the intracratonic Kaladgi basin, southwestern India: Deformational evidence of a Mesoproterozoic gravity gliding of the cover over the basement, in Siégel, C., Verdel, C., and Rosenbaum, G. (Eds.), Riding the Wave: GSA Specialist Group in Tectonics and Structural Geology conference, November 2015, Geol. Soc. Australia Abs. no.113, pp.104–105.Google Scholar
  17. Mukherjee, M.K., Das, S. and Modak, K. (2016) Basement-Cover structural relationships in the Kaladgi Basin, southwestern India: Indications towards a Mesoproterozoic gravity gliding of the cover along a detached unconformity. Precambrian Res., v.281, pp.495–520. doi: https://doi.org/10.1016/j.precamres.2016.06.013-0310-9268.CrossRefGoogle Scholar
  18. Mukherjee, M.K., Modak, K., and Das, S. (2015) Deformation scenario and metamorphism of the Mesoproterozoic cover rocks of the Kaladgi basin, southwestern India. Proceedings of the 4th Annual International Conference on Geological & Earth Sciences (GEOS 2015), October 2015, Singapore, Global Science and Technology Forum, pp.50–61. doi: https://doi.org/10.5176/2251-3353_GEOS15.42
  19. Mukherjee, M.K. (2013) Contrasting deformation Geometry, Kinematics and Microstructures between the Basement and the Mesoproterozoic cover rocks of the Kaladgi Basin, South-western India: indications towards deformation of the cover by gravity gliding along a detached unconformity. Proc. Int Conf Deform Mech., Rheol. Tect. (DRT), Leuven, Belgium; p.53.Google Scholar
  20. Onasch, C.M. (1983) Dynamic analysis of rough cleavage in the Martinsburg Formation, Maryland. Jour. Struct. Geol., v.5, pp.73–82CrossRefGoogle Scholar
  21. Ormand, C.J. and Huddleston, P.J. (2003) Strain paths of three small folds from the Appalachian valley and Ridge, Maryland. Jour. Struct. Geol., v.25, pp.1841–1854.CrossRefGoogle Scholar
  22. Padmakumari, V.M., Sambasiva Rao, V.V. and Srinivasan, R. (1998) Model Nd and Rb-Sr ages of shales of the Bagalkot Group, Kaladgi Supergroup, Karnataka. Abs, Nat. Symp. on Late Quaternary Geology and Sea level Changes. Cochin University, Kochi, p.70.Google Scholar
  23. Passchier, C.W. and Trouw, R.A.J. (2005) Microtectonics. Springer, 366p.Google Scholar
  24. Patil, S.P., Pandey, K., Kale, V.S. (2018) Implications of new 40Ar/39Ar age of Mallapur intrusives on the chronology and evolution of the Kaladgi basin, Dharwar craton, India. Jour. Earth Sys. Sci., v. 127, pp.32, doi: https://doi.org/10.1007/s12040-018-0940-5 CrossRefGoogle Scholar
  25. Pillai, P.S. and Kale, V.S. (2011) Seismites in the Lokapur Subgroup of the Proterozoic Kaladgi basin, south India: A testimony to synsedimentary tectonism. Sediment Geol., v.240, pp.1–13.CrossRefGoogle Scholar
  26. Pillai, S. (1997) Study of stromatolitic growth patterns and their implications with reference to the Vindhyanchal and Kaladgi Basins. Unpublished Ph.D Thesis, Pune University. Pune, India.Google Scholar
  27. Powell, C. McA (1973) Timing of Slaty Cleavage During Folding of Precambrian Rocks, Northwest Tasmania. Geol. Soc. Amer. Bull., v.85, pp.1043–1060CrossRefGoogle Scholar
  28. Ramsay, J.G. (1965) Structural investigations in the Barberton Mountain Land, eastern Transvaal. Geol. Soc. South Africa Trans., v.66, pp.353–401.Google Scholar
  29. Ramsay, J.G. (1967) Folding and fracturing of rocks: London, McGraw-Hill Book Co., 562p.Google Scholar
  30. Ramsay, J.G. and Huber, M.I. (1983) The Techniques of Modern Structural Geology. Volume-1, Strain Analysis. Academic Press, 307p.Google Scholar
  31. Ramsay, J.G. and Wood, D.S. (1973) The geometric effects of volume change during deformation processes. Tectonophysics, v.16, pp.263–277.CrossRefGoogle Scholar
  32. Rao, S., Parthasarthy V.V., Padmakumari, V.M. and Srinivasan, R. (1999) Shales of the Proterozoic Bagalkot and Bhima Groups, Southern India — a mineralogical and chemical appraisal. Abstract volume on Fieldworkshop on Integrated Evaluation of the Kaladgi and Bhima Basins. Geol. Soc. India, pp.33–35.Google Scholar
  33. Rutter, E.H. (1976) The kinetics of rock deformation by pressure solution. Phil. Trans. Royal Soc. London, v.A283, pp.203–219.CrossRefGoogle Scholar
  34. Rutter, E.H. (1983) Pressure solution in nature, theory and experiment. Jour. Geol. Soc. London, v. 140, pp.725–740CrossRefGoogle Scholar
  35. Saha, D., Patranabis-Deb, S. and Collins, A.S. (2016) Proterozoic stratigraphy of southern Indian Cratons and Global context. In: Montenari M (Ed.), Stratigraphy and Timescales, 1, pp.1–59. doi: https://doi.org/10.1016/bs.sats.2016.10.003 CrossRefGoogle Scholar
  36. Schwerdtner, W.M. (1973) A scale problem in paleo-strain analysis. Tectonophysics, v.16, pp.47–54.CrossRefGoogle Scholar
  37. Sharma, M. and Pandey, S.K. (2012) Stromatolites of the Kaladgi Basin, Karnataka, India: systematics, biostratigraphy and age implications. Palaeobotanist, v.61, pp.103–121.Google Scholar
  38. Sherwin, J.A. and Chapple, W.M. (1968) Wavelength of single layer folds: a comparison between theory and observation. Amer. Jour. Sci., v.266, pp.67–179.CrossRefGoogle Scholar
  39. Siddans, A.W.B. (1972) Slaty cleavage: a review of research since 1815. Earth Sci. Rev., v.8, pp.205–232.CrossRefGoogle Scholar
  40. Treagus, J.E. and Treagus, S.H. (1981) Folds and strain ellipsoid. Jour. Struct. Geol., v.3, pp.1–17.CrossRefGoogle Scholar
  41. Treagus, S.H. (1983) A theory of finite strain variation through contrasting layers, and its bearing on cleavage refraction. Jour. Struc. Geol., v.5, pp.351–368.CrossRefGoogle Scholar
  42. Tullis, T.E. and Wood, D.S. (1975) Correlation of finite strain from both reduction bodies and preferred orientation of mica in slate from Wales. Geol. Soc. Amer. Bull., v.86, pp.632–638.CrossRefGoogle Scholar
  43. Wensink, H and Klootwijk, C.T. (1970) Palaeomagnetism of the Deccan Traps in the Western Ghats, near Poona (India). Tectonophysics, v.11, pp.175–190.CrossRefGoogle Scholar
  44. Wood, D.S. (1973) Patterns and magnitudes of natural strain in rocks. Phil. Trans. Royal Soc. London, v.A274, pp.73–382.Google Scholar
  45. Wood, D.S. (1974) Current views of the development of slaty cleavage. Ann. Rev. Earth and Planet Sci., v.2, pp.69–401.CrossRefGoogle Scholar

Copyright information

© Geological Society of India 2019

Authors and Affiliations

  1. 1.Department of Applied GeologyIndian Institute of Technology (Indian School of Mines)DhanbadIndia

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