Dr. Thoti Yellappa

@ngri.res.in

Principal Scientist, Geochemistry Division, National Geophysical Research Institute, Hyderabad

https://researchid.co/ylp_csir-ngri

EDUCATION

MSc., Ph.D. in Geology

RESEARCH INTERESTS

Precambrian Geology

649

Scholar Citations

Scholar h-index

Scholar i10-index

RECENT SCHOLAR PUBLICATIONS

Geochemistry and tectonic significance of high-Fe bearing tholeiitic dykes from the southern part of Bastar Craton, central India: An evidence for continental arc magmatism
T Yellappa
Journal of Earth System Science, 1-30 2023

Petrogenesis and Geochemical characteristics of Pyroxenite dykes in and around Salem Mafic-Ultramafic Complex, Southern India: An arc-related origin of Alaskan- type
T Yellappa
Current Science 2022

Thenmudiyanur Mafic–Ultramafic Complex from the northeastern margin of Southern Granulite Terrane, India: A possible Neoproterozoic Alaskan-type Complex
T Yellappa
Journal of Earth System Science 2022

Mineral chemistry of chrome spinels from Thenmudiyanur Mafic- Ultramafic Complex, Belur Shear Zone, Southern India Evidence of Alaskan type Evolution.
T Yellappa
36th International Geological Congress, Hyderabad,, 1562-1563 2022

Geochemical constrains on pyroxenites from Aniyapuram Mafic–Ultramafic Complex, Cauvery Suture Zone, southern India: Suprasubduction zone origin
T Yellappa, T Koizumi, T Tsunogae
Journal of Earth System Science 130, 1-24 2021

High Ti-bearing Gabbros from Chalk Hills of Salem, Southern India: A Co-genetic Origin during Neoproterozoic Alaskan-type Evolution
T Yellappa
Journal of the Geological Society of India 97, 21-34 2021

The mafic–ultramafic complex of Salem, southern India: An analogue for Neoproterozoic Alaskan‐type complex
T Yellappa, M Santosh, S Manju
Geological Journal 54 (5), 3017-3040 2019

Chemistry of Chrome spinels from Salem Mafic-Ultramafic Complex, Southern India: Evidence for Neoproterozoic Alaskan-type of evolution.
T Yellappa
National conference on ‘Tectonics of Evolving Earth’ at University of Hyderabad 2019

GEOCHEMISTRY OF MAFIC GRANULITES FROM ANIYAPURAM MAFIC-ULTRAMAFIC COMPLEX (CAUVERY SUTURE ZONE) SOUTHERN INDIA: IMPLICATIONS FOR SUPRASUBDUCTION ZONE TECTONICS
T Yellappa
International Journal of Emerging Technologies and Innovative Research 5 (7 2018

Geochemical characteristics of Proterozoic granite magmatism from Southern Granulite Terrain, India: Implications for Gondwana
T Yellappa, JM Rao
Journal of Earth System Science 127, 1-31 2018

Crustal architecture and tectonic evolution of the Cauvery Suture Zone, southern India
TRK Chetty, T Yellappa, M Santosh
Journal of Asian Earth Sciences 130, 166-191 2016

Mineral chemistry of isotropic gabbros from the Manamedu Ophiolite Complex, Cauvery Suture Zone, southern India: Evidence for neoproterozoic suprasubduction zone tectonics
T Yellappa, T Tsunogae, TRK Chetty, M Santosh
Journal of Asian Earth Sciences 130, 155-165 2016

Precambrian iron formations from the Cauvery Suture Zone, Southern India: Implications for sub-marine hydrothermal origin in Neoarchean and Neoproterozoic convergent margin
T Yellappa, TRK Chetty, M Santosh
Ore Geology Reviews 72, 1177-1196 2016

The mafic–ultramafic complex of Aniyapuram, Cauvery Suture Zone, southern India: Petrological and geochemical constraints for Neoarchean suprasubduction zone tectonics
T Yellappa, V Venkatasivappa, T Koizumi,TRK Chetty, M Santosh, T Tsunogae
Journal of Asian Earth Sciences 95, 81-98 2014

Petrological and Geochemical characteristics of some mafic granulites in the eastern part of Cauvery Suture Zone, Southern granulite terrain, India: Implications for their
T Yellappa, V Venkatasivappa, TRK Chetty, M Santosh
Granulites and Grnaulites-2013, Hyderabad 2013

Mega sheath fold of the Mahadevi hills, Cauvery Suture Zone, southern India: Implication for accretionary tectonics
TRK Chetty, T Yellappa, DP Mohanty, P Nagesh, VV Sivappa, M Santosh, ...
Journal of the Geological Society of India 80, 747-758 2012

Clinopyroxene compositions of Gabbros from Manamedu ophiolite complex, Cauvery Suture Zone, South India a new evidence for suprasubduction zone tectonics
T Yellappa, TRK Chetty, T Tsunogae
IAGR Annual Convention-2012, 9th International Symposium on Gondwana to Asia 2012

A Neoarchean dismembered ophiolite complex from southern India: Geochemical and geochronological constrains on its suprasubduction origin
T Yellappa, M Santosh, TRK Chetty, S Kwon, C Park, P Nagesh, ...
Gondwana Research 2012

Tectonic framework of southern Bastar Craton, Central India: a study based on different spatial information data sets
T Yellappa, TRK Chetty, M Santosh
Geological Journal 47 (2-3), 161-185 2012

Mapping of Shear Zones in the Western Ghats, Southwestern Part of Dharwar Craton
TRK CHETTY, DP MOHANTY, T YELLAPPA
Journal of Geological Society of India 2012

MOST CITED SCHOLAR PUBLICATIONS

The Neoproterozoic subduction complex in southern India: SIMS zircon U–Pb ages and implications for Gondwana assembly
M Santosh, WJ Xiao, T Tsunogae, TRK Chetty, T Yellappa
Precambrian Research 192, 190-208 2012
Citations: 170

The Manamedu Complex: Geochemical constraints on Neoproterozoic suprasubduction zone ophiolite formation within the Gondwana suture in southern India
T Yellappa, TRK Chetty, T Sunogae, M Santosh
Journal of Geodynamics 50, 268-285 2010
Citations: 89

Mapping of Shear Zones in the Western Ghats, Southwestern Part of Dharwar Craton
TRK CHETTY, DP MOHANTY, T YELLAPPA
Journal of Geological Society of India 2012
Citations: 46

Structural anatomy of a dismembered ophiolite suite from Gondwana: The Manamedu complex, Cauvery suture zone, southern India
TRK Chetty, T Yellappa, P Nagesh, DP Mohanty, V Venkatasivappa, ...
Journal of Asian Earth Sciences 42 (3), 176-190 2011
Citations: 39

Crustal architecture and tectonic evolution of the Cauvery Suture Zone, southern India
TRK Chetty, T Yellappa, M Santosh
Journal of Asian Earth Sciences 130, 166-191 2016
Citations: 28

The mafic–ultramafic complex of Salem, southern India: An analogue for Neoproterozoic Alaskan‐type complex
T Yellappa, M Santosh, S Manju
Geological Journal 54 (5), 3017-3040 2019
Citations: 21

Geochemical characteristics of Proterozoic granite magmatism from Southern Granulite Terrain, India: Implications for Gondwana
T Yellappa, JM Rao
Journal of Earth System Science 127, 1-31 2018
Citations: 16

Occurrence of lamproitic dykes at the northern margin of the Indravati Basin, Bastar Craton, Central India
T Yellappa, NV Chalapathi Rao, TRK Chetty
Journal of the Geological Society of India 75, 632-643 2010
Citations: 16

Tectonic framework of southern Bastar Craton, Central India: a study based on different spatial information data sets
T Yellappa, TRK Chetty, M Santosh
Geological Journal 47 (2-3), 161-185 2012
Citations: 10

Tectonic history and occurrence of 2.4 Ga mafic dyke swarms adjacent to Godavari Basin, Karimnagar, India
JM Rao, GVSP Rao, M Widdowson, T Yellappa, SP Kelley
Current Science 98 (11), 1472 2010
Citations: 5

Mafic dykes around Ramagiri schist belt, East Dharwar Craton, South India: Possible plaleaostress regimes
T Yellappa, TRK Chetty
Indian Dyke Volume, 2008, 261-279 2008
Citations: 2

Publications

19. Yellappa, T., 2022. Geochemistry of Pyroxenites dykes in and around Salem mafic-Ultramafic complex, southern India: An evidence of Arc related origin of Alaskan- type. Current Science (IF: 1.103) (Accepted)
18. Yellappa, T. 2022. Thenmudiyanur Mafic-Ultramafic Complex from the north eastern margin of Southern Granulite Terrane, India: a possible Neoproterozoic Alaskan- type Complex Journal of Earth System Science 131:206, 1-27. (IF: 1.371).
17. Yellappa, T., 2021. High Ti-bearing gabbros from Chak hills of Salem Southern granulite terrane India. Journal of the Geological Society of India 97, 21-34. (IF: 1.459)
16. Yellappa, T. Koizumi, T. Tsunogae, T. 2021. Geochemical constrains on pyroxenites from the Aniyapuram mafic-ultramafic complex, Cauvery Suture Zone, Southern India: a Suprasubduction zone origin. Journal of Earth System Science 130:11, 1-24. (IF: 1.371)
15. Yellappa, T., Santosh, M. and Manju, S. 2019. The mafic-ultramafic complex of Salem, southern India: An analogue for Neoproterozoic Alaskan- type complex. Geological Journal 54(5), 3017-3040. . (IF: 2.489).
14. Yellappa, T. and Mallikarjuna Rao, M., 2018. Geochemical Constrains on Neoproterozoic Granitoids from Cauvery Suture Zone, Southern granulite Terrain: implications for Gondwana. Journal of Earth System Science 127:22, 1-31. (

GRANT DETAILS

5. Geochemical constrains on evolution- 22.39 lakhs 2019-2022
history of calc-silicate rocks from the north
and central parts of Southern granulite terrane,
India DST (sponsored) PI: Dr. T. Yellappa
-----------------------------------------------------------------------------------------------------------------
4. Age and Tectonothermal history of mafic and 11.40 lakhs 2015-2019
ultramafic rocks within the Cauvery Suture Zone
Southern India
DST (sponsored) PI: Dr. T. Yellappa
-----------------------------------------------------------------------------------------------------------------
3. Thermal evolution of Peninsular India: 40.00 lakhs 2010-2013
Past behaviours and future potential
(Indo-Australian Collaboration-AISRF)
PI: Dr. TRK Chetty
DST (sponsored) Member: Dr. T. Yellappa
-----------------------------------------------------------------------------------------------------------------
2. Structure and dynamics of shear 10.80 lakhs 2008-2011
zone systems across the Dharwar
Craton along Kasargoad-Kurnool Transect
PI: Dr. T.R.K. Chetty
DST (sponsored) Co-PI: Dr. T. Yellappa
-----------------------------------------------------------------------------------------------------------------
1. Tectanothermal evolution of 02.00 lakhs 2008-2010
Gondwana suture, Southern India
(Indo-Japan Collaboration)
PI: Dr. T.R.K