Preliminary study on Tectonic strain pattern of Granites around Palayamkottai of Tirunelveli district, South India

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Preliminary study on Tectonic strain pattern of Granites around Palayamkottai of Tirunelveli district, South India

Author Affiliations

¹ School of Tectonics, Department of Geology, V.O.Chidambaram College, Tuticorin-628008, Tamil Nadu, INDIA

Int. Res. J. Earth Sci., Volume 2, Issue (2), Pages 19-29, March,25 (2014)

Abstract

Fry analysis is used to delineate the tectonic finite starin pattern recorded in the granites of Palayamkottai region of Tirunelveli district. From the oriented samples of 10 locations around Palayamkottai, a complex finite strain pattern of constriction-plane and flattening strains from the granites have been estimated. Subhorizontal and subvertical lineations are recorded from granite exposures in the field. The above features suggest that the granites were emplaced during a transpressive tectonic Achankovil shearing of Pan-African time.

References

Cloos E., Oolite deformation in the South Mountain fold, Maryland, Geol Soc Am Bull, 58, 843 – 918 (1947)
Ramsay J.G., Folding and Fracturing of Rocks, McGraw – Hill, New York, 568 (1967)
Dunnet D., A technique of finite Strain analysis using elliptical particles, Tectonophysics, 7, 117 – 136 (1969)
Fry N., Random point distribution and strain measurement in rocks, Tectonophysics, 60, 89- 105 (1979)
Ramsay J.G. and Huber M.I., The Techniques of Modern Structural Geology, 1, Strain analysis, Academic Press, London (1983)
Manimaran G., Deepak Bagai and Roy Chacko P.T., Chrysoberyl from southern TamilNadu of South India, with implication for Gondwana studies, In: Mineral Exploration, Recent strategies, Eds Rajendran S. et al., NIPA, New Delhi 63-76 (2007)
Manimaran D. and Manimaran G., Tectonic studies around Vallanadu area, Tuticorin district, Tamil Nadu, Outreach, 5, 117 – 122 (2012)
Manimaran G., Roy Chacko P.T., Manimaran D., Selvam S., Antony Ravindran A., Besheliya J. and Sugan M., Shear lineament Analysis of Ambasamudram-Tenkasi Transect of Achankovil-Tambraparni shear zone, South India, IRJ Earth sciences, 1 (3), 1-10 (2013)
Hudleston P.J., Schultz Ela D. and Southwick D.I., Transpression in an Archaean greenstone belt, Northern Minnesota, Can., Jour Earth Sci, 25, 1060-1068 (1988)
Guru Rajesh K. and Chetty T.R.K., Structure and tectonics of the Achankovil Shear Zone, Southern India, Gondwana research, 10, 86- 98 (2006)
Braun I., Pan-African granitic magmatism in the kerala Khondalite belt, Southern India J Asian earth sci, 28, 38-45 (2006)
Bhattacharyya P. and Hudleston P., Strain in ductile shear zones in the Caledonites of Sweden: a three- dimentional puzzle, Jou Struc Geo, 23, 1549-1565 (2001)
Chetty T.R.K. and Bhasker Rao Y.J., Behaviour of stretching lineations in the Salem-Attur shear belt, Southern Granulite Terrain, South India, Jour Geol Soc India 52, 443-448 (1998)
Manimaran G., Petrological and structural studies of the North western part of the Tambraparani shear Zone, South India, Unpubl, Ph.D Thesis Univ of Kerala, Trivandrum, India, 289 (1995)

[ref1] Cloos E., Oolite deformation in the South Mountain fold, Maryland, Geol Soc Am Bull, 58, 843 – 918 (1947)

[ref2] Ramsay J.G., Folding and Fracturing of Rocks, McGraw – Hill, New York, 568 (1967)

[ref3] Dunnet D., A technique of finite Strain analysis using elliptical particles, Tectonophysics, 7, 117 – 136 (1969)

[ref4] Fry N., Random point distribution and strain measurement in rocks, Tectonophysics, 60, 89- 105 (1979)

[ref5] Ramsay J.G. and Huber M.I., The Techniques of Modern Structural Geology, 1, Strain analysis, Academic Press, London (1983)

[ref6] Manimaran G., Deepak Bagai and Roy Chacko P.T., Chrysoberyl from southern TamilNadu of South India, with implication for Gondwana studies, In: Mineral Exploration, Recent strategies, Eds Rajendran S. et al., NIPA, New Delhi 63-76 (2007)

[ref7] Manimaran D. and Manimaran G., Tectonic studies around Vallanadu area, Tuticorin district, Tamil Nadu, Outreach, 5, 117 – 122 (2012)

[ref8] Manimaran G., Roy Chacko P.T., Manimaran D., Selvam S., Antony Ravindran A., Besheliya J. and Sugan M., Shear lineament Analysis of Ambasamudram-Tenkasi Transect of Achankovil-Tambraparni shear zone, South India, IRJ Earth sciences, 1 (3), 1-10 (2013)

[ref9] Hudleston P.J., Schultz Ela D. and Southwick D.I., Transpression in an Archaean greenstone belt, Northern Minnesota, Can., Jour Earth Sci, 25, 1060-1068 (1988)

[ref10] Guru Rajesh K. and Chetty T.R.K., Structure and tectonics of the Achankovil Shear Zone, Southern India, Gondwana research, 10, 86- 98 (2006)

[ref11] Braun I., Pan-African granitic magmatism in the kerala Khondalite belt, Southern India J Asian earth sci, 28, 38-45 (2006)

[ref12] Bhattacharyya P. and Hudleston P., Strain in ductile shear zones in the Caledonites of Sweden: a three- dimentional puzzle, Jou Struc Geo, 23, 1549-1565 (2001)

[ref13] Chetty T.R.K. and Bhasker Rao Y.J., Behaviour of stretching lineations in the Salem-Attur shear belt, Southern Granulite Terrain, South India, Jour Geol Soc India 52, 443-448 (1998)

[ref14] Manimaran G., Petrological and structural studies of the North western part of the Tambraparani shear Zone, South India, Unpubl, Ph.D Thesis Univ of Kerala, Trivandrum, India, 289 (1995)