*Sachintha Lakshan Senarathne¹, J.M.C.K Jayawardana¹, Rohana Chandrajith², E.A.N.V Edirisinghe³ (1.Sabaragamuwa University of Sri Lanka, 2.University of Peradeniya, Sri Lanka, 3.Sri Lanka Atomic Energy Board)

*Rohana Chandrajith¹, Kaushalya Jayathunga¹ (1.Department of Geology, University of Peradeniya, Sri Lanka)

*Prashani Amoditha Kumari Ulapane¹, Chamindra L Vithana^1,2, Rohana Chandrajith¹, Leigh A Sullivan³, Jochen Bundschuh⁴, Atula Senaratne¹, Nick J Ward², Nadia Toppler⁵ (1.Department of Geology, University of Peradeniya, Sri Lanka, 2.Southern Cross Geoscience, Southern Cross University, Australia, 3.University of Canberra, Australia, 4.University of Southern Queensland, Australia, 5.Environmental Analysis Laboratory, Southern Cross University, Australia)

*W.L.A.C.I. Weedagama ^1,2, N.W.B. Balasooriya², Atula Senaratne², Bhathiya Athurupana², Rohana Chandrajith², Nadeesha H. Koralegedara² (1.Post Graduate Institute of Science, University of Peradeniya, Peradeniya, Sri lanka, 2.Department of Geology, University of Perdeniya, Peradeniya, Sri Lanka)

*Kasun Gayantha¹, Patrick Roberts², Joyanto Routh³, Achim Brauer⁴, Rohana Chandrajith⁵, Oshan Wedage², Florian Ott², Gerd Gleixner¹ (1.Max Planck Institute for Biogeochemistry, Jena, Germany, 2.Max Planck Institute for the Science of Human History, Jena, Germany, 3.TEMA-M, Linköping University, Linköping, Sweden, 4.GFZ, Potsdam, Germany, 5.Department of Geology, University of Peradeniya, Sri Lanka)