*Durgalakshmi Durgalakshmi¹, Ian S Williams², Satish Kumar M³, Sanjeewa Malaviarachchi⁴, Krishnan Sajeev⁵ (1.Department of Studies in Earth Science, University of Mysore, Mysuru, India, 2.Research School of Earth Sciences, Australian National University, Canberra, Australia, 3.Department of Geology, Niigata University, Niigata, Japan, 4.Department of Geology, University of Peradeniya, Peradeniya, Sri Lanka, 5.Centre for Earth Sciences, Indian Institute of Science, Bengaluru, India)

*Geoffrey Hugo Grantham¹, Sanjeewa Malaviarachchi², Dilshan Bandara², Bruce Eglington³, Prasanna Dharmapriya² (1.Department of Geology, University of Johannesburg, Auckland Park, South Africa, 2.Department of Geology, University of Peradeniya, Peradeniya 20400, Sri Lanka., 3.Geological Sciences, University of Saskatchewan, Saskatoon, SK, S7N 4K8, Canada.)

Momoko Shirakawa¹, *Madhusoodhan Satish-Kumar², Sanjeewa Malaviarachchi³, Krishnan Sajeev⁴, Geoffrey Hugo Grantham⁵ (1.Graduate School of Science and Technology, Niigata University, 2.Department of Geology, Faculty of Science, Niigata University, 3.University of Peradeniya, Peradeniya, Sri Lanka, 4.Indian Institute of Science, Bangalore, India, 5.University of Johannesburg, South Africa)

*Geoffrey Hugo Grantham¹, Sanjeewa Malaviarachchi², Dilshan Bandara², Bruce Eglington³, Prasanna Dharmapriya² (1.Department of Geology, University of Johannesburg, Auckland Park, South Africa, 2.Department of Geology, University of Peradeniya, Peradeniya 20400, Sri Lanka., 3.Geological Sciences, University of Saskatchewan, Saskatoon, SK, S7N 4K8, Canada.)

Momoko Shirakawa¹, *Madhusoodhan Satish-Kumar², Sanjeewa Malaviarachchi³, Krishnan Sajeev⁴, Geoffrey Hugo Grantham⁵ (1.Graduate School of Science and Technology, Niigata University, 2.Department of Geology, Faculty of Science, Niigata University, 3.University of Peradeniya, Peradeniya, Sri Lanka, 4.Indian Institute of Science, Bangalore, India, 5.University of Johannesburg, South Africa)