Prof. Rathnayake N.P.

W.A.P. Weerakoon, Neerja Jha, H.A.H. Jayasena, Harinam Joshi, Deepthi Yakandawala, Rohana Chandrajith, Nalin Rathnayake and Neha Aggarwal,".PALYNOFACIES BASED DEPOSITIONAL ENVIRONMENTS IN TABBOWA JURASSIC BEDS, SRI LANKA .",33rd Technical Session of Geological Society of Sri Lanka,Sri Lanka,2017,

Pathirage SS, Hemala PVA, Rohitha LPS, Siriwardana YPS, Ratnayake NP,".Identifying the Key Contaminants of Major Types of Vein Quartz in Badulla Area and Reduce Iron Content to Suit Manufacturing Chemically Reinforced Glass.",33rd Technical Session of Geological Society of Sri Lanka,Colombo,2017,

J.M.S.T.W. Jayasinghe, A.C. Kurukulasuriya, W.M.T.U. Jayasinghe, M.A.D.M.G. Wickrama, A.M.A.Damith M. Senadhira ,".Pore-Pressure and Fracture Pressure Gradient Prediction Model for Few Exploration Blocks in Mannar and Cauvery Basins, Sri Lanka. .",Annual Sessions of the Institution of Engineers, Sri Lanka ,Colombo,2016,235-242

15. RML Udarika, EPN Udayakumara, K Amalan, NP Ratnayake and HMR Premasiri ,".Comparison of Heavy Mineral Composition along Mahaweli River with Placer Deposits at North East Coast of Sri Lanka.",International Symposium on Agriculture and Environment,University of Ruhuna,2016,141-143

Upul Premarathne, Noriyuki Suzuki ,".A simple method to remove drilling oil in sediment cuttingsfor elemental analysis: A case study from the Mannar basin,offshore Sri lanka..",32nd Technical Sessions of Geological Society of Sri Lanka,,2016,18

W.A.P. Weerakoon, H.A.H. Jayasena, Neerja Jha, N.P. Ratnayake,R.L.R. Chandrajith, Deepthi Yakandawala, Anjum Frooqui and Neha Aggarwal,".Depositional characteristics of sediments from mires in and around Horton Plains national park, Sri lanka.",32nd Technical Sessions of Geological Society of Sri Lanka,,2016,21

,".Capacity building of earth sciences towards decrease of geo hazards in Sri Lanka.",Workshop at 3rd United Nation World Conference on Disaster Risk Reduction at Sendai, Japan,Tokyo, Japan,2016,7-Jun

48. Pathirage S.S., Hemalal P.V.A., Rohitha L.P.S., Siriwardana S.,,".Producing Raw Silica from Sri Lankan Vein Quartz Suitable for High End Glass Industry.",32nd Technical Sessions of Geological Society of Sri Lanka,Sri Lanka,2015,31

N.P. Dushyantha, P.V.A. Hemalal, C.L. Jayawardena, Nalin Prasanna Ratnayake,".Application of geochemical techniques for prospecting unconventional phosphate sources: A case study of the lake sediments in Eppawala area Sri Lanka. .",Journal of Geochemical Exploration,DOI: 10.1016/j.gexplo.2019.02.010,2019

S.S. Pathirage, P V A Hemalal, L.P.S Rohitha, Nalin Prasanna Ratnayake,".Production of industry-specific quartz raw material using Sri Lankan vein quartz.",Environmental Earth Sciences,Online,2019

Yusuke Yokoyama, Shoko Hirabayashie, Kazuhisa Goto, Jun'ichi Okuno, Adam D.Sprosona, Tsuyoshi Haraguchih, Nalin Ratnayake, Yosuke Miyairia,".Holocene Indian Ocean sea level, Antarctic melting history and past Tsunami deposits inferred using sea level reconstructions from the Sri Lankan, Southeastern Indian and Maldivian coasts.",Quaternary Science Reviews,Online,2019

Nalin Prasanna Ratnayake, Amila Sandaruwan Ratnayakee, Rukshan M. Azoor, Shanaka Maduranga Weththasinghe, Indunil De J. Seneviratne, Nilupul Senarathne Ranjith Premasiri1 ยท Nimila Dushyantha ,".Erosion processes driven by monsoon events after a beach nourishment and breakwater construction at Uswetakeiyawa beach, Sri Lanka.",SN Applied Sciences ,Online,2019

Amalan, K., Ratnayake, A. S., Ratnayake, N. P., Weththasinghe, S. M., Dushyantha, N., Lakmali, N., & Premasiri, R.,".Influence of nearshore sediment dynamics on the distribution of heavy mineral placer deposits in Sri Lank.",Environmental Earth Sciences,77(21),2019

W.A. Panchala Weerakoon, Neha Aggarwal, Neerja Jha, H.A.H.Jayasena, Harinam Joshi, Deepthi Yakandawala, Rohana Chandrajith, K.V. Gayantha Sashika Perera, Nalin Prasanna Ratnayake,".Reconstruction of the Upper Gondwana palaeoclimates based on palynostratigraphy, palynofacies and sedimentology of the Jurassic sequences in the Tabbowa Basin, Sri Lanka.",Journal of Asian Earth Sciences ,Online,2019

Ratnayake, Amila Sandaruwan, Nalin Prasanna Ratnayake, Yoshikazu Sampei, A. V. P. Vijitha, and Sanjeewani Disna Jayamali,".Seasonal and tidal influence for water quality changes in coastal Bolgoda Lake system, Sri Lanka. Journal of Coastal Conservation.",Journal of Coastal Conservation ,2018:1-9,2018

Amila Sandaruwan Ratnayake, Yoshikazu Sampei, Nalin Prasanna Ratnayake, Barry P. Roser ,".Middle to late Holocene environmental changes in the depositional system of the tropical brackish Bolgoda Lake, coastal southwest Sri Lanka. .",Palaeogeography, Palaeoclimatology, Palaeoecology,465,2017

Ratnayake, A. S., Sampei, Y., Ratnayake, N. P., & Roser, B. P. ,".An analysis of beach profile changes subsequent to the Colombo Harbor Expansion Project, Sri Lanka. Middle to late Holocene environmental changes in the depositional system of the tropical brackish Bolgoda Lake, coastal southwest Sri Lanka. .",Palaeogeography, Palaeoclimatology, Palaeoecology,465,2017

A.S. Ratnayake, N. Dushyantha, N. De Silva, H.P. Somasiri, N.N. Jayasekara, S.M. Weththasinghe, G.V.I. Samaradivakara, A.V.P. Vijitha, N.P. Ratnayake ,".Sediment and physicochemical characteristics in Madu-ganga estuary, southwest Sri lanka.",Journal of Geological Society of Sri Lanka,18-2,2017

N. Dushyantha, P.V.A. Hemalal, C.L. Jayawardena, A.S. Ratnayake, H.M.R. Premasiri, N.P. Ratnayake ,".Nutrient characteristics of lake sediments around Eppawala phosphate deposit, Sri lanka.",Journal of Geological Society of Sri Lanka,18-2,2017

U Premarathne, N Suzuki, N Ratnayake, C Kularathne,".Burial and thermal history modelling of the Mannar Basin, offshore Sri Lanka. .",Journal of Petroleum Geology,39,2016

Upul Premarathne, Noriyuki Suzuki and N.P. Ratnayake. ,".Modelling of Hydrocarbon Generation, Migration and Accumulation in the Northern Part of Mannar Basin, Offshore Sri Lanka.",Journal of Geological Society of Sri Lanka,17,2015

Amalan, K, and Weerawarnakula, ,".Prospection sand resources at the continental shelf in offshore Galle, Sri Lanka..",Journal of Geological Society of Sri Lanka,16,2014

Puswewala UGA, Chaminda SP, Ekanayake EMTM and Jayawardene MN,".Evaluation of the potential of sea sand as an alternative to river sand for concrete production in Sri Lanka.",Journal of Geological Society of Sri Lanka,16,2014

KBA Silva, IGIK Kumar,".Chloride contamination in construction aggregates due to periodic saline water intrusion: a case study in the Kaluganga River Estuary, Sri Lanka. Environmental Earth Sciences.",Journal of Environmental Earth Sciences,69,2013

Amo, M., Suzuki, N., Shinoda, T., Ratnayake, N. P. and Takahashi, K. ,".Diagenesis and distribution of sterenes in Late Miocene to Pliocene marine siliceous rocks from Horonobe (Hokkaido, Japan).",Organic geochemistry,38(7),2007

Ratnayake, N. P., Suzuki, N., Okada, M., & Takagi, M. ,".The variations of stable carbon isotope ratio of land plant-derived n-alkanes in deep-sea sediments from the Bering Sea and the North Pacific Ocean during the last 250,000 years.",Chemical geology,228(4),2006

Ratnayake, N. P., Suzuki, N., & Matsubara, M. ,".Sources of long chain fatty acids in deep sea sediments from the Bering Sea and the North Pacific Ocean.",Organic geochemistry,36(4),2005

Ratnayake, N. P., Sampei, Y., Tokuoka, T., Suzuki, N., & Ishida, H. ,".Anthropogenic impacts recorded in the sediments of Lunawa, a small tropical estuary, Sri Lanka.",Environmental Geology,48(2),2005

Ratnayake, N. P. and Suzuki, N. ,".Global changes of vegetation recorded in deep-sea sediments from Subarctic Pacific Ocean during the last 250,000 years.",Ocean Monthly,,2003

Kehelpannala, K. V., and Ratnayake, N. P. ,".Evidence for post-metamorphic metasomatism of high-grade orthogneisses from Sri Lanka.",Gondwana Research,2(2),1999