Abstract
Sri Lanka, formerly known as Ceylon, is a small tropical island located in the southern tip of the Indian peninsula, separated by narrow and shallow Palk Strait in the Indian Ocean. The island is a small landmass of the old Gondwana Supercontinent until the Cretaceous and detached and drifted northward with the Indian subcontinent. Then, the island was separated from the Indian subcontinent possibly in late Miocene. Although Sri Lanka is a small land block with 65,610 km2 land area, it is having variety of geological and geomorphological features. Geomorphologically the island is characterized with three erosional levels based on the elevations, known as lowlands, uplands, and highlands. The lowlands are mostly flat and undulating while upland and highlands are characterized with ridge and valley topography with variety of geomorphological features. The highest point of the country is at Pidurutalagala at 2,524 m above mean sea level. Since the uplands and highlands are receiving much rainfall, most of the rivers are originated from this part and then radiated to the Indian Ocean. Geologically, over 90% of the land is underlain by Precambrian high-grade metamorphic rocks, which divided into three main divisions as the Highland Complex, Vijayan Complex, and Wanni Complex, based on the lithology, metamorphic grades and isotope characteristics. The remaining land is mainly covered with sedimentary sequences. Miocene limestone underlies in the northern and northwestern coastal stretch while Jurassic beds are present in few isolated patches in the northwestern part of the island. Few scattered igneous intrusions can also be recognized within the Precambrian complex.
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References
Adams FD (1929) The geology of Ceylon. Candian J Res 11:425–511
Basnayake BMSB (1988) Groundwater potentials in the sedimentary rock of Sri Lanka. In: LJD Fernando Felicitation Volume. Geological Society of Sri Lanka, Peradeniya, pp 71–77
Burton KW, O’Nions RK (1990) The timescale and mechanism of granulite formation at Kurunegala, Sri Lanka. Contrib Min Pet 106(1):66–89
Cook EK (1931) A geography of Ceylon. Macmillan, London
Cooray P (1994) The precambrian of Sri Lanka: a historical review. Precambr Res 66(1):3–18
Cooray PG (1984) The geology of Sri Lanka. 2nd revised edn. National Museums of Sri Lanka
Dias DP, Dissanayake CB, De Silva NR, Chandrajith R, Jayasinghe ULB, Nimalasiri TB (2012) Preliminary investigations on the hydrocarbon potential of a recently discovered black shale deposit in the north-east of Sri Lanka. Ceylon J Sci (Phys Sci) 16:31–36
Hansen E, Janardhan A, Newton R, Prame W, Kumar GR (1987) Arrested charnockite formation in southern India and Sri Lanka. Contrib Min Pet 96(2):225–244
Hatherton T, Pattiarachchi DB, Ranasinghe VVC (1975) Gravity map of Sri Lanka, 1: 1,000,000. Professional Paper 3. Geological Survey Department, Colombo, Sri Lanka
Hewawasam T, von Blanckenburg F, Schaller M, Kubik P (2003) Increase of human over natural erosion rates in tropical highlands constrained by cosmogenic nuclides. Geology 31(7):597–600
Hölzl S, Hofmann A, Todt W, Köhler H (1994) U-Pb geochronology of the Sri Lankan basement. Precambr Res 66(1):123–149
Jayawardena D, Pathirana HDN (1983) some aspects of geology around Andigama-northwest of Sri Lanka. In: Symposium on the geology of Sri Lanka, Peradeniya, Sri Lanka, 1983. Geological Society of Sri Lanka, p 14
Kröner A, Cooray P, Vitanage P (1991) Lithotectonic subdivision of the precambrian basement in Sri Lanka. Cryst Crust Sri Lanka, Part 1:5–21
Kröner A, Williams I (1993) Age of metamorphism in the high-grade rocks of Sri Lanka. J Geol 513–521
Milisenda C, Liew T, Hofmann A, Kröner A (1988) Isotopic mapping of age provinces in precambrian high-grade terrains: Sri Lanka. J Geol 608–615
Milisenda C, Liewa T, Hofmanna A, Köhler H (1994) Nd isotopic mapping of the Sri Lanka basement: update, and additional constraints from Sr isotopes. Precambr Res 66(1):95–110
Milisenda C, Pohl J, Hofmann A (1991) Charnockite formation at Kurunegala, Sri Lanka. In: The crystalline crust of Sri Lanka, part I Summary of research of the German-Sri Lankan Consortium, pp 141–159
Pathirana HDNC (1986) Sedimentary basins of Sri Lanka. In: LJD Fernando Felicitation Volume. Geological Society of Sri Lanka, Peradeniya, Sri Lanka, pp 71–77
Pohl J, Emmermann R (1991) Chemical composition of the Sri Lankan Precambrian basement. In: The crystalline crust of Sri Lanka, Part I Summary of research of the German-Sri Lankan consortium geological survey department Sri Lanka, Prof Pap 5, pp 94–124
Raase P, Schenk V (1994) Petrology of granulite-facies metapelites of the highland complex, Sri Lanka: implications for the metamorphic zonation and the P-T path. Precambr Res 66(1):265–294
Swan B (1983) An introduction to the coastal geomorphology of Sri Lanka. In: National museums of Sri Lanka, pp 182
Takigami Y, Yoshida M, Funaki M (1999) 40Ar-39Ar ages of dolerite dykes from Sri Lanka. Polar Geosci 12:176–182
Tantirigoda DA, Geekiyanage P (1988) An interpretation of gravity anomalies over the Jaffna peninsula in northern Sri Lanka. J Geol Soc Sri Lanka 1:30–34
Vanacker V, von Blanckenburg F, Hewawasam T, Kubik PW (2007) Constraining landscape development of the Sri Lankan escarpment with cosmogenic nuclides in river sediment. Earth Planet Sci Lett 253(3):402–414
Vitanage P (1972) Post-Precambrian uplifts and regional neotectonic movements in Ceylon. In: Proceedings 24th IGC, pp 642–654
Vitanage P (1985) The geology, structure and tectonics of Sri Lanka and South India. In: Cooray PG, Dissanayake CB (eds) Recent advances in the geology of Sri Lanka. vol Occasional Publication. CIFEG (International Center for Training and Exchange in the Geosciences), Paris, pp 5–15
Vitanage PW (1970) A study of the geomorphology and the morphotectonics of Ceylon. In: UNESCO/ESCAFE 2nd international seminar on geochemical prospects, methods and techniques, Bangkok, Thailand 1970. ESCAFE
Von Blanckenburg F, Hewawasam T, Kubik PW (2004) Cosmogenic nuclide evidence for low weathering and denudation in the wet, tropical highlands of Sri Lanka. J Geophys Res: Earth Surf 109(F3):2003–2012
Wadia D (1945) The three superposed peneplains of Ceylon. Cey Dept Minealogy Rec, Prof paper, p 1
Yoshida M, Funaki M, Vitanage P (1989) A Jurassic dolerite dyke from Sri Lanka and its palaeomagnetic analysis. J Geol Soc India 30:71–76
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Chandrajith, R. (2020). Geology and Geomorphology. In: Mapa, R. (eds) The Soils of Sri Lanka. World Soils Book Series. Springer, Cham. https://doi.org/10.1007/978-3-030-44144-9_3
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