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Analysis of beachrock samples along Southern and Western coasts of Sri Lanka by spectroscopic methods

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dc.contributor.author Edirisooriya, KVUI
dc.contributor.author Thilakarathna, MADP
dc.contributor.author Vijitha, T
dc.contributor.author Dassanayake, ABN
dc.contributor.author Jayawardena, CL
dc.contributor.editor Dissanayake, DMDOK
dc.contributor.editor Samaradivakara, GVI
dc.date.accessioned 2022-03-23T09:50:04Z
dc.date.available 2022-03-23T09:50:04Z
dc.date.issued 2019-08
dc.identifier.citation Edirisooriya, K.V.U.I., Thilakarathna, M.A.D.P., Vijitha, T., Dassanayake, A.B.N., & Jayawardena, C.L. (2019). Analysis of beachrock samples along Southern and Western coasts of Sri Lanka by spectroscopic methods. In D.M.D.O.K. Dissanayake & G.V.I. Samaradivakara (Eds.), Proceedings of International Symposium on Earth Resources Management & Environment 2019 (pp. 41-49). Department of Earth Resources Engineering, University of Moratuwa. en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/17446
dc.description.abstract Beachrocks are sedimentary structures commonly observed where there is warm sea water in tropical and subtropical regions as a result of cementation by CaCCb of coastal sediments in the tidal zone. Comprehensive studies have been carried out to determine the formation mechanisms of beachrocks specially Japan to improve an alternative countermeasure against erosion by man-made rocks. When focusing on formation mechanism of beachrocks elemental and mineralogical composition is vital. Considering this important application, we used spectroscopic techniques to understand composition of beachrocks in southern coastal region between Ahangama to Kaikawala and Uswetakeiyawa in the western coastal region of Sri Lanka. The presence of minerals in beach rock samples in southern coast were identified by FT-IR spectroscopic technique. The constituents of minerals present in the beach rocks are further confirmed by XRD technique. Elemental concentrations of beach rock samples have been analyzed using technique of WDXRF spectrometry. Uswetakeiyawa beachrock was mainly analyzed by using EDX in SEM. Beachrocks in southern coasts is comprise higher percentage of Aragonite which is the polymorph of CaCCb, frequently founded in most of the sites in the world. Further the composition shown similarities with Indian (Tiruchendru) and Japan (Okinawa) beachrock occurrences. Comparative to the composition of southern coast beachrock, XRD analysis did not indicate any CaC03 polymorphs Uswetakeyyawa, beachrocks. Instead it indicated the presence of Kutnohorite (Ca(Mn,Mg,Fe)(C03)2). en_US
dc.description.sponsorship Faculty of Graduate Studies, University of Moratuwa. en_US
dc.language.iso en en_US
dc.publisher Department of Earth Resources Engineering en_US
dc.subject Beachrock en_US
dc.subject Formation mechanism en_US
dc.subject Mineralogical analysis en_US
dc.subject WDXRF en_US
dc.title Analysis of beachrock samples along Southern and Western coasts of Sri Lanka by spectroscopic methods en_US
dc.type Conference-Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2019 en_US
dc.identifier.conference International Symposium on Earth Resources Management & Environment 2019 en_US
dc.identifier.place Colombo en_US
dc.identifier.pgnos pp. 41-49 en_US
dc.identifier.proceeding Proceedings of International Symposium on Earth Resources Management & Environment 2019 en_US
dc.identifier.email abndassanayake@gmaii.com en_US


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