Timing of Cleavage Development in Relation to Folding and its Implications: An Example from the Deformed Mesoproterozoic Sedimentary Cover of Kaladgi Basin, Southwestern India
Authors
-
Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad – 826 004
Mrinal Kanti Mukherjee -
Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad – 826 004
Kunal Modak
DOI:
https://doi.org/10.1007/s12594-019-1192-yKeywords:
No keywordsAbstract
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 postfold flattening and hinge migration.
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Badoux, H. 1970) Les oolites de´forme´es du Ve´lar (Massif de Morcles). Eclogae Geologicae Helvetiae, v.63, pp.539–548.
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.
Cloos, E. (1947) Oolite deformation in the South Mountain fold, Maryland. Geol. Soc. America Bull., v.58, pp.843-918.
Dieterich, J.H. (1969) Origin of cleavage in folded rocks. Amer. Jour. Sci., v.267, pp.155-165.
Ghosh, S.K., Deb, S.K. and Sengupta, S. (1996) Hinge migration and hinge replacement. Tectonophysics, v.263, pp.319-337
Groshong Jr., R. H. (1988) Low temperature deformation mechanisms and their interpretation. Bull. Geol. Soc. Amer., v.100, pp.1329–1360.
Hobbs, B.E. (1971) The analysis of strain in folded layers: Tectonophysics, v.11, pp.329-375.
Hobbs, B.E., Means, W.D. and Williams, P.F. (1976) An Outline of Structural Geology. John Wiley & Sons. 571p.
Jayaprakash, A.V. (2007) Purana Basins of Karnataka. Mem. Geol. Surv. India, 129, 1-137.
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.
Kale, V.S. and Phansalkar, V.G. (1991) Purana basins of Peninsular India: a review. Basin Res., v.3, pp.1–36.
Knipe, R.J. (1989) Deformation mechanisms – recognition from natural tectonites. Jour. Struct. Geol., v.11, pp.127–146.
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.
Mani, M.S. (1974) Ecology and biostratigraphy in India. Dr. W. Junk. The Hague: B.V. Publishers. p.67.
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 University
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.
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 detachedunconformity. Precambrian Res., v.281, pp.495-520. doi:10.1016/ j.precamres.2016.06.013-0310-9268.
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:10.5176/22513353_GEOS15.42
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.
Onasch, C.M. (1983) Dynamic analysis of rough cleavage in the Martinsburg Formation, Maryland. Jour. Struct. Geol., v.5, pp.73-82
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.
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.
Passchier, C.W. and Trouw, R.A.J. (2005) Microtectonics. Springer, 366p.
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:10.1007/ s12040-018-0940-5
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.
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.
Powell, C. McA (1973) Timing of Slaty Cleavage During Folding of Precambrian Rocks, Northwest Tasmania. Geol. Soc. Amer. Bull., v.85, pp.1043-1060
Ramsay, J.G. (1965) Structural investigations in the Barberton Mountain Land, eastern Transvaal. Geol. Soc. South Africa Trans., v.66, pp.353-401.
Ramsay, J.G. (1967) Folding and fracturing of rocks: London, McGraw-Hill Book Co., 562p.
Ramsay, J.G. and Huber, M.I. (1983) The Techniques of Modern Structural Geology. Volume-1, Strain Analysis. Academic Press, 307p.
Ramsay, J.G. and Wood, D.S. (1973) The geometric effects of volume change during deformation processes. Tectonophysics, v.16, pp.263-277.
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.
Rutter, E.H. (1976) The kinetics of rock deformation by pressure solution. Phil. Trans. Royal Soc. London, v.A283, pp.203–219.
Rutter, E.H. (1983) Pressure solution in nature, theory and experiment. Jour.Geol. Soc. London, v.140, pp.725–740
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:10.1016/bs.sats.2016.10.003
Schwerdtner, W.M. (1973) A scale problem in paleo-strain analysis. Tectonophysics, v.16, pp.47-54.
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.
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.
Siddans, A.W.B. (1972) Slaty cleavage: a review of research since 1815. Earth Sci. Rev., v.8, pp.205–232.
Treagus, J.E. and Treagus, S.H. (1981) Folds and strain ellipsoid. Jour. Struct.Geol., v.3, pp.1-17.
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.
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.
Wensink, H and Klootwijk, C.T. (1970) Palaeomagnetism of the Deccan Traps in the Western Ghats, near Poona (India). Tectonophysics, v.11, pp.175190.
Wood, D.S. (1973) Patterns and magnitudes of natural strain in rocks.Phil. Trans. Royal Soc. London, v.A274, pp.73–382.
Wood, D.S. (1974) Current views of the development of slaty cleavage. AnnRev. Earth and Planet Sci., v.2, pp.69–401.
