Mega sheath fold of the Mahadevi hills, Cauvery Suture Zone, southern India: Implication for accretionary tectonics

被引：0

作者：

T. R. K. Chetty

T. Yellappa

D. P. Mohanty

P. Nagesh

V. V. Sivappa

M. Santosh

T. Tsunogae

机构：

[1] National Geophysical Research Institute (CSIR),

[2] Kochi University,undefined

[3] Tsukuba University,undefined

来源：

Journal of the Geological Society of India | 2012年 / 80卷

关键词：

Mega Sheath fold; Cauvery Suture Zone; Mahadevi; Subduction; Accretion; Granulites; Tamil Nadu;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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.

引用

页码：747 / 758

页数：11

共 15 条

[1] Mega sheath fold of the Mahadevi hills, Cauvery Suture Zone, southern India: Implication for accretionary tectonics
Chetty, T. R. K.
Yellappa, T.
Mohanty, D. P.
Nagesh, P.
Sivappa, V. V.
Santosh, M.
Tsunogae, T.
[J]. JOURNAL OF THE GEOLOGICAL SOCIETY OF INDIA, 2012, 80 (06) : 747 - 758
[2] Possible detachment zone in Precambrian rocks of Kanjamalai Hills, Cauvery Suture Zone, Southern India: Implications to accretionary tectonics
Mohanty, D. P.
Chetty, T. R. K.
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[3] Crustal architecture and tectonic evolution of the Cauvery Suture Zone, southern India
Chetty, T. R. K.
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[J]. JOURNAL OF ASIAN EARTH SCIENCES, 2016, 130 : 166 - 191
[4] The mafic-ultramafic complex of Aniyapuram, Cauvery Suture Zone, southern India: Petrological and geochemical constraints for Neoarchean suprasubduction zone tectonics
Yellappa, T.
Venkatasivappa, V.
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Chetty, T. R. K.
Santosh, M.
Tsunogae, T.
[J]. JOURNAL OF ASIAN EARTH SCIENCES, 2014, 95 : 81 - 98
[5] Mineral chemistry of isotropic gabbros from the Manamedu Ophiolite Complex, Cauvery Suture Zone, southern India: Evidence for neoproterozoic suprasubduction zone tectonics
Yellappa, T.
Tsunogae, T.
Chetty, T. R. K.
Santosh, M.
[J]. JOURNAL OF ASIAN EARTH SCIENCES, 2016, 130 : 155 - 165
[6] Geochemical constrains on pyroxenites from Aniyapuram Mafic–Ultramafic Complex, Cauvery Suture Zone, southern India: Suprasubduction zone origin
T Yellappa
T Koizumi
T Tsunogae
[J]. Journal of Earth System Science, 2021, 130
[7] Structural anatomy of a dismembered ophiolite suite from Gondwana: The Manamedu complex, Cauvery suture zone, southern India
Chetty, T. R. K.
Yellappa, T.
Nagesh, P.
Mohanty, D. P.
Venkatasivappa, V.
Santosh, M.
Tsunogae, T.
[J]. JOURNAL OF ASIAN EARTH SCIENCES, 2011, 42 (03) : 176 - 190
[8] Geochemical constrains on pyroxenites from Aniyapuram Mafic-Ultramafic Complex, Cauvery Suture Zone, southern India: Suprasubduction zone origin
Yellappa, T.
Koizumi, T.
Tsunogae, T.
[J]. JOURNAL OF EARTH SYSTEM SCIENCE, 2021, 130 (01)
[9] Retrogressed eclogite (20 kbar, 1020 °C) from the Neoproterozoic Palghat-Cauvery suture zone, southern India
Sajeev, K.
Windley, B. F.
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Kon, Y.
[J]. PRECAMBRIAN RESEARCH, 2009, 171 (1-4) : 23 - 36
[10] Geochemical constraints on depositional environment of metacarbonate rocks from the Neoproterozoic Cauvery Suture Zone, Southern Granulite Terrane, India
Yellappa, Thoti
Kumar, B. Naveen
[J]. INTERNATIONAL GEOLOGY REVIEW, 2024,

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