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Dr. DNS Wanniarachchi

Senior Lecturer

Applied Sciences

Email : nuwan@appsc.sab.ac.lk

    Qualifications

  • D. Sc. (Earth Sciences and Geoenvironmental Sciences) Interdisciplinary Graduate School of Science and Engineering, Shimane Univerisity, Matsue, Japan, 2016

    M. Sc. (Earth Sciences and Geoenvironmental Sciences) Interdisciplinary Graduate School of Science and Engineering, Shimane Univerisity, Matsue, Japan, 2013

    B. Sc. (Hons) in Geology, Department of Geology, University of Peradeniya, Sri Lanka, 2009

     

    AJP (Applied Jewelry Professional Diploma) Gemological Institute of America (GIA) 2020 directoryResults (gia.edu)

    IGS Certified Professional Gemologists, International Gem Society, IGS Certified Professional Gemologists Directory - International Gem Society

     

    Membership of Professional Bodies/Associations

  • Alumni Member of Gemological Institute of America (GIA) since 2020 (DWANN001)

    Regular Member in Europian Association of Geochemistry (2018-2019)

    Member in Geological Society of Sri Lanka (Jan-2018 - present)

    Research Interests

  • Geochronology (zircon and monazite)

    Tectonics and geological history of Sri Lanka

    Gemmology

    Groundwater exploration, Hydrogeology, and water safety

    Natural Hazards

    Current Research Projects

  • Value addition and commercialization of low gem-quality corundum in Sri Lanka using innovative heat treatment technology based on physicochemical analysis (AHEAD RIC R2 No.07)

    Groundwater exploration in the premises of Sabaragamuwa University of Sri Lanka

     

    Undergraduate Supervision

  • (1) S.L. Sandanayake, Geochemical and geophysical investigations of shallow groundwater in a selected area of Samanalawewa Catchment, 2019

    (2) R.D.M.G. Jayalath, Geological mapping and groundwater investigation of the premises of Sabaragamuwa University of Sri Lanka, 2019

    Research Publication in Indexed Journals

    • D.N.S. Wanniarachchi and M. Akasaka (2016) Internal texture and U-Th-total Pb isochron ages of monazite in metamorphic rocks from the Southwestern Highland Complex, Sri Lanka. Journal of Mineralogical and Petrological Sciences, 111, 351362. DOI; http://doi.org/10.2465/jmps.160121

     

    • D.N.S. Wanniarachchi, M. Akasaka, Y. Hayasaka and L.R.K. Perera (2016) Internal textures and U-Pb geochronology of zircons in metamorphic rocks from the Southwestern Highland Complex, Sri Lanka. Journal of Mineralogical and Petrological Sciences. 111, 373-384. DOI; http://doi.org/10.2465/jmps.160316

    Published in abstract/Extended abstract at the National/International Conferences/Symposium

  • Groundwater Potential and Aquifer Types in the Premises of the Sabaragamuwa University of Sri Lanka, 14th-15th November 2019, 7th International Conference of Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka, Jayalath, R.D.M.G., Wanniarachchi, D.N.S., and Ranaweera, L.V.

    Shallow Groundwater Geochemistry in a Selected Area of Samanalawewa Catchment, 14th-15th November 2019, 7th International Conference of Sabaragamuwa University of Sri Lanka, Belihuloya, Sri Lanka, Sandanayake, S.L., Wanniarachchi, D.N.S., Jayawardana, J.M.C.K., and Ranaweera, L.V.

    Zircon Internal Textures and Monazite Dating of Metamorphic Rocks of SWG, Sri Lanka. August 2015, Conference: Goldschmidt 2015 (Prague, Czech Republic) Dadayakkarage Nuwan Sanjaya Wanniarachchi and Masahide Akasaka

    Proterozoic and Paleozoic internal textural events in zircon and monazite on metamorphic rocks of Southwestern Group, Sri Lanka, September 2014, Conference: The 2014 Annual Meeting of Japan Association Mineralogical Sciences (JAMS) (Kumamoto), At Kumamoto, Japan,  Dadayakkarage Nuwan Sanjaya Wanniarachchi and Masahide Akasaka

    Zircon from high grade metamorphic rocks of Southwest Group, Sri Lanka, as an indicator of multiple metamorphic events, September 2013, Conference: Japan Mineralogical and Petrological Society, Dadayakkarage Nuwan Sanjaya Wanniarachchi and Masahide Akasaka

    Internal textures and chemical composition of zircon from high grade metamorphic rocks of Southwest Group, Sri Lanka, May 2013, Conference: Japan Geoscience Union (JPGU), At Makuhari Messe, Chiba, Japan, Dadayakkarage Nuwan Sanjaya Wanniarachchi and Masahide Akasaka

    Landslide Hazard Mapping Project Galle District Phase IV (National Building Research Organization) 2010, Technical Report: August 2010, Affiliation: National Building Research Organization, Dadayakkarage Nuwan Sanjaya Wanniarachchi, Nirmala Dharmarathne, W.A.K.C. Wickramarachchi, W.A.P.N. Wickramarachchi, K.M.D.L.T. Pieris, J.W.M.M.P.K. Jayasinghe, Amila Sandaruwan Ratnayake, G.R.P. Perera, and E.R. Bandula

    Preliminary investigations of marble caves at Ekiriya, Poramadulla, Sri Lanka, February 2009, Conference: 25th Annual Technical Sessions of the Geological Society of Sri Lanka, Amila Sandaruwan Ratnayake, T.D. Dissanayake, Dadayakkarage Nuwan Sanjaya Wanniarachchi, G.S. Dassanayake, C.W. Kularatne,Thusitha Bandara Nimalsiri, Jagath Gunatilake

    Undergraduate Teaching

  • Earth Processes, Geomorphology and Geology of Sri Lanka, Industrial Minerals, Gemmology, Groundwater Exploration, Geophysics