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https://hdl.handle.net/2440/109993
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Type: | Journal article |
Title: | Mega sheath fold of the Mahadevi hills, Cauvery Suture Zone, Southern India: implication for accretionary tectonics |
Author: | Chetty, T. Yellappa, T. Mohanty, D. Nagesh, P. Sivappa, V. Santosh, M. Tsunogae, T. |
Citation: | Journal of the Geological Society of India, 2012; 80(6):747-758 |
Publisher: | Springer |
Issue Date: | 2012 |
ISSN: | 0016-7622 0974-6889 |
Statement of Responsibility: | T.R.K. Chetty, T. Yellappa, D.P. Mohanty, P. Nagesh, V.V. Sivappa, M. Santosh and T. Tsunogae |
Abstract: | The Mahadevi hills, located in the axial zone of Cauvery Suture Zone, comprise a sequence of granulite facies rocks represented by garnet-bearing pyroxene granulites and quartzo-feldspathic gneisess interfolded with banded iron formations. Structural mapping with hand held GPS reveals that the Mahadevi hills constitute a mega sheath fold structure exposing well developed easterly plunging extension lineations. Depressional and culmination surfaces are well demarcated in association with elliptical map patterns. The development of the mega sheath fold structure is genetically related to the regional thrust-nappe tectonics, supporting the model of subduction-accretion-collisional history for the evolution of the Cauvery Suture Zone. |
Keywords: | Mega sheath fold; Cauvery Suture Zone; Mahadevi; subduction; accretion; granulites; Tamil Nadu |
Rights: | © Geological Society of India 2012 |
DOI: | 10.1007/s12594-012-0205-x |
Published version: | http://dx.doi.org/10.1007/s12594-012-0205-x |
Appears in Collections: | Aurora harvest 8 Geology & Geophysics publications |
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