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More than 90% of Sri Lanka's surface lies on Precambrian strata, some of it dating back 2 billion years. [6] The granulite facies rocks of the Highland Series (gneisses, sillimanite-graphite gneisses, quartzite, marbles, and some charnockites) make up most of the island and the amphibolite facies gneisses, granites, and granitic gneisses of the Vijayan Series occur in the eastern and ...
Measurements of area used in ancient Sri Lanka was a system derived from paddy agriculture. [6] Area was often measured in terms of the land that could be sown with a specific amount of seed or rice, including the Pǣla, Amuna, Kiriya (4 amunas), and the Riyana. In one region, a Kiriya was about 8 acres. [5]
Kalmunai is situated on the eastern coast of Sri Lanka, bordered by the Indian Ocean to the east. Kalmunai MC covers an area of 2,740.08 ha (6,770.9 acres) (Data Source _ Survey Department). [ 5 ] To the north of Kalmunai lies the village of Periyaneelavanai, which serves as the border between Ampara and Batticaloa Districts.
Sri Lanka claims an exclusive economic zone extending 200 nautical miles, which is approximately 6.7 times Sri Lanka's land area. The coastline and adjacent waters support highly productive marine ecosystems such as fringing coral reefs and shallow beds of coastal and estuarine seagrasses. [178]
The following is a list of settlements in Sri Lanka. See also: List of towns in Sri Lanka , a list of settlements in Sri Lanka with a population between 5,000 and 50,000. Central Province
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It has montmorillonite clay and is the only place in Sri Lanka where this kind of clay can be obtained. This clay is used in making cement. Aruvi Aru is the second longest river in Sri Lanka and runs through Mannar and Anuradhapura districts. Mannar has artesian springs and aquifers. These water supply comes from Sri Lanka's central areas.
Lunugamvehera is in the Dry zone of Sri Lanka, therefore the park is exposed to annual drought, [2] relieved by the south western monsoon. The elevation of the park is 91 metres (299 ft). Out of 23,498 hectares of total land area 14 percent, that is 3283 ha, is land under the reservoir. Another 50 ha are two smaller reservoirs.