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Professor in Geology, Department of Geology, Faculty of Science, University of Peradeniya- 
High-temperature lower crust of East Central Gondwana:
Emphases to southern Indian and Sri Lankan Geology
Member of the American
Geophysical Union - AGU
Medal winner as one of the
‘Best 100 Scientist -2010’ awarded by the International Biographical Centre,
Cambridge, UK
21st century Centre of
Excellence (COE) student scholarship for Ph.D (2005-2008)Mineralium Deposita
JW Park, IH Campbell, SPK Malaviarachchi, H Cocker, H Hao, SM Kay (2019). Chalcophile element fertility and the formation of porphyry Cu±Au deposits. Mineralium Deposita, 54 (5): 657-670.
U-Pb geochronology of zircons from river sediments in Sri Lanka: Implications on early Archean to late Cambrian magmatism and episodic crustal growth
Journal of Asian Earth Sciences 171, 388-412 (2019). Sanjeewa PK Malaviarachchi, Subhashani Bindusara, Prasanna Lakshitha Dharmapriya, Ben-Can Su, Li Su, Ben-Xun Su, Hong Zhang, Chengli Zhang, Krishnan Sajeev, Patrick Asamoah Sakyi, Melesse Alemayehu. U-Pb geochronology of zircons from river sediments in Sri Lanka: Implications on early Archean to late Cambrian magmatism and episodic crustal growth, .
Review on Age of Magmatism and Crust Formation in Sri Lanka: U–Pb and Lu–Hf Isotopic Perspectives
SPK Malaviarachchi (2018). Journal of the Indian Institute of Science 98 (4), 417-427. Review on Age of Magmatism and Crust Formation in Sri Lanka: U–Pb and Lu–Hf Isotopic Perspectives, .
Magnetite-apatite deposit from Sri Lanka: Implications on Kiruna-type mineralization associated with ultramafic intrusion and mantle metasomatism
XF He, M Santosh, T Tsunogae, SPK Malaviarachchi (2018). American Mineralogist: Journal of Earth and Planetary Materials 103 (1), 26-38. Magnetite-apatite deposit from Sri Lanka: Implications on Kiruna-type mineralization associated with ultramafic intrusion and mantle metasomatism, .
Geoscience Frontiers
Dharmapriya, P.L., Sanjeewa PK Malaviarachchi, Kriegsman, L.M, Andrea Galli,Sajeev, K,Chengli Zhang (2017). New constraints on the P-T path of HT/UHT metapelites from the Highland Complex of Sri Lanka. Geoscience Frontiers, .
DOI: https://dx.doi.org/10.1016/j.gsf.2016.12.005
Ore geology Review
Yang Bai, Ben-Xun Su, Chen Chen, Sai-Hong Yang, Zi Liang, Yan Xiao, Ke-Zhang Qin, Sanjeewa PK Malaviarachchi. (2017). Base metal mineral segregation and Fe-Mg exchange inducing extreme compositions of olivine and chromite from the Xiadong Alaskan-type complex in the southern part of the Central Asian Orogenic Belt. Ore geology Review, .
DOI: https://dx.doi.org/10.1016/j.oregeorev.2017.01.023
Geoscience Frontiers
Dharmapriya, P.L., Sanjeewa PK Malaviarachchi, Leo M Kriegsman, Sajeev, K, Andrea Galli, Osanai, Y, Subasinghe, N.D, Dissanayake. C.B. (2016). Distinct metamorphic evolution of alternating silica-saturated and silica-deficient microdomains within garnet in ultrahigh-temperature granulites: an example from Sri Lanka. Geoscience Frontiers, .
DOI: https://dx.doi.org/10.1016/j.gsf.2016.11.008
Ceylon Journal of Science
Dharmagunawardhane, H.A, Malaviarachchi, S.P.K., Burgess, W. (2016). Fluoride content of minerals in gneissic rocks at an area of endemic dental fluorosis in Sri Lanka: estimates from combined petrographic and electron microprobe analysis. Ceylon Journal of Science, 45: 1.
Journal of the Mineralogical and Petrological Sciences
Osanai, Y., Sajeev, K., Nakano, N., Kitano, I., Kehelpannala, W.K.V., Kato, R., Adachi, T., Malaviarachchi, S.P.K. (2016). UHT granulites of the Highland Complex of Sri Lanka II: Geochronological constraints and implications for Gondwana correlation. Journal of the Mineralogical and Petrological Sciences, 111: 157-169.
Journal of the Mineralogical and Petrological Sciences
Osanai, Y., Sajeev, K., Nakano, N., Kitano, I., Kehelpannala, W.K.V., Kato, R., Adachi, T., Malaviarachchi, S.P.K. (2016). UHT granulites of the Highland Complex of Sri Lanka I: Geological and Petrological background. Journal of the Mineralogical and Petrological Sciences, 111: 145-156.
International Geology Review
Dharmapriya, P.L., Malaviarachchi, S.P.K., Santosh, M., Sajeev, K., Zhang, Chengli. (2016). New LA-ICP-MS U-Pb ages of detrital zircons from the Highland Complex. Insights into late Cryogenian to early Cambrian (ca. 665-535) linkage between Sri Lanka and India. International Geology Review, 58 (15): 1856-1883.
Precambrian Research
Takamura, Y., Tsunogae, T., Santosh, M., Malaviarachchi, S.P.K., Tsutsumi. Y. (2016). U-Pb geochronology of detrital zircons in metasediments of Sri lanka: Implications for the regional correlations of Gondwana fragments. Precambrian Research, 281: 434-452.
Precambrian Research
He Xiao-Fang, Santosh, M, Tsunogae, T, Malaviarachchi, S.P.K, Dharmapriya, P.L. (2016). Neoproterozoic arc accretion along the 'eastern suture' in Sri Lanka during Gondwana assembly. Precambrian Research, 279: 57-80.
Journal of the Geological Society of Sri Lanka
MalaviarachchiSanjeewa P.K. (2016). A Concise Review on New Lu-Hf And U-Pb Isotope Systematics of Metamorphosed Magmatic Rocks of Sri Lanka: Insights into Recent Geotectonic Models. Journal of the Geological Society of Sri Lanka, 17: 101-112.
Gondwana Research
He, Xiao-Fang, Santosh, M., Tsunogae, T., Malaviarachchi, S.P.K. (2016). Early to late Neoproterozoicmagmatism and magma mixing-mingling in Sri Lanka: Implications for convergent margin processes during Gondwana assembly. Gondwana Research, 32: 151-180.
Precambrian Research
Dharmapriya, P.L., Malaviarachchi, S.P.K., Santosh, M., Lang, L., Sajeev, K. (2015). Late-Neoproterozoic ultrahigh-temperature metamorphism in the Highland Complex, Sri Lanka. Precambrian Research, 271: 311-333.
Lithos
Dharmapriya, P.L., Malaviarachchi, S.P.K., Galli, A., Su, Ben-Xun.,Subasinghe, N.D., Dissanayake. C.B. (2015). Rare evidence for formation of garnet + corundum during isobaric cooling of ultrahigh temperature metapelites: New insights for retrograde P-T trajectory of the Highland Complex, Sri Lanka. Lithos, 220: 300-317.
Journal of Asian Earth Sciences
Takamura, Y., Tsunogae, T., Santosh, M., Malaviarachchi, S.P.K., Tsutsumi. Y. (2015). Petrology and zircon U-Pb geochronology of metagabbro from the Highland Complex, Sri Lanka: Implications for the correlation of Gondwana suture zones. Journal of Asian Earth Sciences, 113: 826-841.
Journal of the Indian Institute of Science
Malaviarachchi, S.P.K., Dharmapriya, P.L. (2015). Revisiting Ultrahigh Temperature Granulites of Sri Lanka: New Prograde and Retrograde Mineral Textures from the Highland Complex. Journal of the Indian Institute of Science, 95 (2): 159-172.
Journal of the Geological Society of Sri Lanka
Malaviarachchi, S.P.K., Dharmapriya, P.L (2015). Prelimanary data on Platinum Group Element and gold in the Highland Complex, Sri Lanka: A search for hidden sulphide saturation. Journal of the Geological Society of Sri Lanka, 16: 29-31.
Precambrian Research
Santosh, M. Tsunogae, T. Malaviarachchi, S.P.K.,Zhang,Z., Ding, H., Tang, L., Dharmapriya. P.L. (2014). Neoproterozoic crustal evolution in Sri Lanka: Insights from petrologic, geochemical and zircon U-Pb and Lu-Hf isotopic data and implications for Gondwana assembly. Precambrian Research, 255: 1-29.
Journal of Asian Earth Sciences
Dharmapriya, P. L., Malaviarachchi, S. P. K.,Galli, A., Su, B, Subasinghe, N. D., Dissanayake, Nimalsiri, T.B, Zhu, B. (2014). P-T evolution of a spinel + quartz bearing khondalite from the Highland Complex, Sri Lanka: Implications for non-UHT metamorphism. Journal of Asian Earth Sciences, 95: 99-113.
Lithos
Zhong-Mei Wang, Chun-Ming Han,Ben-Xun Su, Patrick AsamoahSakyi, Sanjeewa P.K. Malaviarachchi, Song-JianAo, Luo-Juan Wang. (2013). The metasedimentary rocks from the eastern margin of the TarimCraton: Petrology, geochemistry, zircon U-Pb dating, Hf isotopes and tectonic implications. Lithos, 179: 120-136.
DOI: https://dx.doi.org/10.1016/j.lithos.2013.08.010
International Geology Review
Ben-Xun Su, Ke-Zhang Qin, Patrick AsamoahSakyi, Sanjeewa P.K. Malaviarachchi, Ping-Ping Liu, Dong-Mei Tang, Qing-Hua Xiao, He Sun, Yu-Guang Ma & Qian Mao. (2012). Occurrence of an Alaskan-type complex in the Middle Tianshan. International Geology Review, 54:3: 249-269.
DOI: https://dx.doi.org/10.1080/00206814.2010.543009
International Geology Review
Benxun Su, Kezhang Qin, Patrick AsamoahSakyi, Dongmei Tang, Pingping Liu, Sanjeewa P.K. Malaviarachchi, Qinghua Xiao & He Sun. (2012). Geochronologic-petrochemical studies of the Hongshishan mafic-ultramafic intrusion, Beishan area, Xinjiang (NW China): petrogenesis and tectonic implications. International Geology Review, 54:3: 270-289.
DOI: https://dx.doi.org/10.1080/00206814.2010.543011
Ceylon Journal of Science (Physical Sciences)
Malaviarachchi, S.P.K. (2012). Extremely high Rare Earth Element partitioning in to Clinopyroxenes of mantle peridotites. Ceylon Journal of Science (Physical Sciences), 16: 1.
Journal of the geological Society of Sri Lanka
Malaviarachchi, S.P.K.,&Takasu, A. (2011). Electron Microprobe dating of Monazites from Sri Lanka. Journal of the geological Society of Sri Lanka, 14: 81-90.
Journal of the geological Society of Sri Lanka
Malaviarachchi, S.P.K.,& Takasu, A. (2011). Petrology of metamorphic rocks from the Highland and Kadugannawa Complexes, Sri Lanka. Journal of the geological Society of Sri Lanka, 14: 103-122.
Journal of Asian Earth Sciences
Ben-Xun Su, Ke-Zhang Qin, Patrick AsamoahSakyi, Ping-Ping Liu, Dong-Mei Tang, Sanjeewa P.K. Malaviarachchi, Qing-Hua Xiao, He Sun, Yu-Cai Dai&Yan Hu. (2011). Geochemistry and geochronology of acidic rocks in the Beishan region, NW China: Petrogenesis and tectonic implications. Journal of Asian Earth Sciences, 41: 31-43.
Gondwana Research
Ben-Xun Su, Ke-Zhang Qin, Patrick AsamoahSakyi, Xian-Hua Li, Yue-Heng Yang, He Sun, Dong-Mei Tang, Ping-Ping Liu, Qing-Hua Xiao & Sanjeewa P.K. Malaviarachchi. (2011). U-Pb ages and Hf-O isotopes of zircons from Late Paleozoic mafic-ultramafic units in the southern Central Asian Orogenic Belt: Tectonic implications and evidence for an Early-Permian mantle plume. Gondwana Research, 20: 516-531.
Journal of Earth Science
Su Benxun, Zhang Hongfu, Patrick AsamoahSakyi, Qin Kezhang, Liu Pingping, Ying Jifeng, Tang Yanjie, Sanjeewa P K Malaviarachchi, Xiao Yan, Zhao Xinmiao, Mao Qian, Ma Yuguang. (2010). Formation of Melt Pocket in Mantle Peridotite Xenolith from Western Qinling, Central China: Partial Melting and Metasomatism. Journal of Earth Science, 21:5: 641-668.
DOI: https://dx.doi.org/10.1007/s12583-010-0116-y
Journal of Petrology
Malaviarachchi, S.P.K, Makishima, A and Nakamura, E. (2010). Melt-rock reactions and metasomatism in the upper mantle revealed from peridotites and gabbros from the HoromanPeridotite Massif, Japan. Journal of Petrology, 51: 1417-1445.
Nature Geoscience
Malaviarachchi, S.P.K, Makishima, A, Tanimoto, M, Kuritani, T and Nakamura, E. (2008). Highly unradiogenic lead isotope ratios from the Horomanperidotite massif in Japan. Nature Geoscience, 01: 859-863.
Journal of Geological Society of Sri Lanka
Malaviarachchi, S.P.K and Dharmagunawardhane, H.A. (2007). Borehole data representation by Cyclogram: a case study from Polonnaruwa area, Sri Lanka. Journal of Geological Society of Sri Lanka, v. 12: p. 21-26.